1
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Ishizaki-Betchaku Y, Kumakura N, Yamamoto S, Nagano S, Mitsuishi M. Ultrathin Ionic Diodes with Electrostatically Heterogeneous Hybrid Interfaces of Nanoporous SiO 2 Nanofilms and Polymer Layer-by-Layer Multilayers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404306. [PMID: 38958070 DOI: 10.1002/smll.202404306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Indexed: 07/04/2024]
Abstract
Nanofluidic ionic diodes have attracted much attention due to their unique functions as unidirectional ion transportation ability and promising applications from molecular sensing, and energy harvesting to emerging neuromorphic devices. However, it remains a challenge to fabricate diode-like nanofluidic systems with ultrathin film thickness <100 nm. Herein the formation of ultrathin ionic diodes from hybrid nanoassemblies of nanoporous (NP) SiO2 nanofilms and polyelectrolyte layer-by-layer (LbL) multilayers is described. Ultrathin ionic diodes are prepared by integrating polyelectrolyte multilayers onto photo-oxidized NP SiO2 nanofilms obtained from silsesquioxane-containing block copolymer thin films as a template. The obtained ultrathin ionic diodes exhibit ion current rectification (ICR) properties with high ICR factor = ≈20 under low ionic strength and asymmetric pH conditions. It is concluded that this ICR behavior arises from effective ion accumulation and depletion at the interface of NP SiO2 nanofilms and LbL multilayers attributed to high ion selectivity by combining the experimental data and theoretical calculations using finite element methods. These results demonstrate that the hybrid nano assemblies of NP SiO2 nanofilms and polyelectrolyte LbL multilayers have potential applications for (bio)sensing materials and integrated ionic circuits for seamless connection of human-machine interfaces.
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Affiliation(s)
- Yuya Ishizaki-Betchaku
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo, 171-8501, Japan
| | - Narumi Kumakura
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Shunsuke Yamamoto
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Shusaku Nagano
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo, 171-8501, Japan
| | - Masaya Mitsuishi
- Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
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2
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Cheng D, Theivendran S, Tang J, Cai L, Zhang J, Song H, Yu C. Surface chemistry of spiky silica nanoparticles tailors polyethyleneimine binding and intracellular DNA delivery. J Colloid Interface Sci 2022; 628:297-305. [PMID: 35998455 DOI: 10.1016/j.jcis.2022.08.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/27/2022] [Accepted: 08/06/2022] [Indexed: 11/17/2022]
Abstract
Cellular delivery of DNA using silica nanoparticles has attracted great attention. Typically, polyethyleneimine (PEI) is used to form a silica/PEI composite vector. Understanding the interactions at the silica and PEI interface is important for successful DNA delivery and transfection, especially for silica with different surface functionality. Herein, we report that a higher content of hydrogen boning formed between PEI molecules and phosphonate modified silica nanoparticles could slow down the PEI dissolution from the freeze-dried solid composites into aqueous solution than the bare silica counterpart. The pronounced PEI retention ability through phosphonation of silica nanoparticles effectively improves the transfection efficiency due to the high DNA binding affinity extracellularly, effective lysosome escape and high nuclear entry of both PEI and DNA intracellularly. Our study provides a fundamental understanding on designing effective silica-PEI-based nano-vectors for DNA delivery applications.
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Affiliation(s)
- Dan Cheng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Shevanuja Theivendran
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jie Tang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Larry Cai
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jun Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Hao Song
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Chengzhong Yu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
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3
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Effect of Saccharides Coating on Antibacterial Potential and Drug Loading and Releasing Capability of Plasma Treated Polylactic Acid Films. Int J Mol Sci 2022; 23:ijms23158821. [PMID: 35955952 PMCID: PMC9369226 DOI: 10.3390/ijms23158821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/02/2022] [Accepted: 08/06/2022] [Indexed: 02/07/2023] Open
Abstract
More than half of the hospital-associated infections worldwide are related to the adhesion of bacteria cells to biomedical devices and implants. To prevent these infections, it is crucial to modify biomaterial surfaces to develop the antibacterial property. In this study, chitosan (CS) and chondroitin sulfate (ChS) were chosen as antibacterial coating materials on polylactic acid (PLA) surfaces. Plasma-treated PLA surfaces were coated with CS either direct coating method or the carbodiimide coupling method. As a next step for the combined saccharide coating, CS grafted samples were immersed in ChS solution, which resulted in the polyelectrolyte complex (PEC) formation. Also in this experiment, to test the drug loading and releasing efficiency of the thin film coatings, CS grafted samples were immersed into lomefloxacin-containing ChS solution. The successful modifications were confirmed by elemental composition analysis (XPS), surface topography images (SEM), and hydrophilicity change (contact angle measurements). The carbodiimide coupling resulted in higher CS grafting on the PLA surface. The coatings with the PEC formation between CS-ChS showed improved activity against the bacteria strains than the separate coatings. Moreover, these interactions increased the lomefloxacin amount adhered to the film coatings and extended the drug release profile. Finally, the zone of inhibition test confirmed that the CS-ChS coating showed a contact killing mechanism while drug-loaded films have a dual killing mechanism, which includes contact, and release killing.
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4
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Gomes AS, Correia A, Rahikkala A, Mäkilä E, Pinto MM, Sousa E, Salonen J, Saraiva L, Santos HA. Folic acid-mesoporous silicon nanoparticles enhance the anticancer activity of the p73-activating small molecule LEM2. Int J Pharm 2022; 624:121959. [DOI: 10.1016/j.ijpharm.2022.121959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 06/18/2022] [Accepted: 06/21/2022] [Indexed: 10/17/2022]
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5
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Campos CH, Shanmugaraj K, Bustamante TM, Leal-Villarroel E, Vinoth V, Aepuru R, Mangalaraja RV, Torres CC. Catalytic production of anilines by nitro-compounds hydrogenation over highly recyclable platinum nanoparticles supported on halloysite nanotubes. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.06.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Guo K, Alba M, Chin GP, Tong Z, Guan B, Sailor MJ, Voelcker NH, Prieto-Simón B. Designing Electrochemical Biosensing Platforms Using Layered Carbon-Stabilized Porous Silicon Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2022; 14:15565-15575. [PMID: 35286082 PMCID: PMC9682479 DOI: 10.1021/acsami.2c02113] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Porous silicon (pSi) is an established porous material that offers ample opportunities for biosensor design thanks to its tunable structure, versatile surface chemistry, and large surface area. Nonetheless, its potential for electrochemical sensing is relatively unexplored. This study investigates layered carbon-stabilized pSi nanostructures with site-specific functionalities as an electrochemical biosensor. A double-layer nanostructure combining a top hydrophilic layer of thermally carbonized pSi (TCpSi) and a bottom hydrophobic layer of thermally hydrocarbonized pSi (THCpSi) is prepared. The modified layers are formed in a stepwise process, involving first an electrochemical anodization step to generate a porous layer with precisely defined pore morphological features, followed by deposition of a thin thermally carbonized coating on the pore walls via temperature-controlled acetylene decomposition. The second layer is then generated beneath the first by following the same two-step process, but the acetylene decomposition conditions are adjusted to deposit a thermally hydrocarbonized coating. The double-layer platform features excellent electrochemical properties such as fast electron-transfer kinetics, which underpin the performance of a TCpSi-THCpSi voltammetric DNA sensor. The biosensor targets a 28-nucleotide single-stranded DNA sequence with a detection limit of 0.4 pM, two orders of magnitude lower than the values reported to date by any other pSi-based electrochemical DNA sensor.
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Affiliation(s)
- Keying Guo
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
- Melbourne
Centre for Nanofabrication, Victorian Node
of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
| | - Maria Alba
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
- Melbourne
Centre for Nanofabrication, Victorian Node
of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
- Commonwealth
Scientific and Industrial Research Organisation (CSIRO), Clayton, Victoria 3168, Australia
| | - Grace Pei Chin
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
| | - Ziqiu Tong
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
| | - Bin Guan
- Future
Industries Institute, University of South
Australia, Mawson
Lakes, South Australia 5095, Australia
| | - Michael J. Sailor
- Department
of Chemistry and Biochemistry and Department of Nanoengineering, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Nicolas H. Voelcker
- Monash
Institute of Pharmaceutical Sciences, Monash
University, Parkville, Victoria 3052, Australia
- Melbourne
Centre for Nanofabrication, Victorian Node
of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
- Commonwealth
Scientific and Industrial Research Organisation (CSIRO), Clayton, Victoria 3168, Australia
| | - Beatriz Prieto-Simón
- Department
of Electronic Engineering, Universitat Rovira
i Virgili, Tarragona 43007, Spain
- ICREA, Pg. Lluís Companys 23, Barcelona 08010, Spain
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7
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Shanmugaraj K, Bustamante TM, Torres CC, Campos CH. Gold nanoparticles supported on mesostructured oxides for the enhanced catalytic reduction of 4-nitrophenol in water. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.05.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Kono H, Tsujisaki H, Tajima K. Reinforcing Poly(methyl methacrylate) with Bacterial Cellulose Nanofibers Chemically Modified with Methacryolyl Groups. NANOMATERIALS 2022; 12:nano12030537. [PMID: 35159882 PMCID: PMC8838691 DOI: 10.3390/nano12030537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/31/2022] [Accepted: 02/03/2022] [Indexed: 11/30/2022]
Abstract
Nanofibrillated bacterial cellulose (NFBC), a type of cellulose nanofiber biosynthesized by Gluconacetobacter sp., has extremely long (i.e., high-aspect-ratio) fibers that are expected to be useful as nanofillers for fiber-reinforced composite resins. In this study, we investigated a composite of NFBC and poly(methyl methacrylate) (PMMA), a highly transparent resin, with the aim of improving the mechanical properties of the latter. The abundant hydroxyl groups on the NFBC surface were silylated using 3-(methacryloyloxy)propyltrimethoxysilane (MPTMS), a silane coupling agent bearing a methacryloyl group as the organic functional group. The surface-modified NFBC was homogeneously dispersed in chloroform, mixed with neat PMMA, and converted into PMMA composites using a simple solvent-casting method. The tensile strength and Young’s modulus of the composite increased by factors of 1.6 and 1.8, respectively, when only 0.10 wt% of the surface-modified NFBC was added, without sacrificing the maximum elongation rate. In addition, the composite maintained the high transparency of PMMA, highlighting that the addition of MPTMS-modified NFBC easily reinforce PMMA. Furthermore, interactions involving the organic functional groups of MPTMS were found to be very important for reinforcing PMMA.
