1
|
Yadav Schmid S, Ma X, Hammons JA, Mergelsberg ST, Harris BS, Ferron T, Yang W, Zhou W, Zheng R, Zhang S, Legg BA, Van Buuren A, Baer MD, Chen CL, Tao J, De Yoreo JJ. Influence of Peptoid Sequence on the Mechanisms and Kinetics of 2D Assembly. ACS NANO 2024; 18:3497-3508. [PMID: 38215492 PMCID: PMC10832064 DOI: 10.1021/acsnano.3c10810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/29/2023] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
Two-dimensional (2D) materials have attracted intense interest due to their potential for applications in fields ranging from chemical sensing to catalysis, energy storage, and biomedicine. Recently, peptoids, a class of biomimetic sequence-defined polymers, have been found to self-assemble into 2D crystalline sheets that exhibit unusual properties, such as high chemical stability and the ability to self-repair. The structure of a peptoid is close to that of a peptide except that the side chains are appended to the amide nitrogen rather than the α carbon. In this study, we investigated the effect of peptoid sequence on the mechanism and kinetics of 2D assembly on mica surfaces using in situ AFM and time-resolved X-ray scattering. We explored three distinct peptoid sequences that are amphiphilic in nature with hydrophobic and hydrophilic blocks and are known to self-assemble into 2D sheets. The results show that their assembly on mica starts with deposition of aggregates that spread to establish 2D islands, which then grow by attachment of peptoids, either monomers or unresolvable small oligomers, following well-known laws of crystal step advancement. Extraction of the solubility and kinetic coefficient from the dependence of the growth rate on peptoid concentration reveals striking differences between the sequences. The sequence with the slowest growth rate in bulk and with the highest solubility shows almost no detachment; i.e., once a growth unit attaches to the island edge, there is almost no probability of detaching. Furthermore, a peptoid sequence with a hydrophobic tail conjugated to the final carboxyl residue in the hydrophilic block has enhanced hydrophobic interactions and exhibits rapid assembly both in the bulk and on mica. These assembly outcomes suggest that, while the π-π interactions between adjacent hydrophobic blocks play a major role in peptoid assembly, sequence details, particularly the location of charged groups, as well as interaction with the underlying substrate can significantly alter the thermodynamic stability and assembly kinetics.
Collapse
Affiliation(s)
- Sakshi Yadav Schmid
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
- Department
of Materials Science and Engineering, University
of Washington, Seattle, Washington 98195, United States
| | - Xiang Ma
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Joshua A. Hammons
- Physical
and Life Sciences Directorate, Lawrence
Livermore National Laboratory, Livermore, California 94550, United States
| | - Sebastian T. Mergelsberg
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Bradley S. Harris
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Thomas Ferron
- Physical
and Life Sciences Directorate, Lawrence
Livermore National Laboratory, Livermore, California 94550, United States
| | - Wenchao Yang
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Wenhao Zhou
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
- Department
of Materials Science and Engineering, University
of Washington, Seattle, Washington 98195, United States
| | - Renyu Zheng
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
- Department
of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Shuai Zhang
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
- Department
of Materials Science and Engineering, University
of Washington, Seattle, Washington 98195, United States
| | - Benjamin Adam Legg
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Anthony Van Buuren
- Physical
and Life Sciences Directorate, Lawrence
Livermore National Laboratory, Livermore, California 94550, United States
| | - Marcel D. Baer
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - Chun-Long Chen
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
- Department
of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Jinhui Tao
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
| | - James J. De Yoreo
- Physical
Sciences Division, Pacific Northwest National
Laboratory, Richland, Washington 99352, United States
- Department
of Materials Science and Engineering, University
of Washington, Seattle, Washington 98195, United States
| |
Collapse
|
2
|
Larrañaga A, Bello-Álvarez C, Lizundia E. Cytotoxicity and Inflammatory Effects of Chitin Nanofibrils Isolated from Fungi. Biomacromolecules 2023; 24:5737-5748. [PMID: 37988418 PMCID: PMC10716858 DOI: 10.1021/acs.biomac.3c00710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 11/23/2023]
Abstract
Fungal nanochitin can assist the transition from the linear fossil-based economy to a circular biobased economy given its environmental benefits over conventional crustacean-nanochitin. Its real-world implementation requires carefully assessing its toxicity so that unwanted human health and environmental issues are avoided. Accordingly, the cytotoxicity and inflammatory effects of chitin nanofibrils (ChNFs) from white mushroom is assessed. ChNFs are few nanometers in diameter, with a 75.8% N-acetylation degree, a crystallinity of 59.1%, and present a 44:56 chitin/glucan weight ratio. Studies are conducted for aqueous colloidal ChNF dispersions (0-5 mg·mL-1) and free-standing films having physically entangled ChNFs. Aqueous dispersions of chitin nanocrystals (ChNCs) isolated via hydrochloric acid hydrolysis of α-chitin powder are also evaluated for comparison. Cytotoxicity studies conducted in human fibroblasts (MRC-5 cells) and murine brain microglia (BV-2 cells) reveal a comparatively safer behavior over related biobased nanomaterials. However, a strong inflammatory response was observed when BV-2 cells were cultured in the presence of colloidal ChNFs. These novel cytotoxicity and inflammatory studies shed light on the potential of fungal ChNFs for biomedical applications.
Collapse
Affiliation(s)
- Aitor Larrañaga
- Department
of Mining-Metallurgy Engineering and Materials Science, POLYMAT, Faculty of Engineering in Bilbao. University of the
Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo 1, 48013 Bilbao, Biscay, Spain
| | - Carlos Bello-Álvarez
- Department
of Mining-Metallurgy Engineering and Materials Science, POLYMAT, Faculty of Engineering in Bilbao. University of the
Basque Country (UPV/EHU), Plaza Ingeniero Torres Quevedo 1, 48013 Bilbao, Biscay, Spain
| | - Erlantz Lizundia
- Life
Cycle Thinking Group, Department of Graphic Design and Engineering
Projects. University of the Basque Country
(UPV/EHU), Plaza Ingeniero
Torres Quevedo 1, 48013 Bilbao, Biscay, Spain
- BCMaterials,
Basque Center for Materials, Applications and Nanostructures, Edif. Martina Casiano, Pl. 3 Parque
Científico UPV/EHU Barrio Sarriena, 48940 Leioa, Biscay, Spain
| |
Collapse
|
3
|
Sinha A, Kummer N, Wu T, De France KJ, Pinotsi D, Thoma JL, Fischer P, Campioni S, Nyström G. Nanocellulose aerogels as 3D amyloid templates. NANOSCALE 2023; 15:17785-17792. [PMID: 37909800 PMCID: PMC10653027 DOI: 10.1039/d3nr02109b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/23/2023] [Indexed: 11/03/2023]
Abstract
Proteins in solution tend to coat solid surfaces upon exposure. Depending on the nature of the surface, the environmental conditions, and the nature of the protein these adsorbed proteins may self-assemble into ordered, fibre-like structures called amyloids. Nanoparticulate surfaces, with their high surface to volume ratio, are particularly favourable to amyloid formation. Most prior research has focussed on either inorganic or organic nanoparticles in solution. In this research, we instead focus on aerogels created from TEMPO-oxidized cellulose nanofibers (TO-CNF) to serve as bio-based, three-dimensional amyloid templates with a tuneable surface chemistry. Previous research on the use of cellulose as a protein adsorption template has shown no evidence of a change in the secondary protein structure. Herein, however, with the aid of the reducing agent TCEP, we were able to induce the formation of amyloid-like 'worms' on the surface of TO-CNF aerogels. Furthermore, we demonstrate that the addition of the TO-CNF aerogel can also induce bulk aggregation under conditions where it previously did not exist. Finally, we show that the addition of the aerogel increases the rate of 'worm' formation in conditions where previous research has found a long lag-phase. Therefore, TO-CNF aerogels are shown to be excellent templates for inducing ordered protein aggregation.
