1
|
Hua K, Rocha I, Zhang P, Gustafsson S, Ning Y, Strømme M, Mihranyan A, Ferraz N. Transition from Bioinert to Bioactive Material by Tailoring the Biological Cell Response to Carboxylated Nanocellulose. Biomacromolecules 2016; 17:1224-33. [PMID: 26886265 DOI: 10.1021/acs.biomac.6b00053] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work presents an insight into the relationship between cell response and physicochemical properties of Cladophora cellulose (CC) by investigating the effect of CC functional group density on the response of model cell lines. CC was carboxylated by electrochemical TEMPO-mediated oxidation. By varying the amount of charge passed through the electrolysis setup, CC materials with different degrees of oxidation were obtained. The effect of carboxyl group density on the material's physicochemical properties was investigated together with the response of human dermal fibroblasts (hDF) and human osteoblastic cells (Saos-2) to the carboxylated CC films. The introduction of carboxyl groups resulted in CC films with decreased specific surface area and smaller total pore volume compared with the unmodified CC (u-CC). While u-CC films presented a porous network of randomly oriented fibers, a compact and aligned fiber pattern was depicted for the carboxylated-CC films. The decrease in surface area and total pore volume, and the orientation and aggregation of the fibers tended to augment parallel to the increase in the carboxyl group density. hDF and Saos-2 cells presented poor cell adhesion and spreading on u-CC, which gradually increased for the carboxylated CC as the degree of oxidation increased. It was found that a threshold value in carboxyl group density needs be reached to obtain a carboxylated-CC film with cytocompatibility comparable to commercial tissue culture material. Hence, this study demonstrates that a normally bioinert nanomaterial can be rendered bioactive by carefully tuning the density of charged groups on the material surface, a finding that not only may contribute to the fundamental understanding of biointerface phenomena, but also to the development of bioinert/bioactive materials.
Collapse
Affiliation(s)
- Kai Hua
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden
| | - Igor Rocha
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden.,CAPES Foundation, Ministry of Education of Brazil, Brasília - DF 70040-020, Brazil
| | - Peng Zhang
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden
| | - Simon Gustafsson
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden
| | - Yi Ning
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden
| | - Maria Strømme
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden
| | - Albert Mihranyan
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden
| | - Natalia Ferraz
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University , Box 534, 75121, Uppsala, Sweden
| |
Collapse
|
2
|
Quellmalz A, Mihranyan A. Citric Acid Cross-Linked Nanocellulose-Based Paper for Size-Exclusion Nanofiltration. ACS Biomater Sci Eng 2015; 1:271-276. [PMID: 33435050 DOI: 10.1021/ab500161x] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This article explores the effect of cross-linking of nanocellulose with citric acid for the development of novel paper filters for potential application within nanofiltration, including sterile (virus) filtration. Cladophora cellulose paper sheets were cross-linked by first soaking in 16 wt % citric acid in the presence of 1 wt % sodium hypophosphate overnight and then curing at 160 °C for 10 min in a hot-press. The cross-linked paper filter samples were then characterized with FTIR, AFM, N2 gas adsorption, and tensile strength analysis (dry and wet strength). The particle retention properties were further studied with respect to filtering of 20 nm Au nanoparticles with SEM and comparing the UV absorbance intensity of the starting solution and the filtrate. The wet strength of the paper filter was greatly improved following the cross-linking, although in the dry state, the paper becomes brittle. The improved wet strength of the paper filter enables increasing the pressure gradient applied for filtration without compromising the integrity of the filter. This is the first report in which a fully nature-derived paper filter is capable of removing tracer particles as small as 20 nm. It is concluded that citric acid cross-linking of nanocellulose is beneficial for developing paper based sterile (virus) removal industrial filters.