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Affiliation(s)
- Hiroyuki Kono
- Division of Applied Chemistry and Biochemistry, National Institute of Technology, Tomakomai College, Tomakomai 059-1275, Japan
- Correspondence: ; Tel.: +81-144-67-8036
| | - Haruto Tsujisaki
- Division of Applied Chemistry and Biochemistry, National Institute of Technology, Tomakomai College, Tomakomai 059-1275, Japan
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan;
| | - Kenji Tajima
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan;
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9
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Cisneros-Covarrubias CA, Gómez-Durán CF, Aguirre-Bañuelos P, Hernández-Esquivel RA, Palestino G. Tramadol extended-release porous silicon microcarriers: A kinetic, physicochemical and biological evaluation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Cheng R, Wang S, Moslova K, Mäkilä E, Salonen J, Li J, Hirvonen J, Xia B, Santos HA. Quantitative Analysis of Porous Silicon Nanoparticles Functionalization by 1H NMR. ACS Biomater Sci Eng 2021; 8:4132-4139. [PMID: 34292713 PMCID: PMC9554871 DOI: 10.1021/acsbiomaterials.1c00440] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
![]()
Porous silicon (PSi)
nanoparticles have been applied in various
fields, such as catalysis, imaging, and biomedical applications, because
of their large specific surface area, easily modifiable surface chemistry,
biocompatibility, and biodegradability. For biomedical applications,
it is important to precisely control the surface modification of PSi-based
materials and quantify the functionalization density, which determines
the nanoparticle’s behavior in the biological system. Therefore,
we propose here an optimized solution to quantify the functionalization
groups on PSi, based on the nuclear magnetic resonance (NMR) method
by combining the hydrolysis with standard 1H NMR experiments.
We optimized the hydrolysis conditions to degrade the PSi, providing
mobility to the molecules for NMR detection. The NMR parameters were
also optimized by relaxation delay and the number of scans to provide
reliable NMR spectra. With an internal standard, we quantitatively
analyzed the surficial amine groups and their sequential modification
of polyethylene glycol. Our investigation provides a reliable, fast,
and straightforward method in quantitative analysis of the surficial
modification characterization of PSi requiring a small amount of sample.
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Affiliation(s)
- Ruoyu Cheng
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland
| | - Shiqi Wang
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland
| | - Karina Moslova
- Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland
| | - Ermei Mäkilä
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, Turku FI-20014, Finland
| | - Jarno Salonen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, Turku FI-20014, Finland
| | - Jiachen Li
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland.,College of Science Key Laboratory of Forest Genetics & Biotechnology (Ministry of Education of China), Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Jouni Hirvonen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland
| | - Bing Xia
- College of Science Key Laboratory of Forest Genetics & Biotechnology (Ministry of Education of China), Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki FI-00014, Finland.,Helsinki Insititute of Life Science, HiLIFE, University of Helsinki, Helsinki FI-00014, Finland
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11
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Trzeciak K, Chotera-Ouda A, Bak-Sypien II, Potrzebowski MJ. Mesoporous Silica Particles as Drug Delivery Systems-The State of the Art in Loading Methods and the Recent Progress in Analytical Techniques for Monitoring These Processes. Pharmaceutics 2021; 13:pharmaceutics13070950. [PMID: 34202794 PMCID: PMC8309060 DOI: 10.3390/pharmaceutics13070950] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 12/17/2022] Open
Abstract
Conventional administration of drugs is limited by poor water solubility, low permeability, and mediocre targeting. Safe and effective delivery of drugs and therapeutic agents remains a challenge, especially for complex therapies, such as cancer treatment, pain management, heart failure medication, among several others. Thus, delivery systems designed to improve the pharmacokinetics of loaded molecules, and allowing controlled release and target specific delivery, have received considerable attention in recent years. The last two decades have seen a growing interest among scientists and the pharmaceutical industry in mesoporous silica nanoparticles (MSNs) as drug delivery systems (DDS). This interest is due to the unique physicochemical properties, including high loading capacity, excellent biocompatibility, and easy functionalization. In this review, we discuss the current state of the art related to the preparation of drug-loaded MSNs and their analysis, focusing on the newest advancements, and highlighting the advantages and disadvantages of different methods. Finally, we provide a concise outlook for the remaining challenges in the field.
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12
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Cisneros-Covarrubias CA, Palestino G, Gómez-Durán CFA, Rosales-Mendoza S, Betancourt-Mendiola MDL. Optimized microwave-assisted functionalization and quantification of superficial amino groups on porous silicon nanostructured microparticles. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:516-525. [PMID: 33443502 DOI: 10.1039/d0ay02083d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This work presents an optimized microwave (MW)-assisted method for the chemical functionalization of porous silicon particles (PSip). 3-(Aminopropyl)triethoxysilane (APTES) was grafted on previously stabilized PSip. The functionalization efficiency was studied and optimized in terms of reaction time (Rt) and reaction temperature (RT) using a central composite design (CCD). The effect of MW irradiation on the surface coverage was found to strongly depend on the PSip surface chemistry, Rt, RT, and percentage of APTES. Quantification of grafted amino groups was performed by the ninhydrin method (NHIM); confirming the results by thermogravimetric analysis (TGA). Reacting with 5% APTES solution at 95 °C for 26 min was the best functionalization conditions. The efficiency of PSip-APTES prepared under the optimized conditions was compared to those functionalized by the traditional method; MW irradiation increases by 39% the number of functional groups grafted onto the PSip surfaces with the additional benefit of having a drastic reduction in Rt.
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Affiliation(s)
- Cándida Anahy Cisneros-Covarrubias
- Laboratorio de Biopolímeros y Nanoestructuras, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico.
| | - Gabriela Palestino
- Laboratorio de Biopolímeros y Nanoestructuras, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico. and Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico
| | - César F A Gómez-Durán
- Laboratorio de Biopolímeros y Nanoestructuras, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico.
| | - Sergio Rosales-Mendoza
- Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico
| | - María de Lourdes Betancourt-Mendiola
- Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, C.P. 78210 San Luis Potosí, Mexico
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13
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Kono H, Uno T, Tsujisaki H, Matsushima T, Tajima K. Nanofibrillated Bacterial Cellulose Modified with (3-Aminopropyl)trimethoxysilane under Aqueous Conditions: Applications to Poly(methyl methacrylate) Fiber-Reinforced Nanocomposites. ACS OMEGA 2020; 5:29561-29569. [PMID: 33225187 PMCID: PMC7676300 DOI: 10.1021/acsomega.0c04533] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 10/13/2020] [Indexed: 05/08/2023]
Abstract
The development of eco-friendly fiber-reinforced composite resins is an important objective from an environmental perspective, and nanofibrillated bacterial cellulose (NFBC), with extremely long high-aspect-ratio fibers, is a filler material with high potential for use in such composite resins. In this study, we investigated chemical modification of the surfaces of NFBC fibers by coupling with (3-aminopropyl)trimethoxysilane and fabricated nanocomposite materials using the prepared surface-modified NFBC. The product prepared by the one-pot reaction of (3-aminopropyl)trimethoxysilane with NFBC microfibrils dispersed in aqueous acid retained the same nanofibril structure as the intact NFBC. The degree of molar substitution and the silicon states on the surface of the product depended on the NFBC/(3-aminopropyl)trimethoxysilane ratio. The thermal analysis revealed that the thermal degradation temperature of the products increases with an increase of degree of molar substitution. Highly transparent (78-89% at 600 nm) poly(methyl methacrylate)-based nanocomposites were prepared by solvent casting; the nanocomposite containing 1.0 wt % (3-aminopropyl)trimethoxysilylated NFBC was only 8% less transparent than neat poly(methyl methacrylate) at 600 nm. In addition, the tensile strength of the nanocomposite was more than twice that of neat poly(methyl methacrylate) when 1 wt % of the surface-modified NFBC was added. The surface-modified NFBC is expected to be a reinforcing nanofiber material that imparts excellent physical properties to fiber-reinforced resins.