Collapse
Affiliation(s)
- Ashutosh Sinha
- Laboratory for Cellulose and Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
- Institute of Food Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zürich, Switzerland
| | - Nico Kummer
- Laboratory for Cellulose and Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
- Institute of Food Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zürich, Switzerland
| | - Tingting Wu
- Laboratory for Cellulose and Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
| | - Kevin J De France
- Laboratory for Cellulose and Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
| | - Dorothea Pinotsi
- Scientific Centre for Optical and Electron Microscopy, ETH Zurich, 8093, Zurich, Switzerland
| | - Janine L Thoma
- Laboratory for Cellulose and Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
| | - Peter Fischer
- Institute of Food Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zürich, Switzerland
| | - Silvia Campioni
- Laboratory for Cellulose and Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
| | - Gustav Nyström
- Laboratory for Cellulose and Wood Materials, Empa, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
- Institute of Food Nutrition and Health, ETH Zürich, Schmelzbergstrasse 7, 8092 Zürich, Switzerland
| |
Collapse
|
4
|
Lee M, Chun D, Park S, Choi G, Kim Y, Kang SJ, Im SG. Engineering of Surface Energy of Cell-Culture Platform to Enhance the Growth and Differentiation of Dendritic Cells via Vapor-Phase Synthesized Functional Polymer Films. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106648. [PMID: 35297560 DOI: 10.1002/smll.202106648] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Although the dendritic cell (DC)-based modulation of immune responses has emerged as a promising therapeutic strategy for tumors, infections, and autoimmune diseases, basic research and therapeutic applications of DCs are hampered by expensive growth factors and sophisticated culture procedures. Furthermore, the platform to drive the differentiation of a certain DC subset without any additional biochemical manipulations has not yet been developed. Here, five types of polymer films with different hydrophobicity via an initiated chemical vapor deposition (iCVD) process to modulate the interactions related to cell-substrate adhesion are introduced. Especially, poly(cyclohexyl methacrylate) (pCHMA) substantially enhances the expansion and differentiation of conventional type 1 DCs (cDC1s), the prime DC subset for antigen cross-presentation, and CD8+ T cell activation, by 4.8-fold compared to the conventional protocol. The cDC1s generated from the pCHMA-coated plates retain the bona fide DC functions including the expression of co-stimulatory molecules, cytokine secretion, antigen uptake and processing, T cell activation, and induction of antitumor immune responses. To the authors' knowledge, this is the first report highlighting that the modulation of surface hydrophobicity of the culture plate can be an incisive approach to construct an advanced DC culture platform with high efficiency, which potentially facilitates basic research and the development of immunotherapy employing DCs.
Collapse
Affiliation(s)
- Minseok Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Dongmin Chun
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Seonghyeon Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Goro Choi
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Yesol Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Suk-Jo Kang
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
- KAIST Institute For NanoCentury (KINC), Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| |
Collapse
|
5
|
Chingo Aimacaña CM, Quinchiguango Perez DA, Rocha Pinto S, Debut A, Attia MF, Santos-Oliveira R, Whitehead DC, Terencio T, Alexis F, Dahoumane SA. Polytetrafluoroethylene-like Nanoparticles as a Promising Contrast Agent for Dual Modal Ultrasound and X-ray Bioimaging. ACS Biomater Sci Eng 2021; 7:1181-1191. [PMID: 33590748 DOI: 10.1021/acsbiomaterials.0c01635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various noninvasive imaging techniques are used to produce deep-tissue and high-resolution images for biomedical research and clinical purposes. Organic and inorganic bioimaging agents have been developed to enhance the resolution and contrast intensity. This paper describes the synthesis of polytetrafluoroethylene-like nanoparticles (PTFE≈ NPs), their characterization, biological activity, and bioimaging properties. Transmission electron microscopy (TEM) images showed the shape and the size of the as-obtained small and ultrasmall PTFE≈ NPs. Fourier transform infrared spectroscopy (FTIR) confirmed the PTFE-like character of the samples. X-ray diffraction (XRD) enabled the determination of the crystallization system, cell lattice, and index of crystallinity of the material in addition to the presence of titania (TiO2) as the contamination. These findings were corroborated by X-ray photoelectron spectroscopy (XPS) that identifies the chemical states of the elements present in the samples along with their atomic percentages allowing the determination of both the purity index of the sample and the nature of the impurities. Additionally, diffuse reflectance ultraviolet-visible spectroscopy (UV-vis) was used to further assess the optical properties of the materials. Importantly, PTFE≈ NPs showed significant in vitro and in vivo biocompatibility. Lastly, PTFE≈ NPs were tested for their ultrasound and X-ray contrast properties. Our encouraging preliminary results open new avenues for PTFE-like nanomaterials as a suitable multifunctional contrast agent for biomedical imaging applications. Combined with suitable surface chemistry and morphology design, these findings shed light to new opportunities offered by PTFE nanoparticles in the ever-booming biomedical field.
Collapse
Affiliation(s)
| | | | - Suyene Rocha Pinto
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of Novel Radiopharmaceuticals, 21941906 Rio de Janeiro, Brazil.,Zona Oeste State University, Laboratory of Radiopharmacy and Nanoradiopharmaceuticals, 23070200 Rio de Janeiro, Brazil
| | - Alexis Debut
- Center of Nanoscience and Nanotechnology, Universidad de las Fuerzas Armadas ESPE, Sangolquí 170501, Ecuador
| | - Mohamed F Attia
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of Novel Radiopharmaceuticals, 21941906 Rio de Janeiro, Brazil.,Zona Oeste State University, Laboratory of Radiopharmacy and Nanoradiopharmaceuticals, 23070200 Rio de Janeiro, Brazil
| | - Daniel C Whitehead
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Thibault Terencio
- School of Chemical Sciences and Engineering, Yachay Tech University, 100650 Urcuquí, Ecuador
| | - Frank Alexis
- School of Biological Sciences and Engineering, Yachay Tech University, 100650 Urcuquí, Ecuador
| | - Si Amar Dahoumane
- School of Biological Sciences and Engineering, Yachay Tech University, 100650 Urcuquí, Ecuador
| |
Collapse
|
6
|
Xu D, Wang Y, Keerio AA, Ma A. Identification of hydrophobin genes and their physiological functions related to growth and development in Pleurotus ostreatus. Microbiol Res 2021; 247:126723. [PMID: 33636611 DOI: 10.1016/j.micres.2021.126723] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 11/28/2020] [Accepted: 02/08/2021] [Indexed: 01/18/2023]
Abstract
Hydrophobins are small secreted proteins with important physiological functions and potential applications. Here, Pleurotus ostreatus hydrophobin genes were systematically analyzed: they were characterized, classified, and their expression profiles and gene functions were explored. In total, 40 P. ostreatus hydrophobin genes were found and showed genetic diversity, of which 15 were newly identified. The hydrophobin protein sequences were diverse but all contained eight cysteine residues with a conserved spacing pattern, and 33 of them were class I hydrophobins. The expression profile analyses showed that Vmh3 and Hydph20 were abundant in monokaryotic and dikaryotic mycelia, whereas Hydph17, Po.hyd16, Hydph8 were specifically expressed in monokaryotic mycelia and Po.hyd10 were specific in dikaryotic mycelia. Furthermore, Vmh3, Hydph20, Po.hyd7, and Po.hyd10 were abundant when dikaryotic mycelia cultivated on PDA, which are different from on substrate (Vmh2, Vmh3, Hydph7, Po.hyd3, Po.hyd7, Po.hyd9); Hydph12, POH1, and Po.hyd4 can be induced by natural light and cold stimulation during development from mycelia to primordia; Vmh3, FBH1, Hydph12, Po.hyd1-Po.hyd5, and Po.hyd8 were highly expressed in primordia and young fruiting bodies; Hydph12, Po.hyd1, Po.hyd4, and Po.hyd5 were specifically expressed in pilei. In addition, RNAi transformants of FBH1 exhibited slower growth rates and had fewer primordia and fruiting bodies, which suggests FBH1 affects the growth rate and primordia formation of P. ostreatus. Therefore, P. ostreatus hydrophobin genes belong to a large family and are temporally and spatially expressed to meet the developmental needs of mushroom.