Collapse
Affiliation(s)
- Arne Quellmalz
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University, Box 534, 75121 Uppsala, Sweden
| | - Albert Mihranyan
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University, Box 534, 75121 Uppsala, Sweden
| |
Collapse
|
3
|
Metreveli G, Wågberg L, Emmoth E, Belák S, Strømme M, Mihranyan A. A size-exclusion nanocellulose filter paper for virus removal. Adv Healthc Mater 2014; 3:1546-50, 1524. [PMID: 24687994 DOI: 10.1002/adhm.201300641] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 01/17/2014] [Indexed: 11/05/2022]
Abstract
This is the first time a 100% natural, unmodified nanofibrous polymer-based membrane is demonstrated capable of removing viruses solely based on the size-exclusion principle, with a log10 reduction value (LRV) ≥ 6.3 as limited by the assay lower detection limit and the feed virus titre, thereby matching the performance of industrial synthetic polymer virus removal filters.
Collapse
Affiliation(s)
- Giorgi Metreveli
- Department of Biomedical Sciences and Veterinary Public Health Swedish University of Agricultural Sciences Box 7036 750 07 Uppsala Sweden
| | - Linus Wågberg
- Nanotechnology and Functional Materials Department of Engineering Sciences Box 534, Uppsala University 75121 Uppsala Sweden
| | - Eva Emmoth
- Unit of Virology Immunobiology and Parasitology The National Veterinary Institute (SVA) 751 89 Uppsala Sweden
| | - Sándor Belák
- Unit of Virology Immunobiology and Parasitology The National Veterinary Institute (SVA) 751 89 Uppsala Sweden
| | - Maria Strømme
- Nanotechnology and Functional Materials Department of Engineering Sciences Box 534, Uppsala University 75121 Uppsala Sweden
| | - Albert Mihranyan
- Division of Materials Science Luleå University of Technology 971 87 Luleå Sweden
- Nanotechnology and Functional Materials Department of Engineering Sciences Box 534, Uppsala University 75121 Uppsala Sweden
| |
Collapse
|
4
|
Ferraz N, Mihranyan A. Is there a future for electrochemically assisted hemodialysis? Focus on the application of polypyrrole–nanocellulose composites. Nanomedicine (Lond) 2014; 9:1095-110. [DOI: 10.2217/nnm.14.49] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
This work summarizes the various aspects of using electrochemically assisted solute removal techniques in hemodialysis with a focus on blood electrodialysis and electrochemically controlled uremic retention solute removal using polypyrrole. In particular, the feasibility of using highly porous conductive polypyrrole–Cladophora cellulose membranes for hemodialysis are overviewed as a part of our dedicated research efforts during the past 4 years. The potential benefits and the current limitations associated with using the electrochemically controlled uremic retention solute removal techniques are discussed in detail.
Collapse
Affiliation(s)
- Natalia Ferraz
- Nanotechnology & Functional Materials, Department of Engineering Sciences, Box 534, Uppsala University, 75121 Uppsala, Sweden
| | - Albert Mihranyan
- Nanotechnology & Functional Materials, Department of Engineering Sciences, Box 534, Uppsala University, 75121 Uppsala, Sweden
- Division of Materials Science, Luleå University of Technology, 97187 Luleå, Sweden
| |
Collapse
|
5
|
Carlsson DO, Sjödin M, Nyholm L, Strømme M. A Comparative Study of the Effects of Rinsing and Aging of Polypyrrole/Nanocellulose Composites on Their Electrochemical Properties. J Phys Chem B 2013; 117:3900-10. [DOI: 10.1021/jp3125582] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel O. Carlsson
- Department of Engineering
Sciences, Division of Nanotechnology and Functional Materials,
The Ångström Laboratory, Uppsala University, Box 534, 751 21 Uppsala, Sweden
| | - Martin Sjödin
- Department of Engineering
Sciences, Division of Nanotechnology and Functional Materials,
The Ångström Laboratory, Uppsala University, Box 534, 751 21 Uppsala, Sweden
| | - Leif Nyholm
- Department of Chemistry
Ångström, The Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Maria Strømme
- Department of Engineering
Sciences, Division of Nanotechnology and Functional Materials,
The Ångström Laboratory, Uppsala University, Box 534, 751 21 Uppsala, Sweden
| |
Collapse
|