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Affiliation(s)
- Hiroyuki Kono
- Division
of Applied Chemistry and Biochemistry, National Institute of Technology, Tomakomai College, Nishikioka 443, Tomakomai, Hokkaido 059 1275, Japan
- . Tel/Fax: +81 144 67 8036
| | - Taiki Uno
- Division
of Applied Chemistry and Biochemistry, National Institute of Technology, Tomakomai College, Nishikioka 443, Tomakomai, Hokkaido 059 1275, Japan
| | - Haruto Tsujisaki
- Division
of Applied Chemistry and Biochemistry, National Institute of Technology, Tomakomai College, Nishikioka 443, Tomakomai, Hokkaido 059 1275, Japan
| | - Tokuo Matsushima
- Kusano
Sakko Inc., Nishimachi
16, Kamiebetsu, Ebetsu, Hokkaido 067 0063, Japan
| | - Kenji Tajima
- Faculty
of Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido 060
8628, Japan
- .
Tel/Fax: +81 11 706 6603
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14
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Geng J, Song H, Gao F, Kong Y, Fu J, Luo J, Yang Y, Yu C. Lyophilization enabled disentanglement of polyethylenimine on rambutan-like silica nanoparticles for enhanced plasmid DNA delivery. J Mater Chem B 2020; 8:4593-4600. [PMID: 32391536 DOI: 10.1039/d0tb00720j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyethylenimine (PEI) functionalization onto nanoparticles is a widely used strategy for constructing particulate vectors for gene delivery. However, how to control the conformation of PEI chains and the resultant impact on gene transfection efficiency remains largely unexplored. Herein, we report that drying methods dramatically affect the conformation of PEI chains modified on the surface of silica nanoparticles and consequently the plasmid DNA transfection performance. Specifically, lyophilization renders less entangled PEI compared to commonly used vacuum drying as evidenced by an elevated glass transition temperature. The lyophilization induced disentangled conformation is likely associated with the solid-to-gas phase transition drying mechanism, which removes the bound crystal water content and thus reduces hydrogen bonding between amines. Moreover, we find that the stretched PEI chains on the surface of rambutan-like silica nanoparticles promote their binding capacity towards plasmid DNA molecules and thereby enhanced gene delivery and transfection efficiency. Our findings have provided new understanding about amine based polymers modified on nanoparticles, and have significant implications on the design of efficient particulate vectors for gene delivery.
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Affiliation(s)
- Jing Geng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia.
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15
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Jakobsson U, Mäkilä E, Rahikkala A, Imlimthan S, Lampuoti J, Ranjan S, Heino J, Jalkanen P, Köster U, Mizohata K, Santos HA, Salonen J, Airaksinen AJ, Sarparanta M, Helariutta K. Preparation and in vivo evaluation of red blood cell membrane coated porous silicon nanoparticles implanted with 155Tb. Nucl Med Biol 2020; 84-85:102-110. [PMID: 32334356 DOI: 10.1016/j.nucmedbio.2020.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 04/03/2020] [Accepted: 04/05/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Porous silicon (PSi) nanoparticles are capable of delivering therapeutic payloads providing targeted delivery and sustained release of the payloads. In this work we describe the development and proof-of-concept in vivo evaluation of thermally hydrocarbonized porous silicon (PSi) nanoparticles that are implanted with radioactive 155Tb atoms and coated with red blood cell (RBC) membrane (155Tb-THCPSi). The developed nanocomposites can be utilized as an intravenous delivery platform for theranostic radionuclides. METHODS THCPSi thin films were implanted with 155Dy ions that decay to 155Tb at the ISOLDE radioactive ion-beam (RIB) facility at CERN. The films were processed to nanoparticles by ball-milling and sonication, and subsequently coated with either a solid lipid and RBC membrane or solely with RBC membrane. The nanocomposites were evaluated in vitro for stability and in vivo for circulation half-life and ex vivo for biodistribution in Balb/c mice. RESULTS Nanoporous THCPSi films were successfully implanted with 155Tb and processed to coated nanoparticles. The in vitro stability of the particles in plasma and buffer solutions was not significantly different between the particle types, and therefore the RBC membrane coated particles with less laborious processing method were chosen for the biological evaluation. The RBC membrane coating enhanced significantly the blood half-life compared to bare THCPSi particles. In the ex vivo biodistribution study a pronounced accumulation to the spleen was found, with lower uptake in the liver and a minor uptake in the lung, gall bladder and bone marrow. CONCLUSIONS We have demonstrated, using 155Tb RIB-implanted PSi nanoparticles coated with mouse RBC membranes, the feasibility of using such a theranostic nanosystem for the delivery of RIB based radionuclides with prolonged circulation time. ADVANCES IN KNOWLEDGE AND IMPLICATIONS FOR PATIENT CARE For the first time, the RIB implantation technique has been utilized to produce PSi nanoparticle with a surface modified for better persistence in circulation. When optimized, these particles could be used in targeted radionuclide therapy with a combination of chemotherapeutic payload within the PSi structure.
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Affiliation(s)
- Ulrika Jakobsson
- Department of Chemistry, University of Helsinki, Finland; Helsinki Institute of Physics, University of Helsinki, Finland
| | - Ermei Mäkilä
- Department of Physics and Astronomy, University of Turku, Finland
| | - Antti Rahikkala
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Finland
| | | | | | - Sanjeev Ranjan
- Department of Chemistry, University of Helsinki, Finland; Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - Jouni Heino
- Helsinki Institute of Physics, University of Helsinki, Finland
| | - Pasi Jalkanen
- Department of Physics, University of Helsinki, Finland
| | | | | | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Finland; Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Finland
| | - Jarno Salonen
- Department of Physics and Astronomy, University of Turku, Finland
| | - Anu J Airaksinen
- Department of Chemistry, University of Helsinki, Finland; Turku PET Centre, University of Turku, Finland
| | | | - Kerttuli Helariutta
- Department of Chemistry, University of Helsinki, Finland; Helsinki Institute of Physics, University of Helsinki, Finland.
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16
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Abdul N, Rush MN, Nohava J, Amezcua U, Shreve AP, Cavallo F. Single-Cell Response to the Rigidity of Semiconductor Nanomembranes on Compliant Substrates. ACS APPLIED MATERIALS & INTERFACES 2020; 12:10697-10705. [PMID: 32027483 DOI: 10.1021/acsami.0c00426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Single-crystalline semiconductor nanomembranes (NMs) bonded to compliant substrates are increasingly used for biomedical research and in health care. Nevertheless, there is a limited understanding of how individual cells sense the unique mechanical properties of these substrates and adjust their behavior in response to them. In this work, we performed proliferation assays, cytoskeleton analysis, and focal adhesion (FA) studies for NIH-3T3 fibroblasts on 220 and 20 nm single-crystalline Si on polydimethylsiloxane (PDMS) substrates with an elastic modulus of ∼31 kPa. We also characterized cell response on bulk Si as a reference. Our in vitro studies show that varying the thickness of the NM between 20 and 220 nm affects the proliferation rate of the cells, their cytoskeleton, fiber organization, spread area, and degree of FA. For example, cultured cells on 220 nm Si/PMDS exhibit the same response as on bulk Si, that is, they are well-spread with a pentagonal (or dendritic) shape and show a good organization of stress fibers and FAs. On the other hand, the cells on 20 nm Si/PDMS are spherical, with fiber organization and FAs in undetectable levels. We explained the results of our in vitro studies through a shear-lag mechanical model. The calculated FA-substrate contact stiffnesses for fibroblasts on bulk Si and 220 nm Si/PDMS closely match, and they are significantly higher than the stiffness of the integrin clutches and the plaque. Conversely, focal contacts with 20 nm Si/PDMS have comparable lateral compliance to adhesion-mediating intracellular organisms. In conclusion, our work relies on recent advances in NM technology to fill a critical knowledge gap about how individual cells sense and react to the mechanical properties of NM-based substrates. Our findings will have a major impact on the design of flexible electronic materials for applications in biomedical science and health care.
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Affiliation(s)
- Nadeem Abdul
- Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Matthew N Rush
- Center for Biomedical Engineering and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Jiri Nohava
- Anton Paar TriTec SA, Vernets 6, 2035 Corcelles, Switzerland
| | - Ursula Amezcua
- Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Andrew P Shreve
- Center for Biomedical Engineering and Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Francesca Cavallo
- Center for High Technology Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico 87131, United States
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17
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Capek I. Smart therapeutic-polymer-loaded silica nanomaterials. Nanomedicine. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1719147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Ignác Capek
- Slovak Academy of Sciences, Institute of Measurement Science, Bratislava, Slovakia
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18
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Zanjanizadeh Ezazi N, Ajdary R, Correia A, Mäkilä E, Salonen J, Kemell M, Hirvonen J, Rojas OJ, Ruskoaho HJ, Santos HA. Fabrication and Characterization of Drug-Loaded Conductive Poly(glycerol sebacate)/Nanoparticle-Based Composite Patch for Myocardial Infarction Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:6899-6909. [PMID: 31967771 PMCID: PMC7450488 DOI: 10.1021/acsami.9b21066] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Heart tissue engineering is critical in the treatment of myocardial infarction, which may benefit from drug-releasing smart materials. In this study, we load a small molecule (3i-1000) in new biodegradable and conductive patches for application in infarcted myocardium. The composite patches consist of a biocompatible elastomer, poly(glycerol sebacate) (PGS), coupled with collagen type I, used to promote cell attachment. In addition, polypyrrole is incorporated because of its electrical conductivity and to induce cell signaling. Results from the in vitro experiments indicate a high density of cardiac myoblast cells attached on the patches, which stay viable for at least 1 month. The degradation of the patches does not show any cytotoxic effect, while 3i-1000 delivery induces cell proliferation. Conductive patches show high blood wettability and drug release, correlating with the rate of degradation of the PGS matrix. Together with the electrical conductivity and elongation characteristics, the developed biomaterial fits the mechanical, conductive, and biological demands required for cardiac treatment.