Collapse
Affiliation(s)
- Danyun Xu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yuanyuan Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Aafaque Ahmed Keerio
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Aimin Ma
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China; Key Laboratory of Agro-Microbial Resources and Utilization, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, China.
| |
Collapse
|
7
|
Lei T, Qian H, Lei P, Hu Y. The increased oxygen content in tantalum leads to decreased bioactivity and osteogenic ability of tantalum implants. Biomater Sci 2021; 9:1409-1420. [PMID: 33393576 DOI: 10.1039/d0bm01555e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tantalum (Ta) implants fabricated by current processing techniques inevitably contain more or less oxygen impurities due to the extremely high melting point and high affinity of oxygen for Ta. Therefore, in this study we investigated whether oxygen impurities cause any effects on the bioactivity of Ta. EDS analysis demonstrated the surface oxygen content difference among different fabricated Ta samples, and the surface water contact angle (WCA) of Ta with high oxygen content (HO-Ta) was significantly higher than that of Ta with medium (MO-Ta) and low (LO-Ta) oxygen content. The in vitro cellular experiments showed that MC3T3-E1 cells on Ta with lower oxygen content exhibited better adhesion, growth, morphological development and in vitro osteogenic ability. Similarly, the in vivo animal experiments indicated the better bone regeneration and ingrowth performances of Ta with lower oxygen content. In addition, the highest ROS production was detected in the HO-Ta group, while the lowest in the LO-Ta group. This study suggests that the oxygen content within Ta, which occurs unavoidably due to technical limitations, negatively affects the bioactivity of Ta in a dose-dependent manner, indicating the need to develop techniques to produce orthopedic all-Ta implants.
Collapse
Affiliation(s)
- Ting Lei
- Department of Orthopeadic Surgery, Xiangya Hospital Central South University, China.
| | | | | | | |
Collapse
|
8
|
Sreeja S, Muraleedharan C, Varma PH, Sailaja G. Surface-transformed osteoinductive polyethylene terephthalate scaffold as a dual system for bone tissue regeneration with localized antibiotic delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 109:110491. [DOI: 10.1016/j.msec.2019.110491] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/23/2019] [Accepted: 11/24/2019] [Indexed: 02/07/2023]
|
9
|
Fungal Hydrophobins and Their Self-Assembly into Functional Nanomaterials. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1174:161-185. [DOI: 10.1007/978-981-13-9791-2_5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
10
|
Jiang L, Gao J, Song D, Qiao M, Tang D, Chen S, Shi J, Kong D, Wang S. An electrospun poly(ε-caprolactone) scaffold modified with matrix metalloproteinase for cellularization and vascularization. J Mater Chem B 2018; 6:2795-2802. [PMID: 32254232 DOI: 10.1039/c7tb02879b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Rapid in vivo cellularization of implanted grafts is crucial to tissue regeneration in tissue engineering. The compositions and structures of the extracellular matrix (ECM) are important in regulating cell attachment, proliferation and migration. ECM remodeling, especially degradation, is closely related to cell migration under physiological and pathological conditions. Matrix metalloproteinases-1 (MMP-1, Collagenase I) could degrade collagen I in the ECM. So we put forward the hypothesis that ECM degradation regulated by MMP-1 might facilitate rapid cellularization in tissue engineering. In the cell invasion test, collagenase of certain concentration (0.01 mg mL-1) could significantly promote the migration of smooth muscle cells (SMCs). Then electrospun poly(ε-caprolactone) (PCL) grafts were modified with collagenase through immobilization by hydrophobin (HFBI). Surface characterization of the material confirmed the successful immobilization of collagenase. The ingrowth of SMCs into the collagenase-modified membrane was more than that into the untreated membrane. Results of subcutaneous implantation in rats indicated that the modified graft was beneficial for vascularization by promoting capillary formation. The results showed that the collagenase modified grafts could enhance SMC migration and this strategy may be a promising and attractive method for cellularization and vascularization in tissue engineering.
Collapse
Affiliation(s)
- Li Jiang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials for Ministry of Education, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Xiao Y, Zhang Q, Wang Y, Wang B, Sun F, Han Z, Feng Y, Yang H, Meng S, Wang Z. Dual-functional protein for one-step production of a soluble and targeted fluorescent dye. Theranostics 2018; 8:3111-3125. [PMID: 29896306 PMCID: PMC5996361 DOI: 10.7150/thno.24613] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 03/17/2018] [Indexed: 01/17/2023] Open
Abstract
Low water solubility and poor selectivity are two fundamental limitations that compromise applications of near-infrared (NIR) fluorescent probes. Methods: Here, a simple strategy that can resolve these problems simultaneously was developed by using a novel hybrid protein named RGD-HFBI that is produced by fusion of hydrophobin HFBI and arginine-glycine-aspartic acid (RGD) peptide. This unique hybrid protein inherits self-assembly and targeting functions from HFBI and RGD peptide respectively. Results: Boron-dipyrromethene (BODIPY) used as a model NIR dye can be efficiently dispersed in the RGD-HFBI solution by simple mixing and sonication for 30 min. The data shows that self-assembled RGD-HFBI forms a protein nanocage by using the BODIPY as the assembly template. Cell uptake assay proves that RGD-HFBI/BODIPY can efficiently stain αvβ3 integrin-positive cancer cells. Finally, in vivo affinity tests fully demonstrate that the soluble RGD-HFBI/BODIPY complex selectively targets and labels tumor sites of tumor-bearing mice due to the high selectivity of the RGD peptide. Conclusion: Our one-step strategy using dual-functional RGD-HFBI opens a novel route to generate soluble and targeted NIR fluorescent dyes in a very simple and efficient way and may be developed as a general strategy to broaden their applications.
Collapse
Affiliation(s)
- Yunjie Xiao
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Qian Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yanyan Wang
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Bin Wang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Fengnan Sun
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Ziyu Han
- College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Yaqing Feng
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Haitao Yang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
- Tianjin International Joint Academy of Biotechnology and Medicine, Tianjin 300457, China
| | - Shuxian Meng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Zefang Wang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| |
Collapse
|
12
|
Applications of Functional Amyloids from Fungi: Surface Modification by Class I Hydrophobins. Biomolecules 2017; 7:biom7030045. [PMID: 28672843 PMCID: PMC5618226 DOI: 10.3390/biom7030045] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/20/2017] [Accepted: 06/22/2017] [Indexed: 12/20/2022] Open
Abstract
Class I hydrophobins produced from fungi are amongst the first proteins recognized as functional amyloids. They are amphiphilic proteins involved in the formation of aerial structures such as spores or fruiting bodies. They form chemically robust layers which can only be dissolved in strong acids. These layers adhere to different surfaces, changing their wettability, and allow the binding of other proteins. Herein, the modification of diverse types of surfaces with Class I hydrophobins is reported, highlighting the applications of the coated surfaces. Indeed, these coatings can be exploited in several fields, spanning from biomedical to industrial applications, which include biosensing and textile manufacturing.
Collapse
|
13
|
Przylucka A, Akcapinar GB, Chenthamara K, Cai F, Grujic M, Karpenko J, Livoi M, Shen Q, Kubicek CP, Druzhinina IS. HFB7 - A novel orphan hydrophobin of the Harzianum and Virens clades of Trichoderma, is involved in response to biotic and abiotic stresses. Fungal Genet Biol 2017; 102:63-76. [PMID: 28089933 DOI: 10.1016/j.fgb.2017.01.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 12/22/2016] [Accepted: 01/03/2017] [Indexed: 11/15/2022]
Abstract
Hydrophobins are small secreted cysteine-rich proteins exclusively found in fungi. They are able to self-assemble in single molecular layers at hydrophobic-hydrophilic interfaces and can therefore be directly involved in establishment of fungi in their habitat. The genomes of filamentous mycotrophic fungi Trichoderma encode a rich diversity of hydrophobins, which are divided in several groups based on their structure and evolution. Here we describe a new member of class II hydrophobins, HFB7, that has a taxonomically restricted occurrence in Harzianum and Virens clades of Trichoderma. Evolutionary analysis reveals that HFB7 proteins form a separate clade distinct from other Trichoderma class II hydrophobins and that genes encoding them evolve under positive selection pressure. Homology modelling of HFB7 structure in comparison to T. reesei HFB2 reveals that the two large hydrophobic patches on the surface of the protein are remarkably conserved between the two hydrophobins despite significant difference in their primary structures. Expression of hfb7 gene in T. virens increases at interactions with other fungi and a plant and in response to a diversity of abiotic stress conditions, and is also upregulated during formation of aerial mycelium in a standing liquid culture. This upregulation significantly exceeds that of expression of hfb7 under a strong constitutive promoter, and T. virens strains overexpressing hfb7 thus display only changes in traits characterized by low hfb7 expression, i.e. faster growth in submerged liquid culture. The hfb7 gene is not expressed in conidia. Our data allow to conclude that this protein is involved in defence of Trichoderma against a diversity of stress factors related to the oxidative stress. Moreover, HFB7 likely helps in the establishment of the fungus in wetlands or other conditions related to high humidity.