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Affiliation(s)
- Nazanin Zanjanizadeh Ezazi
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical
Engineering, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Alexandra Correia
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Ermei Mäkilä
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Jarno Salonen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Marianna Kemell
- Department of Chemistry, University of
Helsinki, FI-00014 Helsinki, Finland
| | - Jouni Hirvonen
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Orlando J. Rojas
- Department of Bioproducts and Biosystems, School of Chemical
Engineering, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
- Departments of Chemical
& Biological Engineering, Chemistry, and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Heikki J. Ruskoaho
- Drug Research Program, Division of Pharmacology and Pharmacotherapy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Hélder A. Santos
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
- Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland
- E-mail: .
Tel: +358 2941 59661
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19
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Controlling and Predicting the Dissolution Kinetics of Thermally Oxidised Mesoporous Silicon Particles: Towards Improved Drug Delivery. Pharmaceutics 2019; 11:pharmaceutics11120634. [PMID: 31795166 PMCID: PMC6955814 DOI: 10.3390/pharmaceutics11120634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/20/2019] [Accepted: 11/25/2019] [Indexed: 11/16/2022] Open
Abstract
Porous silicon (pSi) continues to receive considerable interest for use in applications ranging from sensors, biological scaffolds, therapeutic delivery systems to theranostics. Critical to all of these applications is pSi degradation and stabilization in biological media. Here we report on progress towards the development of a mechanistic understanding for the dissolution behavior of native (unoxidized) and thermally oxidized (200-600 °C) pSi microparticles. Fourier transform infrared (FTIR) spectroscopy was used to characterize the pSi surface chemistry after thermal oxidation. PSi dissolution was assessed using a USP method II apparatus by monitoring the production of orthosilicic acid, and the influence of gastro-intestinal (GI) fluids were examined. Fitting pSi dissolution kinetics with a sum of the exponential model demonstrated that the dissolution process strongly correlates with the three surface hydride species and their relative reactivity, and was supported by the observed FTIR spectral changes of pSi during dissolution. Finally, the presence of GI proteins was shown to hamper pSi dissolution by adsorption to the pSi surface acting as a barrier preventing water attack. These findings are significant in the optimal design of pSi particles for oral delivery and other controlled drug delivery applications.
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20
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Yang Y, Wang L, Wan B, Gu Y, Li X. Optically Active Nanomaterials for Bioimaging and Targeted Therapy. Front Bioeng Biotechnol 2019; 7:320. [PMID: 31803728 PMCID: PMC6873787 DOI: 10.3389/fbioe.2019.00320] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 10/25/2019] [Indexed: 12/23/2022] Open
Abstract
Non-invasive tracking for monitoring the selective delivery and transplantation of biotargeted agents in vivo has been employed as one of the most effective tools in the field of nanomedicine. Different nanoprobes have been developed and applied to bioimaging tissues and the treatment of diseases ranging from inflammatory and cardiovascular diseases to cancer. Herein, we will review the recent advances in the development of optics-responsive nanomaterials, including organic and inorganic nanoparticles, for multimodal bioimaging and targeted therapy. The main focus is placed on nanoprobe fabrication, mechanistic illustrations, and diagnostic, or therapeutical applications. These nanomedicine strategies have promoted a better understanding of the biological events underlying diverse disease etiologies, thereby facilitating diagnosis, illness evaluation, therapeutic effect, and drug discovery.
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Affiliation(s)
- Yu Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Li Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Bin Wan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Yuxin Gu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Xinxin Li
- Rural Energy and Environment Agency, Ministry of Agriculture, Beijing, China
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21
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Automatic methodologies to perform loading and release assays of anticancer drugs from mesoporous silicon nanoparticles. Talanta 2019; 196:277-283. [PMID: 30683364 DOI: 10.1016/j.talanta.2018.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 12/07/2018] [Accepted: 12/10/2018] [Indexed: 12/30/2022]
Abstract
Two automatic methodologies were developed to perform the loading and release assays of drugs from porous silicon (PSi) nanoparticles. 5-Fluorouracil (5-FU) was selected as a model drug, and different functionalized PSi nanoparticles were used. While for drug loading studies the reproducible characteristics of flow systems were explored regarding mixture and volumes taken, in the drug release flow methodology versatility in accommodating different devices around the valve were tested. Fluorescent properties of 5-FU were used with detection limit of 9 × 10-4 mg L-1 and a linear response up to 5 mg L-1 The drug loading and release procedures were optimized in sequential injection analysis (SIA) systems obtaining a huge economy regarding the time spent (4 min towards 2 h). Batch and SIA methods were tested and compared for the different behaviours of the PSi nanoparticles towards both methodologies and no noteworthy differences were obtained with Student's t-test for loading with a calculated t value of 2.04 showing the absence of statistical differences. All the results present a RSD less than 10%. So, the developed automatic methodologies are a viable alternative to load drugs and to study the release profiles from PSi nanoparticles.
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22
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Mozetič M. Surface Modification to Improve Properties of Materials. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E441. [PMID: 30709009 PMCID: PMC6384733 DOI: 10.3390/ma12030441] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 12/17/2022]
Abstract
Surface properties of modern materials are usually inadequate in terms of wettability, adhesion properties, biocompatibility etc., so they should be modified prior to application or any further processing such as coating with functional materials. Both the morphological properties and chemical structure/composition should be modified in order to obtain a desired surface finish. Various treatment procedures have been employed, and many are based on the application of non-equilibrium gaseous media, especially gaseous plasma. Although such treatments have been studied extensively in past decades and actually commercialized, the exact mechanisms of interaction between reactive gaseous species and solid materials is still inadequately understood. This special issue provides recent trends in nanostructuring and functionalization of solid materials with the goal of improving their functional properties.
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Affiliation(s)
- Miran Mozetič
- Department of Surface Engineering, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
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23
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Rodriguez C, Muñoz Noval A, Torres-Costa V, Ceccone G, Manso Silván M. Visible Light Assisted Organosilane Assembly on Mesoporous Silicon Films and Particles. MATERIALS 2019; 12:ma12010131. [PMID: 30609796 PMCID: PMC6337525 DOI: 10.3390/ma12010131] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 12/17/2018] [Accepted: 12/25/2018] [Indexed: 12/13/2022]
Abstract
Porous silicon (PSi) is a versatile matrix with tailorable surface reactivity, which allows the processing of a range of multifunctional films and particles. The biomedical applications of PSi often require a surface capping with organic functionalities. This work shows that visible light can be used to catalyze the assembly of organosilanes on the PSi, as demonstrated with two organosilanes: aminopropyl-triethoxy-silane and perfluorodecyl-triethoxy-silane. We studied the process related to PSi films (PSiFs), which were characterized by X-ray photoelectron spectroscopy (XPS), time of flight secondary ion mass spectroscopy (ToF-SIMS) and field emission scanning electron microscopy (FESEM) before and after a plasma patterning process. The analyses confirmed the surface oxidation and the anchorage of the organosilane backbone. We further highlighted the surface analytical potential of 13C, 19F and 29Si solid-state NMR (SS-NMR) as compared to Fourier transformed infrared spectroscopy (FTIR) in the characterization of functionalized PSi particles (PSiPs). The reduced invasiveness of the organosilanization regarding the PSiPs morphology was confirmed using transmission electron microscopy (TEM) and FESEM. Relevantly, the results obtained on PSiPs complemented those obtained on PSiFs. SS-NMR suggests a number of siloxane bonds between the organosilane and the PSiPs, which does not reach levels of maximum heterogeneous condensation, while ToF-SIMS suggested a certain degree of organosilane polymerization. Additionally, differences among the carbons in the organic (non-hydrolyzable) functionalizing groups are identified, especially in the case of the perfluorodecyl group. The spectroscopic characterization was used to propose a mechanism for the visible light activation of the organosilane assembly, which is based on the initial photoactivated oxidation of the PSi matrix.