Collapse
Affiliation(s)
- Agnes Przylucka
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria; Austrian Center of Industrial Biotechnology, Graz, Austria
| | - Gunseli Bayram Akcapinar
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria
| | - Komal Chenthamara
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria
| | - Feng Cai
- Jiangsu Key Lab for Organic Waste Utilization and National Engineering Research Center for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, China
| | - Marica Grujic
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria
| | - Juriy Karpenko
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria
| | - Miriam Livoi
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria; Austrian Center of Industrial Biotechnology, Graz, Austria
| | - Qirong Shen
- Jiangsu Key Lab for Organic Waste Utilization and National Engineering Research Center for Organic-based Fertilizers, Nanjing Agricultural University, Nanjing, China
| | - Christian P Kubicek
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria
| | - Irina S Druzhinina
- Microbiology Group, Research Area Biochemical Technology, Institute of Chemical and Biological Engineering, TU Wien, Vienna, Austria; Austrian Center of Industrial Biotechnology, Graz, Austria.
| |
Collapse
|
14
|
Gazzera L, Milani R, Pirrie L, Schmutz M, Blanck C, Resnati G, Metrangolo P, Krafft MP. Design of Highly Stable Echogenic Microbubbles through Controlled Assembly of Their Hydrophobin Shell. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603706] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lara Gazzera
- NFMLab; Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Roberto Milani
- VTT-Technical Research Centre of Finland Ltd; Biologinkuja 7 Espoo 02044 VTT Finland
| | - Lisa Pirrie
- VTT-Technical Research Centre of Finland Ltd; Biologinkuja 7 Espoo 02044 VTT Finland
| | - Marc Schmutz
- Institut Charles Sadron (CNRS); University of Strasbourg; 23 rue du Loess 67034 Strasbourg France
| | - Christian Blanck
- Institut Charles Sadron (CNRS); University of Strasbourg; 23 rue du Loess 67034 Strasbourg France
| | - Giuseppe Resnati
- NFMLab; Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Pierangelo Metrangolo
- NFMLab; Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
- VTT-Technical Research Centre of Finland Ltd; Biologinkuja 7 Espoo 02044 VTT Finland
| | - Marie Pierre Krafft
- Institut Charles Sadron (CNRS); University of Strasbourg; 23 rue du Loess 67034 Strasbourg France
| |
Collapse
|
15
|
Gazzera L, Milani R, Pirrie L, Schmutz M, Blanck C, Resnati G, Metrangolo P, Krafft MP. Design of Highly Stable Echogenic Microbubbles through Controlled Assembly of Their Hydrophobin Shell. Angew Chem Int Ed Engl 2016; 55:10263-7. [DOI: 10.1002/anie.201603706] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 05/19/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Lara Gazzera
- NFMLab; Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Roberto Milani
- VTT-Technical Research Centre of Finland Ltd; Biologinkuja 7 Espoo 02044 VTT Finland
| | - Lisa Pirrie
- VTT-Technical Research Centre of Finland Ltd; Biologinkuja 7 Espoo 02044 VTT Finland
| | - Marc Schmutz
- Institut Charles Sadron (CNRS); University of Strasbourg; 23 rue du Loess 67034 Strasbourg France
| | - Christian Blanck
- Institut Charles Sadron (CNRS); University of Strasbourg; 23 rue du Loess 67034 Strasbourg France
| | - Giuseppe Resnati
- NFMLab; Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Pierangelo Metrangolo
- NFMLab; Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
- VTT-Technical Research Centre of Finland Ltd; Biologinkuja 7 Espoo 02044 VTT Finland
| | - Marie Pierre Krafft
- Institut Charles Sadron (CNRS); University of Strasbourg; 23 rue du Loess 67034 Strasbourg France
| |
Collapse
|
16
|
Chen CL, Zuckermann RN, DeYoreo JJ. Surface-Directed Assembly of Sequence-Defined Synthetic Polymers into Networks of Hexagonally Patterned Nanoribbons with Controlled Functionalities. ACS NANO 2016; 10:5314-5320. [PMID: 27136277 DOI: 10.1021/acsnano.6b01333] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The exquisite self-assembly of proteins and peptides in nature into highly ordered functional materials has inspired innovative approaches to the design and synthesis of biomimetic materials. While sequence-defined polymers hold great promise to mimic proteins and peptides for functions, controlled assembly of them on surfaces still remains underdeveloped. Here, we report the assembly of 12-mer peptoids containing alternating acidic and aromatic monomers into networks of hexagonally patterned nanoribbons on mica surfaces. Ca(2+)-carboxylate coordination creates peptoid-peptoid and peptoid-mica interactions that control self-assembly. In situ atomic force microscopy (AFM) shows that peptoids first assemble into discrete nanoparticles; these particles then transform into hexagonally patterned nanoribbons on mica surfaces. AFM-based dynamic force spectroscopy studies show that peptoid-mica interactions are much stronger than peptoid-peptoid interactions, illuminating the driving forces for mica-directed peptoid assembly. We further demonstrate the display of functional domains at the N-terminus of assembling peptoids to produce extended networks with similar hierarchical structures. This research demonstrates that surface-directed peptoid assembly can be used as a robust platform to develop biomimetic coating materials for applications.
Collapse
Affiliation(s)
- Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory , Richland, Washington 99352, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Ronald N Zuckermann
- Molecular Foundry, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - James J DeYoreo
- Physical Sciences Division, Pacific Northwest National Laboratory , Richland, Washington 99352, United States
- Molecular Foundry, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
- Departments of Materials Science and Engineering and of Chemistry, University of Washington , Seattle, Washington 98195, United States
| |
Collapse
|
17
|
Abstract
Fungal hydrophobin is a family of low molecular weight proteins consisting of four disulfide bridges and an extraordinary hydrophobic patch. The hydrophobic patch of hydrophobins and the molecules of gaseous CO2 may interact together and form the stable CO2-nanobubbles covered by an elastic membrane in carbonated beverages. The nanobubbles provide the required energy to provoke primary gushing. Due to the hydrophobicity of hydrophobin, this protein is used as a biosurfactant, foaming agent or encapsulating agent in food products and medicine formulations. Increasing demands for using of hydrophobins led to a challenge regarding production and purification of this product. However, the main issue to use hydrophobin in the industry is the regulatory affairs: yet there is no approved legislation for using hydrophobin in food and beverages. To comply with the legislation, establishing a consistent method for obtaining pure hydrophobins is necessary. Currently, few research teams in Europe are focusing on different aspects of hydrophobins. In this paper, an up-to-date collection of highlights from those special groups about the bio-chemical and physicochemical characteristics of hydrophobins have been studied. The recent advances of those groups concerning the production and purification, positive applications and negative function of hydrophobin are also summarised.
Collapse
|
18
|
Hydrophobin-Based Surface Engineering for Sensitive and Robust Quantification of Yeast Pheromones. SENSORS 2016; 16:s16050602. [PMID: 27128920 PMCID: PMC4883293 DOI: 10.3390/s16050602] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 03/31/2016] [Accepted: 04/20/2016] [Indexed: 02/05/2023]
Abstract
Detection and quantification of small peptides, such as yeast pheromones, are often challenging. We developed a highly sensitive and robust affinity-assay for the quantification of the α-factor pheromone of Saccharomyces cerevisiae based on recombinant hydrophobins. These small, amphipathic proteins self-assemble into highly stable monolayers at hydrophilic-hydrophobic interfaces. Upon functionalization of solid supports with a combination of hydrophobins either lacking or exposing the α-factor, pheromone-specific antibodies were bound to the surface. Increasing concentrations of the pheromone competitively detached the antibodies, thus allowing for quantification of the pheromone. By adjusting the percentage of pheromone-exposing hydrophobins, the sensitivity of the assay could be precisely predefined. The assay proved to be highly robust against changes in sample matrix composition. Due to the high stability of hydrophobin layers, the functionalized surfaces could be repeatedly used without affecting the sensitivity. Furthermore, by using an inverse setup, the sensitivity was increased by three orders of magnitude, yielding a novel kind of biosensor for the yeast pheromone with the lowest limit of detection reported so far. This assay was applied to study the pheromone secretion of diverse yeast strains including a whole-cell biosensor strain of Schizosaccharomyces pombe modulating α-factor secretion in response to an environmental signal.
Collapse
|
19
|
Melcher M, Facey SJ, Henkes TM, Subkowski T, Hauer B. Accelerated Nucleation of Hydroxyapatite Using an Engineered Hydrophobin Fusion Protein. Biomacromolecules 2016; 17:1716-26. [PMID: 27010648 DOI: 10.1021/acs.biomac.6b00135] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Calcium phosphate mineralization is of particular interest in dental repair. A biomimetic approach using proteins or peptides is a highly promising way to reconstruct eroded teeth. In this study, the screening of several proteins is described for their binding and nucleating activities toward hydroxyapatite. Out of 27 tested candidates, only two hydrophobin fusion proteins showed binding abilities to hydroxyapatite in a mouthwash formulation and an increased nucleation in artificial saliva. Using a semirational approach, one of the two candidates (DEWA_5), a fusion protein consisting of a truncated section of the Bacillus subtilis synthase YaaD, the Aspergillus nidulans hydrophobin DEWA, and the rationally designed peptide P11-4 described in the literature, could be further engineered toward a faster mineral formation. The variants DEWA_5a (40aaYaaD-SDSDSD-DEWA) and DEWA_5b (40aaYaaD-RDRDRD-DEWA) were able to enhance the nucleation activity without losing the ability to form hydroxyapatite. In the case of variant DEWA_5b, an additional increase in the binding toward hydroxyapatite could be achieved. Especially with the variant DEWA_5a, the protein engineering of the rationally designed peptide sequence resulted in a resemblance of an amino acid motif that is found in nature. The engineered peptide resembles the amino acid motif in dentin phosphoprotein, one of the major proteins involved in dentinogenesis.
Collapse
Affiliation(s)
- Melanie Melcher
- Institute of Technical Biochemistry, University of Stuttgart , Allmandring 31, 70569 Stuttgart, Germany
| | - Sandra J Facey
- Institute of Technical Biochemistry, University of Stuttgart , Allmandring 31, 70569 Stuttgart, Germany
| | - Thorsten M Henkes
- Institute of Technical Biochemistry, University of Stuttgart , Allmandring 31, 70569 Stuttgart, Germany
| | | | - Bernhard Hauer
- Institute of Technical Biochemistry, University of Stuttgart , Allmandring 31, 70569 Stuttgart, Germany
| |
Collapse
|
20
|
Atomistic simulation of hydrophobin HFBII conformation in aqueous and fluorous media and at the water/vacuum interface. J Mol Graph Model 2015; 63:8-14. [PMID: 26606320 DOI: 10.1016/j.jmgm.2015.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 10/05/2015] [Accepted: 11/06/2015] [Indexed: 11/20/2022]
Abstract
Hydrophobins are proteins of interest for numerous applications thanks to their unique conformational and surface properties and their ability to self-assemble at interfaces. Here we report fully atomistic molecular mechanics and molecular dynamics results together with circular dichroism experimental data, aimed to study the conformational properties of the hydrophobin HFBII in a fluorinated solvent in comparison with a water solution and/or at an aqueous/vacuum interface. Both the atomistic simulations and the circular dichroism data show the remarkable structural stability of HFBII at all scales in all these environments, with no significant structural change, although a small cavity is formed in the fluorinated solvent. The combination of theoretical calculations and circular dichroism data can describe in detail the protein conformation and flexibility in different solvents and/or at an interface, and constitutes a first step towards the study of their self-assembly.
Collapse
|
21
|
Arias CJ, Keller TCS, Schlenoff JB. Quasi-Spherical Cell Clusters Induced by a Polyelectrolyte Multilayer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6436-6446. [PMID: 26035629 DOI: 10.1021/acs.langmuir.5b00678] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fibroblasts cultured on polyelectrolyte multilayers, PEMUs, made from poly(diallyldimethylammonium), PDADMA, and poly(styrene sulfonate), PSS, showed a variety of attachment modes, depending on the charge of the last layer and deposition conditions. PEMUs terminated with PDADMA (cationic) were cytotoxic when built in 1.0 M NaCl but cytophilic when built in 0.15 M NaCl. Cells adhered poorly to all PSS-capped (anionic) films. PEMUs built in 0.15 M NaCl but terminated with a layer of PSS in 1.0 M NaCl induced most cells to form spherical clusters after about 48 h of culture. These clusters still interrogated the surface, and when they were replated on control tissue culture plastic, cells emerged with close to 100% viability. Differences between the various surfaces were probed in an effort to identify the mechanism responsible for this unusual behavior, which did not follow accepted correlations between substrate stiffness and cell adhesion. No significant differences in roughness or wetting were observed between cluster-inducing PSS-capped multilayers and those that did not produce clusters. When the surface charge was assayed with radiolabeled ions a strong increase in negative surface charge was revealed. Viewing the multilayer as a zwitterionic solid and comparing its surface charge density to that of a cell membrane yields similarities that suggest a mechanism for preventing protein adhesion to the surface, a necessary step in the integrin-mediated mechanotransduction properties of a cell.