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Affiliation(s)
- Chloé Rodriguez
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Alvaro Muñoz Noval
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Vicente Torres-Costa
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
- Centro de Microanálisis de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Giacomo Ceccone
- European Commission, Joint Research Center, 21020 Ispra (Va), Italy.
| | - Miguel Manso Silván
- Departamento de Física Aplicada and Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
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24
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Qi S, Zhang P, Ma M, Yao M, Wu J, Mäkilä E, Salonen J, Ruskoaho H, Xu Y, Santos HA, Zhang H. Cellular Internalization-Induced Aggregation of Porous Silicon Nanoparticles for Ultrasound Imaging and Protein-Mediated Protection of Stem Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804332. [PMID: 30488562 DOI: 10.1002/smll.201804332] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/14/2018] [Indexed: 05/19/2023]
Abstract
Nanotechnology employs multifunctional engineered materials in the nanoscale range that provides many opportunities for translational stem cell research and therapy. Here, a cell-penetrating peptide (virus-1 transactivator of transcription)-conjugated, porous silicon nanoparticle (TPSi NP) loaded with the Wnt3a protein to increase both the cell survival rate and the delivery precision of stem cell transplantation via a combinational theranostic strategy is presented. The TPSi NP with a pore size of 10.7 nm and inorganic framework enables high-efficiency loading of Wnt3a, prolongs Wnt3a release, and increases antioxidative stress activity in the labeled mesenchymal stem cells (MSCs), which are highly beneficial properties for cell protection in stem cell therapy for myocardial infarction. It is confirmed that the intracellular aggregation of TPSi NPs can highly amplify the acoustic scattering of the labeled MSCs, resulting in a 2.3-fold increase in the ultrasound (US) signal compared with that of unlabeled MSCs. The translational potential of the designed nanoagent for real-time US imaging-guided stem cell transplantation is confirmed via intramyocardial injection of labeled MSCs in a nude mouse model. It is proposed that the intracellular aggregation of protein drug-loaded TPSi NPs could be a simple but robust strategy for improving the therapeutic effect of stem cell therapy.
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Affiliation(s)
- Shengcai Qi
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Pengfei Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research of Chinese Ministry of Education, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Ming Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Department of Pharmaceutical Science Laboratory, Åbo Akademi University, Turku, 20520, Finland
| | - Minghua Yao
- Department of Pharmaceutical Science Laboratory, Åbo Akademi University, Turku, 20520, Finland
| | - Jinjin Wu
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Ermei Mäkilä
- Department of Physics and Astronomy, University of Turku, Turku, 20014, Finland
| | - Jarno Salonen
- Department of Physics and Astronomy, University of Turku, Turku, 20014, Finland
| | - Heikki Ruskoaho
- Drug Research Program, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Yuanzhi Xu
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Hélder A Santos
- Drug Research Program, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Hongbo Zhang
- Department of Pharmaceutical Science Laboratory, Åbo Akademi University, Turku, 20520, Finland
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26
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Liu D, Lipponen K, Quan P, Wan X, Zhang H, Mäkilä E, Salonen J, Kostiainen R, Hirvonen J, Kotiaho T, Santos HA. Impact of Pore Size and Surface Chemistry of Porous Silicon Particles and Structure of Phospholipids on Their Interactions. ACS Biomater Sci Eng 2018; 4:2308-2313. [PMID: 30159385 PMCID: PMC6108535 DOI: 10.1021/acsbiomaterials.8b00343] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 06/14/2018] [Indexed: 02/06/2023]
Abstract
![]()
By exploiting its porous structure
and high loading capacity, porous
silicon (PSi) is a promising biomaterial to fabricate protocells and
biomimetic reactors. Here, we have evaluated the impact of physicochemical
properties of PSi particles [thermally oxidized PSi, TOPSi; annealed
TOPSi, AnnTOPSi; (3-aminopropyl) triethoxysilane functionalized thermally
carbonized PSi, APTES-TCPSi; and thermally hydrocarbonized PSi, THCPSi]
on their surface interactions with different phospholipids. All of
the four phospholipids were similarly adsorbed by the surface of PSi
particles, except for TOPSi. Among four PSi particles, TOPSi with
hydrophilic surface and smaller pore size showed the weakest adsorption
toward phosphatidylcholines. By increasing the pore size from roughly
12.5 to 18.0 nm (TOPSi vs AnnTOPSi), the quantity of phosphatidylcholines
adsorbed by TOPSi was enhanced to the same level of hydrophilic APTES-TCPSi
and hydrophobic THCPSi. The 1,2-dioleoyl-sn-glycero-3-phosphocholine
(DOPC) exhibited the highest release ratio of phospholipids from all
four PSi particles, and phosphatidylserine (DPPS) showed the lowest
release ratio of phospholipids from PSi particles, except for TOPSi,
which adsorbed less phospholipids due to the small pore size. There
is consistency in the release extent of phospholipids from PSi particles
and the isosteric heat of adsorption. Overall, our study demonstrates
the importance of pore size and surface chemistry of PSi particles
as well as the structure of phospholipids on their interactions. The
obtained information can be employed to guide the selection of PSi
particles and phospholipids to fabricate highly ordered structures,
for example, protocells, or biomimetic reactors.
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Affiliation(s)
- Dongfei Liu
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland.,Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland
| | - Katriina Lipponen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland
| | - Peng Quan
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland.,Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Xiaocao Wan
- Department of Pharmaceutical Science, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, China
| | - Hongbo Zhang
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland.,Department of Pharmaceutical Science, Åbo Akademi University, Turku FI-20520, Finland
| | - Ermei Mäkilä
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, Turku FI-20014, Finland
| | - Jarno Salonen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, Turku FI-20014, Finland
| | - Risto Kostiainen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland
| | - Jouni Hirvonen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland
| | - Tapio Kotiaho
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland.,Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland.,Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, Helsinki Institute of Life Science, HiLIFE, and Department of Chemistry, Faculty of Science, University of Helsinki, Helsinki FI-00014, Finland
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Li W, Liu Z, Fontana F, Ding Y, Liu D, Hirvonen JT, Santos HA. Tailoring Porous Silicon for Biomedical Applications: From Drug Delivery to Cancer Immunotherapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1703740. [PMID: 29534311 DOI: 10.1002/adma.201703740] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/16/2017] [Indexed: 05/24/2023]
Abstract
In the past two decades, porous silicon (PSi) has attracted increasing attention for its potential biomedical applications. With its controllable geometry, tunable nanoporous structure, large pore volume/high specific surface area, and versatile surface chemistry, PSi shows significant advantages over conventional drug carriers. Here, an overview of recent progress in the use of PSi in drug delivery and cancer immunotherapy is presented. First, an overview of the fabrication of PSi with various geometric structures is provided, with particular focus on how the unique geometry of PSi facilitates its biomedical applications, especially for drug delivery. Second, surface chemistry and modification of PSi are discussed in relation to the strengthening of its performance in drug delivery and bioimaging. Emerging technologies for engineering PSi-based composites are then summarized. Emerging PSi advances in the context of cancer immunotherapy are also highlighted. Overall, very promising research results encourage further exploration of PSi for biomedical applications, particularly in drug delivery and cancer immunotherapy, and future translation of PSi into clinical applications.
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Affiliation(s)
- Wei Li
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Zehua Liu
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Flavia Fontana
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Yaping Ding
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Dongfei Liu
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
- Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014, Helsinki, Finland
| | - Jouni T Hirvonen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland
- Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014, Helsinki, Finland
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Salonen J, Mäkilä E. Thermally Carbonized Porous Silicon and Its Recent Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1703819. [PMID: 29484727 DOI: 10.1002/adma.201703819] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 09/08/2017] [Indexed: 06/08/2023]
Abstract
Recent progress in research on thermally carbonized porous silicon (TCPSi) and its applications is reported. Despite a slow start, thermal carbonization has now started to gain interest mainly due to new emerging areas for applications. These new areas, such as optical sensing, drug delivery, and energy storage, require stable surface chemistry and physical properties. TCPSi is known to have all of these desired properties. Herein, the above-listed properties of TCPSi are summarized, and the carbonization processes, functionalization, and characterization of TCPSi are reviewed. Moreover, some of the emerging fields of TCPSi applications are discussed and recent advances in the fields are introduced.