Collapse
Affiliation(s)
- Carlos J Arias
- †Department of Chemistry and Biochemistry and ‡Department of Biological Sciences, The Florida State University, Tallahassee, Florida 32306, United States
| | - Thomas C S Keller
- †Department of Chemistry and Biochemistry and ‡Department of Biological Sciences, The Florida State University, Tallahassee, Florida 32306, United States
| | - Joseph B Schlenoff
- †Department of Chemistry and Biochemistry and ‡Department of Biological Sciences, The Florida State University, Tallahassee, Florida 32306, United States
| |
Collapse
|
22
|
Takahashi T, Tanaka T, Tsushima Y, Muragaki K, Uehara K, Takeuchi S, Maeda H, Yamagata Y, Nakayama M, Yoshimi A, Abe K. Ionic interaction of positive amino acid residues of fungal hydrophobin RolA with acidic amino acid residues of cutinase CutL1. Mol Microbiol 2015; 96:14-27. [DOI: 10.1111/mmi.12915] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2014] [Indexed: 12/01/2022]
Affiliation(s)
- Toru Takahashi
- Microbial Genomics Laboratory; New Industry Creation Hatchery Center; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Takumi Tanaka
- Laboratory of Applied Microbiology; Department of Microbial Biotechnology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Yusei Tsushima
- Laboratory of Applied Microbiology; Department of Microbial Biotechnology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Kimihide Muragaki
- Laboratory of Applied Microbiology; Department of Microbial Biotechnology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Kenji Uehara
- Laboratory of Enzymology; Department of Molecular and Cell Biology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Shunsuke Takeuchi
- Laboratory of Enzymology; Department of Molecular and Cell Biology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Hiroshi Maeda
- Microbial Genomics Laboratory; New Industry Creation Hatchery Center; Tohoku University; Sendai Miyagi 981-8555 Japan
- Department of Applied Molecular Biology and Biochemistry; Tokyo University of Agriculture and Technology; Fuchu Tokyo 183-8509 Japan
| | - Youhei Yamagata
- Microbial Genomics Laboratory; New Industry Creation Hatchery Center; Tohoku University; Sendai Miyagi 981-8555 Japan
- Department of Applied Molecular Biology and Biochemistry; Tokyo University of Agriculture and Technology; Fuchu Tokyo 183-8509 Japan
| | - Mayumi Nakayama
- Microbial Genomics Laboratory; New Industry Creation Hatchery Center; Tohoku University; Sendai Miyagi 981-8555 Japan
- Laboratory of Applied Microbiology; Department of Microbial Biotechnology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Akira Yoshimi
- Microbial Genomics Laboratory; New Industry Creation Hatchery Center; Tohoku University; Sendai Miyagi 981-8555 Japan
- Laboratory of Applied Microbiology; Department of Microbial Biotechnology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| | - Keietsu Abe
- Microbial Genomics Laboratory; New Industry Creation Hatchery Center; Tohoku University; Sendai Miyagi 981-8555 Japan
- Laboratory of Applied Microbiology; Department of Microbial Biotechnology; Graduate School of Agricultural Science; Tohoku University; Sendai Miyagi 981-8555 Japan
| |
Collapse
|
23
|
Applications of hydrophobins: current state and perspectives. Appl Microbiol Biotechnol 2015; 99:1587-97. [PMID: 25564034 DOI: 10.1007/s00253-014-6319-x] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/08/2014] [Accepted: 12/09/2014] [Indexed: 01/07/2023]
Abstract
Hydrophobins are proteins exclusively produced by filamentous fungi. They self-assemble at hydrophilic-hydrophobic interfaces into an amphipathic film. This protein film renders hydrophobic surfaces of gas bubbles, liquids, or solid materials wettable, while hydrophilic surfaces can be turned hydrophobic. These properties, among others, make hydrophobins of interest for medical and technical applications. For instance, hydrophobins can be used to disperse hydrophobic materials; to stabilize foam in food products; and to immobilize enzymes, peptides, antibodies, cells, and anorganic molecules on surfaces. At the same time, they may be used to prevent binding of molecules. Furthermore, hydrophobins have therapeutic value as immunomodulators and can been used to produce recombinant proteins.
Collapse
|
24
|
Lee S, Røn T, Pakkanen KI, Linder M. Hydrophobins as aqueous lubricant additive for a soft sliding contact. Colloids Surf B Biointerfaces 2014; 125:264-9. [PMID: 25466456 DOI: 10.1016/j.colsurfb.2014.10.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/07/2014] [Accepted: 10/22/2014] [Indexed: 11/19/2022]
Abstract
Two type II fungal hydrophobins, HFBI and FpHYD5, have been studied as aqueous lubricant additive at a nonpolar, compliant sliding contact (self-mated poly(dimethylsiloxane) (PDMS) contact) at two different concentrations, 0.1 mg/mL and 1.0 mg/mL. The two hydrophobins are featured as non-glycosylated (HFBI, m.w. ca. 7 kDa) vs glycosylated (FpHYD5, m.w. ca. 10 kDa) proteins. Far UV CD spectra of the two hydrophobins were very similar, suggesting overall structural similarity, but showed a noticeable difference according to the concentration. This is proposed to be related to the formation of multimers at 1.0 mg/mL. Despite 10-fold difference in the bulk concentration, the adsorbed masses of the hydrophobins onto PDMS surface obtained from the two solutions (0.1 and 1.0 mg/mL) were nearly identical, suggesting that a monolayer of the hydrophobins are formed from 0.1 mg/mL solution. PDMS-PDMS sliding interface was effectively lubricated by the hydrophobin solutions, and showed a reduction in the coefficient of friction by as much as ca. two orders of magnitude. Higher concentration solution (1.0 mg/mL) provided a superior lubrication, particularly in low-speed regime, where boundary lubrication characteristic is dominant via 'self-healing' mechanism. FpHYD5 revealed a better lubrication than HFBI presumably due to the presence of glycans and improved hydration of the sliding interface. Two type II hydrophobins function more favorably compared to a synthetic amphiphilic copolymer, PEO-PPO-PEO, with a similar molecular weight. This is ascribed to higher amount of adsorption of the hydrophobins to hydrophobic surfaces from aqueous solution.
Collapse
Affiliation(s)
- Seunghwan Lee
- Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.
| | - Troels Røn
- Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Kirsi I Pakkanen
- Department of Mechanical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Markus Linder
- Technical Research Centre of Finland, VTT Biotechnology, FIN-02044 VTT, Finland; Department of Biotechnology and Chemical Technology, Aalto University, 00076 Aalto, Finland
| |
Collapse
|
25
|
Ren Q, Kwan AH, Sunde M. Two forms and two faces, multiple states and multiple uses: Properties and applications of the self-assembling fungal hydrophobins. Biopolymers 2013; 100:601-12. [DOI: 10.1002/bip.22259] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 04/08/2013] [Indexed: 01/20/2023]
Affiliation(s)
- Qin Ren
- Discipline of Pharmacology, School of Medical Sciences; University of Sydney; New South Wales 2006 Australia
| | - Ann H. Kwan
- School of Molecular Bioscience; University of Sydney; New South Wales 2006 Australia
| | - Margaret Sunde
- Discipline of Pharmacology, School of Medical Sciences; University of Sydney; New South Wales 2006 Australia
| |
Collapse
|
26
|
Zelena K, Takenberg M, Lunkenbein S, Woche SK, Nimtz M, Berger RG. PfaH2: a novel hydrophobin from the ascomycete Paecilomyces farinosus. Biotechnol Appl Biochem 2013; 60:147-54. [PMID: 23600571 DOI: 10.1002/bab.1077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 11/30/2012] [Indexed: 11/08/2022]
Abstract
The pfah2 gene coding for a novel hydrophobin PfaH2 from the ascomycete Paecilomyces farinosus was identified during sequencing of random clones from a cDNA library. The corresponding protein sequence of PfaH2 deduced from the cDNA comprised 134 amino acids (aa). A 16 aa signal sequence preceded the N-terminus of the mature protein. PfaH2 belonged to the class Ia hydrophobins. The protein was isolated using trifluoroacetic acid extraction and purified via SDS-PAGE and high-performance liquid chromatography. The surface activity of the recently described PfaH1 and of PfaH2 was compared by the determination of contact angles (CAs) on glass slides and Teflon tape, and the CA of distilled water droplets was measured on glass slides coated with hydrophobin PfaH1 or PfaH2. Surprisingly, both hydrophobins adsorbed to hydrophilic surfaces and changed their physicochemical properties to a similar quantitative extent, although little aa sequence homology was found.
Collapse
Affiliation(s)
- Katerina Zelena
- Naturwissenschaftliche Fakultät der Leibniz Universität Hannover, Institut für Lebensmittelchemie, Hannover, Germany
| | | | | | | | | | | |
Collapse
|
27
|
Rothbauer M, Küpcü S, Sticker D, Sleytr UB, Ertl P. Exploitation of S-layer anisotropy: pH-dependent nanolayer orientation for cellular micropatterning. ACS NANO 2013; 7:8020-8030. [PMID: 24004386 DOI: 10.1021/nn403198a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have developed a tunable, facile, and reliable cell patterning method using a self-assembled crystalline protein monolayer that, depending on its orientation, can exhibit either cell adhesive (cytophilic) or cell repulsive (cytophobic) surface properties. Our technique exploits, for the first time, the inherent biological anisotropy of the bacterial cell wall protein SbpA capable of interacting with its cytophilic inner side with components of the cell wall, while its outer cytophobic side interacts with the environment. By simply altering the recrystallization protocol from a basic to an acidic condition, the SbpA-protein layer orientation and function can be switched from preventing unspecific protein adsorption and cell adhesion to effectively promote cell attachment, spreading, and proliferation. As a result, the same protein solution can be used to form cell adhesive and repulsive regions over large areas on a single substrate using a simple pH-dependent self-assembly procedure. The reliable establishment of cytophobic and cytophilic SbpA layers allows the generation of well-defined surface patterns that exhibit uniform height (9-10 nm), p4 lattice symmetry with center-to-center spacing of the morphological units of 12 nm, as well as similar surface potential and charge distributions under cell culture conditions. The pH-dependent "orientation switch" of the SbpA protein nanolayer was integrated with micromolding in capillaries (MIMIC) technology to demonstrate its application for cell patterning using a variety of cell lines including epithelial, fibroblast and endothelial cells.
Collapse
Affiliation(s)
- Mario Rothbauer
- Institute for Biophysics, Department of Nanobiotechnology, ‡Institute for Synthetic Bioarchitectures, Department of Nanobiotechnology, †BioSensor Technologies, Austrian Institute of Technology (AIT), University of Natural Resources and Life Science , Muthgasse 11, Vienna 1190, Austria
| | | | | | | | | |
Collapse
|
28
|
Paslay LC, Falgout L, Savin DA, Heinhorst S, Cannon GC, Morgan SE. Kinetics and Control of Self-Assembly of ABH1 Hydrophobin from the Edible White Button Mushroom. Biomacromolecules 2013; 14:2283-93. [DOI: 10.1021/bm400407c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Leo Falgout
- Department of Materials
Science and Engineering, The University of Illinois, Urbana, Illinois 61801, United States
| | | | | | | | | |
Collapse
|
29
|
The antitumor activity of hydrophobin SC3, a fungal protein. Appl Microbiol Biotechnol 2012; 97:4385-92. [PMID: 22846904 DOI: 10.1007/s00253-012-4311-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 07/13/2012] [Accepted: 07/15/2012] [Indexed: 10/28/2022]
Abstract
The use of mushroom extracts has been common practice in traditional medicine for centuries, including the treatment of cancer. Proteins called hydrophobins are very abundant in mushrooms. Here, it was examined whether they have antitumor activity. Hydrophobin SC3 of Schizophyllum commune was injected daily intraperitoneally starting 1 day after tumor induction in two tumor mouse models (sarcoma and melanoma). SC3 reduced the size and weight of the melanoma significantly, but the sarcoma seemed not affected. However, microscopic analysis of the tumors 12 days after induction revealed a strong antitumor effect of SC3 on both tumors. The mitotic activity of the tumor decreased 1.6- (melanoma) to 2.3-fold (sarcoma), while the vital mass decreased 2.3- (melanoma) to 4.3-fold (sarcoma) compared to the control. Treatment did not cause any signs of toxicity. Behavior, animal growth, and weight of organs were similar to animals injected with vehicle, and no histological abnormalities were found in the organs. In vitro cell culture studies revealed no direct cytotoxic effect of SC3 towards sarcoma cells, while cytotoxic activity was observed towards melanoma cells at a high SC3 concentration. Daily treatment with SC3 did not result in detectable levels of anti-SC3 antibodies in the plasma. Instead, a cellular immune response was observed. Incubation of spleen cells with SC3 resulted in a 1.5- to 2.5-fold increase in interleukin-10 and TNF-α mRNA levels. In conclusion, the nontoxic fungal hydrophobin SC3 showed tumor-suppressive activity possibly via immunomodulation and may be of benefit as adjuvant in combination with chemotherapy and radiation.
Collapse
|
30
|
Cheung DL. Molecular simulation of hydrophobin adsorption at an oil-water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8730-8736. [PMID: 22591377 DOI: 10.1021/la300777q] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Hydrophobins are small, amphiphilic proteins expressed by strains of filamentous fungi. They fulfill a number of biological functions, often related to adsorption at hydrophobic interfaces, and have been investigated for a number of applications in materials science and biotechnology. In order to understand the biological function and applications of these proteins, a microscopic picture of the adsorption of these proteins at interfaces is needed. Using molecular dynamics simulations with a chemically detailed coarse-grained potential, the behavior of typical hydrophobins at the water-octane interface is studied. Calculation of the interfacial adsorption strengths indicates that the adsorption is essentially irreversible, with adsorption strengths of the order of 100 k(B)T (comparable to values determined for synthetic nanoparticles but significantly larger than small molecule surfactants and biomolecules). The protein structure at the interface is unchanged at the interface, which is consistent with the biological function of these proteins. Comparison of native proteins with pseudoproteins that consist of uniform particles shows that the surface structure of these proteins has a large effect on the interfacial adsorption strengths, as does the flexibility of the protein.
Collapse
Affiliation(s)
- David L Cheung
- Department of Chemistry and Centre for Scientific Computing, University of Warwick, Coventry CV4 7AL, UK.
| |
Collapse
|
31
|
Bimbo LM, Sarparanta M, Mäkilä E, Laaksonen T, Laaksonen P, Salonen J, Linder MB, Hirvonen J, Airaksinen AJ, Santos HA. Cellular interactions of surface modified nanoporous silicon particles. NANOSCALE 2012; 4:3184-3192. [PMID: 22508528 DOI: 10.1039/c2nr30397c] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this study, the self-assembly of hydrophobin class II (HFBII) on the surface of thermally hydrocarbonized porous silicon (THCPSi) nanoparticles was investigated. The HFBII-coating converted the hydrophobic particles into more hydrophilic ones, improved the particles' cell viability in both HT-29 and Caco-2 cell lines compared to uncoated particles, and enhanced the particles' cellular association. The amount of HFBII adsorbed onto the particles was also successfully quantified by both the BCA assay and a HPLC method. Importantly, the permeation of a poorly water-soluble drug, indomethacin, loaded into THCPSi particles across Caco-2 monolayers was not affected by the protein coating. In addition, (125)I-radiolabelled HFBII did not extensively permeate the Caco-2 monolayer and was found to be stably adsorbed onto the THCPSi nanoparticles incubated in pH 7.4, which renders the particles the possibility for further track-imaging applications. The results highlight the potential of HFBII coating for improving wettability, increasing biocompatibility and possible intestinal association of PSi nanoparticulates for drug delivery applications.
Collapse
Affiliation(s)
- Luis M Bimbo
- Division of Pharmaceutical Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Finland.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Rea I, Giardina P, Longobardi S, Porro F, Casuscelli V, Rendina I, De Stefano L. Hydrophobin Vmh2-glucose complexes self-assemble in nanometric biofilms. J R Soc Interface 2012; 9:2450-6. [PMID: 22572031 DOI: 10.1098/rsif.2012.0217] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Hydrophobins are small proteins secreted by fungi, which self-assemble into amphipathic membranes at air-liquid or liquid-solid interfaces. The physical and chemical properties of some hydrophobins, both in solution and as a biofilm, are affected by poly or oligosaccharides. We have studied the interaction between glucose and the hydrophobin Vmh2 from Pleurotus ostreatus by spectroscopic ellipsometry (SE), atomic force microscopy (AFM) and water contact angle (WCA). We have found that Vmh2-glucose complexes forms a chemically stable biofilm, obtained by drop deposition on silicon, 1.6 nm thick and containing 35 per cent of glucose, quantified by SE. AFM highlighted the presence of nanometric rodlet-like aggregates (average height, width and length being equal to 3.6, 23.8 and 40 nm, respectively) on the biofilm surface, slightly different from those obtained in the absence of glucose (4.11, 23.9 and 64 nm). The wettability of a silicon surface, covered by the organic layer of Vmh2-glucose, strongly changed: WCA decreased from 90° down to 17°.