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Affiliation(s)
- Jarno Salonen
- Industrial Physics Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland
| | - Ermei Mäkilä
- Industrial Physics Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014, Turku, Finland
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McInnes SJP, Santos A, Kumeria T. Porous Silicon Particles for Cancer Therapy and Bioimaging. NANOONCOLOGY 2018. [DOI: 10.1007/978-3-319-89878-0_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Shapovalova I, Vurasko A, Petrov L, Kraus E, Leicht H, Heilig M, Stoyanov O. Hybrid composites based on technical cellulose from rice husk. J Appl Polym Sci 2017. [DOI: 10.1002/app.45796] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Irina Shapovalova
- Ural State Forest Engineering University; Institute of Chemical Processing of Vegetable Raw Materials and Industrial Ecology; Yekaterinburg 620100 Russian Federation
| | - Alesya Vurasko
- Ural State Forest Engineering University; Institute of Chemical Processing of Vegetable Raw Materials and Industrial Ecology; Yekaterinburg 620100 Russian Federation
| | - Lev Petrov
- Russian Academy of Sciences; Institute of Organic Synthesis; Yekaterinburg 620990 Russian Federation
| | - Eduard Kraus
- SKZ-German Plastics Center; Research and Development, Adhesive Bonding and Surface Engineering; Wuerzburg 97076 Germany
| | - Heinrich Leicht
- SKZ-German Plastics Center; Research and Development, Adhesive Bonding and Surface Engineering; Wuerzburg 97076 Germany
| | - Michael Heilig
- SKZ-German Plastics Center; Research and Development, Adhesive Bonding and Surface Engineering; Wuerzburg 97076 Germany
| | - Oleg Stoyanov
- Kazan National Research Technological University; Faculty of Plastics and Composite Materials Technology, Processing and Certification; Kazan 420015 Russian Federation
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Kumeria T, McInnes SJP, Maher S, Santos A. Porous silicon for drug delivery applications and theranostics: recent advances, critical review and perspectives. Expert Opin Drug Deliv 2017; 14:1407-1422. [DOI: 10.1080/17425247.2017.1317245] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Tushar Kumeria
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
| | - Steven J. P. McInnes
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, Mawson Lakes, Australia
| | - Shaheer Maher
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
- Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Abel Santos
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, Australia
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, Australia
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Ollikainen E, Liu D, Kallio A, Mäkilä E, Zhang H, Salonen J, Santos HA, Sikanen TM. The impact of porous silicon nanoparticles on human cytochrome P450 metabolism in human liver microsomes in vitro. Eur J Pharm Sci 2017; 104:124-132. [PMID: 28366651 DOI: 10.1016/j.ejps.2017.03.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/08/2017] [Accepted: 03/28/2017] [Indexed: 02/05/2023]
Abstract
Engineered nanoparticles are increasingly used as drug carriers in pharmaceutical formulations. This study focuses on the hitherto unaddressed impact of porous silicon (PSi) nanoparticles on human cytochrome P450 (CYP) metabolism, which is the major detoxification route of most pharmaceuticals and other xenobiotics. Three different surface chemistries, including thermally carbonized PSi (TCPSi), aminopropylsilane-modified TCPSi (APTES-TCPSi) and alkyne-terminated thermally hydrocarbonized PSi (Alkyne-THCPSi), were compared for their effects on the enzyme kinetics of the major CYP isoforms (CYP1A2, CYP2A6, CYP2D6, and CYP3A4) in human liver microsomes (HLM) in vitro. The enzyme kinetic parameters, Km and Vmax, and the intrinsic clearance (CLint) were determined using FDA-recommended, isoenzyme-specific model reactions with and without PSi nanoparticles. Data revealed statistically significant alterations of most isoenzyme activities in HLM in the presence of nanoparticles at 1mg/ml concentration, and polymorphic CYP2D6 was the most vulnerable to enzyme inhibition. However, the observed CYP2D6 inhibition was shown to be dose-dependent in case of TCPSi and Alkyne-THCPSi nanoparticles and attenuated at the concentrations below 1μg/ml. Adsorption of the probe substrates onto the hydrophobic Alkyne-THCPSi particles was also observed and taken into account in the determination of the kinetic parameters. Three polymer additives commonly used in pharmaceutical nanoformulations (Pluronics F68 and F127, and polyvinylalcohol) were also separately screened for their effects on CYP isoenzyme activities. These polymers had less effect on the enzyme kinetic parameters, and resulted in increased activity rather than enzyme inhibition, in contrast to the PSi nanoparticles. Although the chosen subcellular model (HLM) is not able to predict the cellular disposition of PSi nanoparticles in hepatocytes and thus provides limited information of probability of CYP interactions in vivo, the present study suggests that mechanistic interactions by the PSi nanoparticles or the polymer stabilizers may appear if these are effectively uptaken by the hepatocytes.
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Affiliation(s)
- Elisa Ollikainen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Dongfei Liu
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Arttu Kallio
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Ermei Mäkilä
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, Turku, Finland
| | - Hongbo Zhang
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Jarno Salonen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, Turku, Finland
| | - Hélder A Santos
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Tiina M Sikanen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland.
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Yuryev M, Ferreira MPA, Balasubramanian V, Correia AMR, Mäkilä EM, Jokinen V, Andriichuk L, Kemell M, Salonen JJ, Hirvonen JT, Santos HA, Rivera C. Active diffusion of nanoparticles of maternal origin within the embryonic brain. Nanomedicine (Lond) 2016; 11:2471-81. [DOI: 10.2217/nnm-2016-0207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Aim: To investigate porous silicon (PSi) nanoparticles (NPs) behavior in the embryonic brain. Materials & methods: Fluorescently labeled PSi NPs were injected into the embryonic brains intraventricularly and to the mother intravenously (iv.). Brain histology from different time points up to 3 days was analyzed and live brains imaged with two-photon microscopy. Results: PSi NPs were able to penetrate 80% of the embryonic cortical depth. Particle motility was confirmed in real-time in vivo. PSi NPs were able to penetrate the embryonic cortex after either iv. maternal or intraventricular injection. No developmental of macromorphological changes or increased cell apoptosis was observed. Conclusion: PSi NPs penetrate deep in the brain tissues of embryos after intraventricular injection and after iv. injection to the mother.
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Affiliation(s)
- Mikhail Yuryev
- Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
| | - Mónica PA Ferreira
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Vimalkumar Balasubramanian
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Alexandra MR Correia
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Ermei M Mäkilä
- Laboratory of Industrial Physics, Department of Physics & Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Ville Jokinen
- Aalto University, School of Chemical Technology, FI-02150 Espoo, Finland
| | - Liliia Andriichuk
- Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
| | - Marianna Kemell
- Department of Chemistry, University of Helsinki, PO Box 55, FI-00014 Helsinki, Finland
| | - Jarno J Salonen
- Laboratory of Industrial Physics, Department of Physics & Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Jouni T Hirvonen
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Hélder A Santos
- Division of Pharmaceutical Chemistry & Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Claudio Rivera
- Neuroscience Center, University of Helsinki, FI-00014 Helsinki, Finland
- Institut de Neurobiologie de la Méditerranée, Institut National de la Santé et de la Recherche Médicale Unité 901, 13009 Marseille, France Aix-Marseille Université, Unité Mixte de Recherche 901, 13273 Marseille, France
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He Y, Jawad A, Li X, Atanga M, Rezaei F, Rownaghi AA. Direct aldol and nitroaldol condensation in an aminosilane-grafted Si/Zr/Ti composite hollow fiber as a heterogeneous catalyst and continuous-flow reactor. J Catal 2016. [DOI: 10.1016/j.jcat.2016.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wong KT, Yoon Y, Snyder SA, Jang M. Phenyl-functionalized magnetic palm-based powdered activated carbon for the effective removal of selected pharmaceutical and endocrine-disruptive compounds. CHEMOSPHERE 2016; 152:71-80. [PMID: 26963238 DOI: 10.1016/j.chemosphere.2016.02.090] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 02/19/2016] [Accepted: 02/21/2016] [Indexed: 06/05/2023]
Abstract
Triethoxyphenylsilane (TEPS)-functionalized magnetic palm-based powdered activated carbon (MPPAC-TEPS) was prepared and characterized using various spectroscopic methods, and then tested for the removal of bisphenol A, carbamazepine, ibuprofen and clofibric acid. Magnetite film on MPPAC-TEPS was homogeneously coated on the outer surface of palm-based powdered activated carbon (PPAC) through a hydrothermal co-precipitation technique. Followed by silanization of phenyl-functionalized organosilane on MPPAC's magnetic film. As results, micro/mesopore surface area and volume increased without significant pore clogging and iron (Fe) dissolution under the acidic conditions was greatly decreased. The unique structural and chemical features of MPPAC-TEPS were found to be the main reasons for the enhanced adsorption rates and removal capacities of POPs. The presence of electrolytes and different pH values greatly affected the sorption efficiencies. The dominant sorption mechanism of POPs by MPPAC-TEPS was determined to be π-π interaction (physisorption), based on thermodynamic (ΔG°) and differential scanning calorimetry (DSC). Thermal regeneration at a low temperature (350 °C) was an effective method to desorb the retained POPs and enabled to reactivate MPPAC-TEPS with sustained sorption rates and capacities, whereas PPAC was largely exhausted. As a new type of sorbent for POPs, MPPAC-TEPS has operational advantages, such as magnetic separation and stable regeneration.
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Affiliation(s)
- Kien Tiek Wong
- Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Yeomin Yoon
- Department of Civil and Environmental Engineering, University of South Carolina, Columbia, SC, 29208, USA
| | - Shane A Snyder
- Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, USA
| | - Min Jang
- Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia; Department of Environmental Engineering, Kwangwoon University, 447-1 Wolgye-Dong Nowon-Gu, Seoul, Republic of Korea.
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Rownaghi AA, Kant A, Li X, Thakkar H, Hajari A, He Y, Brennan PJ, Hosseini H, Koros WJ, Rezaei F. Aminosilane-Grafted Zirconia-Titiania-Silica Nanoparticles/Torlon Hollow Fiber Composites for CO2 Capture. CHEMSUSCHEM 2016; 9:1166-1177. [PMID: 27076214 DOI: 10.1002/cssc.201600082] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 02/20/2016] [Indexed: 06/05/2023]
Abstract
In this work, the development of novel binary and ternary oxide/Torlon hollow fiber composites comprising zirconia, titania, and silica as amine supports was demonstrated. The resulting binary (Zr-Si/PAI-HF, Ti-Si/PAI-HF) and ternary (Zr-Ti-Si/PAI-HF) composites were then functionalized with monoamine-, diamine-, and triamine-substituted trialkoxysilanes and were evaluated in CO2 capture. Although the introduction of both Zr and Ti improved the CO2 adsorption capacity relative to that with Si/PAI-HF sorbents, zirconia was found to have a more favorable effect on the CO2 adsorption performance than titania, as previously demonstrated for amine sorbents in the powder form. The Zr-Ti-Si/PAI-HF sample with an oxide content of 20 wt % was found to exhibit a relatively high CO2 capacity, that is, 1.90 mmol g(-1) at atmospheric pressure under dry conditions, owing to more favorable synergy between the metal oxides and CO2 . The ternary fiber sorbent showed improved sorption kinetics and long-term stability in cyclic adsorption/desorption runs.
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Affiliation(s)
- Ali A Rownaghi
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA
| | - Amit Kant
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
| | - Xin Li
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
| | - Harshul Thakkar
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
| | - Amit Hajari
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
| | - Yingxin He
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
| | - Patrick J Brennan
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
| | - Hooman Hosseini
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA
| | - William J Koros
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA
| | - Fateme Rezaei
- Department of Chemical & Biochemical Engineering, Missouri University of Science and Technology, 110 N State St., Rolla, MO, 65409, USA.
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Hasanzadeh Kafshgari M, Delalat B, Harding FJ, Cavallaro A, Mäkilä E, Salonen J, Vasilev K, Voelcker NH. Antibacterial properties of nitric oxide-releasing porous silicon nanoparticles. J Mater Chem B 2016; 4:2051-2058. [PMID: 32263082 DOI: 10.1039/c5tb02551f] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the antibacterial efficacy of NO-releasing porous silicon nanoparticles (pSiNPs) is reported. NO-releasing pSiNPs were produced via the conjugation of S-nitrosothiol (SNO) and S-nitrosoglutathione (GSNO) donors to the nanoparticle surfaces. The release of the conjugated NO caused by the decomposition of the conjugated SNO and GSNO was boosted in the presence of ascorbic acid. The released NO was bactericidal to Gram-positive (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli), and eliminated bacterial growth within 2 h of incubation without compromising the viability of mammalian cells. These results demonstrate the advantages of NO-releasing pSiNPs for antibacterial applications, for example, in chronic wound treatment.
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Affiliation(s)
- M Hasanzadeh Kafshgari
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Future Industries Institute, University of South Australia, GPO Box 2471, Adelaide SA 5001, Australia.
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Kovalainen M, Mönkäre J, Riikonen J, Pesonen U, Vlasova M, Salonen J, Lehto VP, Järvinen K, Herzig KH. Novel delivery systems for improving the clinical use of peptides. Pharmacol Rev 2016; 67:541-61. [PMID: 26023145 DOI: 10.1124/pr.113.008367] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Peptides have long been recognized as a promising group of therapeutic substances to treat various diseases. Delivery systems for peptides have been under development since the discovery of insulin for the treatment of diabetes. The challenge of using peptides as drugs arises from their poor bioavailability resulting from the low permeability of biological membranes and their instability. Currently, subcutaneous injection is clinically the most common administration route for peptides. This route is cost-effective and suitable for self-administration, and the development of appropriate dosing equipment has made performing the repeated injections relatively easy; however, only few clinical subcutaneous peptide delivery systems provide sustained peptide release. As a result, frequent injections are needed, which may cause discomfort and additional risks resulting from a poor administration technique. Controlled peptide delivery systems, able to provide required therapeutic plasma concentrations over an extended period, are needed to increase peptide safety and patient compliancy. In this review, we summarize the current peptidergic drugs, future developments, and parenteral peptide delivery systems. Special emphasis is given to porous silicon, a novel material in peptide delivery. Biodegradable and biocompatible porous silicon possesses some unique properties, such as the ability to carry exceptional high peptide payloads and to modify peptide release extensively. We have successfully developed porous silicon as a carrier material for improved parenteral peptide delivery. Nanotechnology, with its different delivery systems, will enable better use of peptides in several therapeutic applications in the near future.
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Affiliation(s)
- Miia Kovalainen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Juha Mönkäre
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Joakim Riikonen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Ullamari Pesonen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Maria Vlasova
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Jarno Salonen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Vesa-Pekka Lehto
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Kristiina Järvinen
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
| | - Karl-Heinz Herzig
- Institute of Biomedicine and Biocenter of Oulu, Faculty of Medicine (M.K., K.-H.H.) and Medical Research Center Oulu and Oulu University Hospital (K.-H.H.), Oulu, Finland; Department of Applied Physics, Faculty of Science and Forestry (J.R.), Department of Applied Physics, Faculty of Science and Forestry (V.-P.L.), and School of Pharmacy, Faculty of Health Sciences (M.V., K.J.), University of Eastern Finland, Kuopio, Finland; Department of Pharmacology, Drug Development and Therapeutics (U.P.), and Department of Physics and Astronomy, Faculty of Mathematics and Natural Sciences (J.S.), University of Turku, Finland; and Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands (J.M.)
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39
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Taghavi F, Saljooghi AS, Gholizadeh M, Ramezani M. Deferasirox-coated iron oxide nanoparticles as a potential cytotoxic agent. MEDCHEMCOMM 2016. [DOI: 10.1039/c6md00293e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two broad strategies for the use of iron chelators in cancer treatment have been explored.
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Affiliation(s)
- Faezeh Taghavi
- Department of Chemistry
- Ferdowsi University of Mashhad
- Mashhad
- Iran
| | | | | | - Mohammad Ramezani
- Pharmaceutical Research Center
- School of Pharmacy
- Mashhad University of Medical Sciences
- Mashhad
- Iran
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40
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Stojanovic V, Cunin F, Durand JO, Garcia M, Gary-Bobo M. Potential of porous silicon nanoparticles as an emerging platform for cancer theranostics. J Mater Chem B 2016; 4:7050-7059. [DOI: 10.1039/c6tb01829g] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Currently, nanoscience is a major part of biomedical research, due to material advances that aid the development of new tools and techniques to replace traditional methods. Here we describe the theranostic potential of multifunctional porous silicon nanoparticles to target, image and treat cancer.
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Affiliation(s)
- V. Stojanovic
- Institut des Biomolécules Max Mousseron
- UMR5247CNRS-UM
- 34093 Montpellier Cedex 05
- France
| | - F. Cunin
- Institut Charles Gerhardt Montpellier
- UMR5253CNRS-ENSCM-UM
- Ecole Nationale Supérieure de Chimie Montpellier
- 8 rue de l'Ecole Normale
- 34296 Montpellier
| | - J. O. Durand
- Institut Charles Gerhardt Montpellier
- UMR5253CNRS-ENSCM-UM
- Ecole Nationale Supérieure de Chimie Montpellier
- 8 rue de l'Ecole Normale
- 34296 Montpellier
| | - M. Garcia
- Institut des Biomolécules Max Mousseron
- UMR5247CNRS-UM
- 34093 Montpellier Cedex 05
- France
| | - M. Gary-Bobo
- Institut des Biomolécules Max Mousseron
- UMR5247CNRS-UM
- 34093 Montpellier Cedex 05
- France
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41
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Rownaghi AA, Rezaei F, Labreche Y, Brennan PJ, Johnson JR, Li FS, Koros WJ. In situ Formation of a Monodispersed Spherical Mesoporous Nanosilica-Torlon Hollow-Fiber Composite for Carbon Dioxide Capture. CHEMSUSCHEM 2015; 8:3439-3450. [PMID: 26355795 DOI: 10.1002/cssc.201500906] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Indexed: 06/05/2023]
Abstract
We describe a new template-free method for the in situ formation of a monodispersed spherical mesoporous nanosilica-Torlon hollow-fiber composite. A thin layer of Torlon hollow fiber that comprises silica nanoparticles was created by the in situ extrusion of a tetraethyl orthosilicate/N-methyl-2-pyrrolidone solution in a sheath layer and a Torlon polymer dope in a core support layer. This new method can be integrated easily into current hollow-fiber composite fabrication processes. The hollow-fiber composites were then functionalized with 3-aminopropyltrimethoxy silane (APS) and evaluated for their CO2 -capture performance. The resulting APS-functionalized mesoporous silica nanoparticles/Torlon hollow fibers exhibited a high CO2 equilibrium capacity of 1.5 and 1.9 mmol g(-1) at 35 and 60 °C, respectively, which is significantly higher than values for fiber sorbents without nanoparticles reported previously.
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Affiliation(s)
- Ali A Rownaghi
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 110 N State, St. Rolla, MO, 65409, USA.
| | - Fateme Rezaei
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 110 N State, St. Rolla, MO, 65409, USA
| | - Ying Labreche
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA
| | - Patrick J Brennan
- Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, 110 N State, St. Rolla, MO, 65409, USA
| | - Justin R Johnson
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA
| | - Fuyue Stephanie Li
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA
| | - William J Koros
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, GA, 30332, USA.
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42
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Sweetman MJ, McInnes SJP, Vasani RB, Guinan T, Blencowe A, Voelcker NH. Rapid, metal-free hydrosilanisation chemistry for porous silicon surface modification. Chem Commun (Camb) 2015; 51:10640-3. [PMID: 26040947 DOI: 10.1039/c5cc02689j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here, we report a novel surface modification for porous silicon (pSi). Hydroxyl-terminated pSi surfaces are modified with a hydrosilane via Si-H activation using the Lewis acid catalyst tris(pentafluorophenyl) borane. This surface reaction is fast and efficient at room temperature, and leads to a surface stabilised against hydrolytic attack in aqueous media. The resulting surface shows promise as a substrate for surface-assisted laser desorption/ionisation mass spectrometry.
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Affiliation(s)
- M J Sweetman
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Mawson Institute, University of South Australia, Australia.
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43
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Wang CF, Mäkilä EM, Kaasalainen MH, Hagström MV, Salonen JJ, Hirvonen JT, Santos HA. Dual-drug delivery by porous silicon nanoparticles for improved cellular uptake, sustained release, and combination therapy. Acta Biomater 2015; 16:206-14. [PMID: 25637067 DOI: 10.1016/j.actbio.2015.01.021] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 01/12/2015] [Accepted: 01/16/2015] [Indexed: 01/28/2023]
Abstract
Dual-drug delivery of antiangiogenic and chemotherapeutic drugs can enhance the therapeutic effect for cancer therapy. Conjugation of methotrexate (MTX) to porous silicon (PSi) nanoparticles (MTX-PSi) with positively charged surface can improve the cellular uptake of MTX and inhibit the proliferation of cancer cells. Herein, MTX-PSi conjugates sustained the release of MTX up to 96 h, and the released fragments including MTX were confirmed by mass spectrometry. The intracellular distribution of the MTX-PSi nanoparticles was confirmed by transmission electron microscopy. Compared to pure MTX, the MTX-PSi achieved similar inhibition of cell proliferation in folate receptor (FR) over-expressing U87 MG cancer cells, and a higher effect in low FR-expressing EA.hy926 cells. Nuclear fragmentation analysis demonstrated programmed cell apoptosis of MTX-PSi in the high/low FR-expressing cancer cells, whereas PSi alone at the same dose had a minor effect on cell apoptosis. Finally, the porous structure of MTX-PSi enabled a successful concomitant loading of another anti-angiogenic hydrophobic drug, sorafenib, and considerably enhanced the dissolution rate of sorafenib. Overall, the MTX-PSi nanoparticles can be used as a platform for combination chemotherapy by simultaneously enhancing the dissolution rate of a hydrophobic drug and sustaining the release of a conjugated chemotherapeutic drug.
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Affiliation(s)
- Chang-Fang Wang
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Ermei M Mäkilä
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland; Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Martti H Kaasalainen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Marja V Hagström
- Centre for Drug Research, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Jarno J Salonen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Jouni T Hirvonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Hélder A Santos
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland.
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44
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Systematic in vitro and in vivo study on porous silicon to improve the oral bioavailability of celecoxib. Biomaterials 2015; 52:44-55. [PMID: 25818412 DOI: 10.1016/j.biomaterials.2015.02.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 01/29/2015] [Accepted: 02/01/2015] [Indexed: 01/08/2023]
Abstract
Mesoporous materials are promising candidates for improving dissolution rate of poorly water-soluble drugs in vitro and their bioavailability in vivo. In the present study, sixteen batches of celecoxib-loaded PSi particles with pore sizes ranging from 17 to 58 nm and celecoxib content from 5 to 36 w-% were prepared and a detailed physicochemical characterization of the drug was performed by several methods. Interaction between co-culture of Caco-2/HT29-MTX cells and unloaded PSi particles was tested in toxicity assays, and increased toxicity for particles with large pore size was observed. Dissolution rate of celecoxib was improved in vitro by lowering the drug loading degree which hindered the recrystallization of celecoxib on the external surface of the particles. The fastest permeation of loaded celecoxib through the co-culture monolayer as well as the highest bioavailability in rats was observed with the particles with small pore size and low loading degree. New insights were obtained on how various parameters of the mesoporous delivery system affect the state of the drug inside the pores and its release in vitro and in vivo.
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45
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Kaasalainen M, Rytkönen J, Mäkilä E, Närvänen A, Salonen J. Electrostatic interaction on loading of therapeutic peptide GLP-1 into porous silicon nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1722-9. [PMID: 25604519 DOI: 10.1021/la5047047] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Porous silicon (PSi) nanoparticles' tunable properties are facilitating their use at highly challenging medical tasks such as peptide delivery. Because of many different mechanisms that are affecting the interaction between the peptide and the particle, the drug incorporation into the mesoporous delivery system is not straightforward. We have studied the adsorption and loading of incretin hormone glucagon like peptide 1 (GLP-1) on PSi nanoparticles. The results show that the highest loading degree can be achieved in pH values near the isoelectric point of peptide, and the phenomenon is independent of the surface's zeta potential. In order to study the interaction between the peptide and the nanoparticle, we studied the adsorption with lower concentrations and noticed that also non-Coulombic forces have a big role in adsorption of GLP-1. Adsorption is effective and pH-independent especially on low peptide concentrations and onto more hydrophobic nanoparticles. Reversibility of adsorption was studied as a function of buffer pH. When the loading is compared to the total mass of the formulation, the loading degree is 29%, and during desorption experiments 25% is released in 4 h and can be considered as a reversible loading degree. Thus, the peptides adsorbed first seem to create irreversibly adsorbed layer that facilitates reversible adsorption of following peptides.
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Affiliation(s)
- Martti Kaasalainen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku , FI-20014 Turku, Finland
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46
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Wang CF, Mäkilä EM, Bonduelle C, Rytkönen J, Raula J, Almeida S, Närvänen A, Salonen JJ, Lecommandoux S, Hirvonen JT, Santos HA. Functionalization of alkyne-terminated thermally hydrocarbonized porous silicon nanoparticles with targeting peptides and antifouling polymers: effect on the human plasma protein adsorption. ACS APPLIED MATERIALS & INTERFACES 2015; 7:2006-2015. [PMID: 25539741 DOI: 10.1021/am507827n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Porous silicon (PSi) nanomaterials combine a high drug loading capacity and tunable surface chemistry with various surface modifications to meet the requirements for biomedical applications. In this work, alkyne-terminated thermally hydrocarbonized porous silicon (THCPSi) nanoparticles were fabricated and postmodified using five bioactive molecules (targeting peptides and antifouling polymers) via a single-step click chemistry to modulate the bioactivity of the THCPSi nanoparticles, such as enhancing the cellular uptake and reducing the plasma protein association. The size of the nanoparticles after modification was increased from 176 to 180-220 nm. Dextran 40 kDa modified THCPSi nanoparticles showed the highest stability in aqueous buffer. Both peptide- and polymer-functionalized THCPSi nanoparticles showed an extensive cellular uptake which was dependent on the functionalized moieties presented on the surface of the nanoparticles. The plasma protein adsorption study showed that the surface modification with different peptides or polymers induced different protein association profiles. Dextran 40 kDa functionalized THCPSi nanoparticles presented the least protein association. Overall, these results demonstrate that the "click" conjugation of the biomolecules onto the alkyne-terminated THCPSi nanoparticles is a versatile and simple approach to modulate the surface chemistry, which has high potential for biomedical applications.
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Affiliation(s)
- Chang-Fang Wang
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki , FI-00014 Helsinki, Finland
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47
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McInnes SJP, Lowe RD. Biomedical Uses of Porous Silicon. ELECTROCHEMICALLY ENGINEERED NANOPOROUS MATERIALS 2015. [DOI: 10.1007/978-3-319-20346-1_5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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48
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Santos HA, Bimbo LM, Peltonen L, Hirvonen J. Inorganic Nanoparticles in Targeted Drug Delivery and Imaging. ADVANCES IN DELIVERY SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1007/978-3-319-11355-5_18] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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49
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Liu D, Zhang H, Mäkilä E, Fan J, Herranz-Blanco B, Wang CF, Rosa R, Ribeiro AJ, Salonen J, Hirvonen J, Santos HA. Microfluidic assisted one-step fabrication of porous silicon@acetalated dextran nanocomposites for precisely controlled combination chemotherapy. Biomaterials 2015; 39:249-59. [DOI: 10.1016/j.biomaterials.2014.10.079] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/23/2014] [Accepted: 10/30/2014] [Indexed: 12/11/2022]
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50
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Sun P, Liu G, Lv D, Dong X, Wu J, Wang D. Effective activation of halloysite nanotubes by piranha solution for amine modification via silane coupling chemistry. RSC Adv 2015. [DOI: 10.1039/c5ra04444h] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Piranha solution is shown to be an effective agent in activating the surface of HNTs for silanization modification.
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Affiliation(s)
- Pan Sun
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Guoming Liu
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Dong Lv
- Department of Mechanical and Aerospace Engineering
- The Hong Kong University of Science and Technology
- China
| | - Xia Dong
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Jingshen Wu
- Department of Mechanical and Aerospace Engineering
- The Hong Kong University of Science and Technology
- China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Engineering Plastics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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