Collapse
Affiliation(s)
- Ilaria Rea
- Unit of Naples, Institute for Microelectronics and Microsystems, National Council of Research, Via Pietro Castellino 111, 80131 Naples, Italy.
| | | | | | | | | | | | | |
Collapse
|
33
|
Sarparanta MP, Bimbo LM, Mäkilä EM, Salonen JJ, Laaksonen PH, Helariutta AK, Linder MB, Hirvonen JT, Laaksonen TJ, Santos HA, Airaksinen AJ. The mucoadhesive and gastroretentive properties of hydrophobin-coated porous silicon nanoparticle oral drug delivery systems. Biomaterials 2012; 33:3353-62. [DOI: 10.1016/j.biomaterials.2012.01.029] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 01/11/2012] [Indexed: 11/30/2022]
|
34
|
Khalesi M, Deckers S, Gebruers K, Vissers L, Verachtert H, Derdelinckx G. Hydrophobins: Exceptional proteins for many applications in brewery environment and other bio-industries. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.cervis.2012.04.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
35
|
Boeuf S, Throm T, Gutt B, Strunk T, Hoffmann M, Seebach E, Mühlberg L, Brocher J, Gotterbarm T, Wenzel W, Fischer R, Richter W. Engineering hydrophobin DewA to generate surfaces that enhance adhesion of human but not bacterial cells. Acta Biomater 2012; 8:1037-47. [PMID: 22154865 DOI: 10.1016/j.actbio.2011.11.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 11/15/2011] [Accepted: 11/21/2011] [Indexed: 01/20/2023]
Abstract
Hydrophobins are fungal proteins with the ability to form immunologically inert membranes of high stability, properties that makes them attractive candidates for orthopaedic implant coatings. Cell adhesion on the surface of such implants is necessary for better integration with the neighbouring tissue; however, hydrophobin surfaces do not mediate cell adhesion. The aim of this project was therefore to investigate whether the class I hydrophobin DewA from Aspergillus nidulans can be functionalized for use on orthopaedic implant surfaces. DewA variants bearing either one RGD sequence or the laminin globular domain LG3 binding motif were engineered. The surfaces of both variants showed significantly increased adhesion of mesenchymal stem cells (MSCs), osteoblasts, fibroblasts and chondrocytes; in contrast, the insertion of binding motifs RGD and LG3 in DewA did not increase Staphylococcus aureus adhesion to the hydrophobin surfaces. Proliferation of MSCs and their osteogenic, chondrogenic and adipogenic differentiation potential were not affected on these surfaces. The engineered surfaces therefore enhanced MSC adhesion without interfering with their functionality or leading to increased risk of bacterial infection.
Collapse
Affiliation(s)
- Stephane Boeuf
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital Heidelberg, Schlierbacher Landstrasse 200a, 69118 Heidelberg, Germany
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Houmadi S, Rodriguez RD, Longobardi S, Giardina P, Fauré MC, Giocondo M, Lacaze E. Self-assembly of hydrophobin protein rodlets studied with atomic force spectroscopy in dynamic mode. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2551-2557. [PMID: 22181848 DOI: 10.1021/la2028093] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have investigated the self-assembling properties of the class I hydrophobin Vmh2 isolated from the fungus Pleurotus ostreatus. Five different hydrophobin self assembled samples including monolayers, bilayers, and rodlets have been prepared by Langmuir technique and studied at the nanoscale. Local wettability and visco-elasticity of the different hydrophobins samples were obtained from atomic force spectroscopy experiments in dynamic mode performed at different, controlled relative humidity (RH) values. It was found that hydrophobins assembled either in rodlets or in bilayer films, display similar hydropathicity and viscoelasticity in contrast to the case of monolayers, whose hydropathicity and viscoelasticity depend on the adopted preparation method (Langmuir-Blodgett or Langmuir-Schaeffer). The comparison with monolayers properties evidences a rearrangement of the bilayers adsorbed onto solid substrates. It is shown that this rearrangement leads to the formation of a stable hydrophobic film, and that the rodlets structure consists in fragments of restructured proteins bilayers. Our results support the hypothesis that the observed variations in the viscoelastic properties could be ascribed to the localization of the large flexible loop, typical of Class I hydrophobins which appears free at the air interface for LB monolayers but not for the other samples. These findings should now serve future developments and applications of hydrophobin films beyond the archetypal monolayer.
Collapse
Affiliation(s)
- S Houmadi
- CNRS, UMR7588, Institut des Nano-Sciences de Paris, 4 place Jussieu 75005 Paris, France
| | | | | | | | | | | | | |
Collapse
|
37
|
Sarparanta M, Bimbo LM, Rytkönen J, Mäkilä E, Laaksonen TJ, Laaksonen P, Nyman M, Salonen J, Linder MB, Hirvonen J, Santos HA, Airaksinen AJ. Intravenous Delivery of Hydrophobin-Functionalized Porous Silicon Nanoparticles: Stability, Plasma Protein Adsorption and Biodistribution. Mol Pharm 2012; 9:654-63. [DOI: 10.1021/mp200611d] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | | | - Jussi Rytkönen
- Department of Biosciences, University of Eastern Finland, FI-70211 Kuopio, Finland
| | - Ermei Mäkilä
- Laboratory of Industrial Physics,
Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | | | - Päivi Laaksonen
- Nanobiomaterials, VTT Technical Research Centre of Finland, FI-02044
VTT, Finland
| | | | - Jarno Salonen
- Laboratory of Industrial Physics,
Department of Physics and Astronomy, FI-20014 University of Turku, Finland
| | - Markus B. Linder
- Nanobiomaterials, VTT Technical Research Centre of Finland, FI-02044
VTT, Finland
| | | | | | | |
Collapse
|
38
|
Kottmeier K, Günther TJ, Weber J, Kurtz S, Ostermann K, Rödel G, Bley T. Constitutive expression of hydrophobin HFB1 from Trichoderma reesei in Pichia pastoris and its pre-purification by foam separation during cultivation. Eng Life Sci 2012. [DOI: 10.1002/elsc.201100155] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
| | - Tobias Jan Günther
- Institute of Radiochemistry; Helmholtz-Zentrum Dresden-Rossendorf; Dresden; Germany
| | - Jost Weber
- Institute of Food Technology and Bioprocess Engineering; Technische Universität Dresden; Dresden; Germany
| | - Susann Kurtz
- Technische Universität Dresden; Institute of Genetics; Dresden; Germany
| | - Kai Ostermann
- Technische Universität Dresden; Institute of Genetics; Dresden; Germany
| | - Gerhard Rödel
- Technische Universität Dresden; Institute of Genetics; Dresden; Germany
| | - Thomas Bley
- Institute of Food Technology and Bioprocess Engineering; Technische Universität Dresden; Dresden; Germany
| |
Collapse
|
39
|
Bimbo LM, Mäkilä E, Raula J, Laaksonen T, Laaksonen P, Strommer K, Kauppinen EI, Salonen J, Linder MB, Hirvonen J, Santos HA. Functional hydrophobin-coating of thermally hydrocarbonized porous silicon microparticles. Biomaterials 2011; 32:9089-99. [DOI: 10.1016/j.biomaterials.2011.08.011] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Accepted: 08/05/2011] [Indexed: 11/17/2022]
|
40
|
Zhang M, Wang Z, Wang Z, Feng S, Xu H, Zhao Q, Wang S, Fang J, Qiao M, Kong D. Immobilization of anti-CD31 antibody on electrospun poly(ɛ-caprolactone) scaffolds through hydrophobins for specific adhesion of endothelial cells. Colloids Surf B Biointerfaces 2011; 85:32-9. [DOI: 10.1016/j.colsurfb.2010.10.042] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2010] [Revised: 10/26/2010] [Accepted: 10/27/2010] [Indexed: 12/16/2022]
|
41
|
Lunkenbein S, Takenberg M, Nimtz M, Berger RG. Characterization of a hydrophobin of the ascomycete Paecilomyces farinosus. J Basic Microbiol 2011; 51:404-14. [DOI: 10.1002/jobm.201000305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Accepted: 11/20/2010] [Indexed: 11/11/2022]
|
42
|
Zampieri F, Wösten HAB, Scholtmeijer K. Creating Surface Properties Using a Palette of Hydrophobins. MATERIALS 2010; 3:4607-4625. [PMID: 28883343 PMCID: PMC5445765 DOI: 10.3390/ma3094607] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 08/20/2010] [Accepted: 09/03/2010] [Indexed: 01/25/2023]
Abstract
Small secreted proteins called hydrophobins play diverse roles in the life cycle of filamentous fungi. For example, the hydrophobin SC3 of Schizophyllum commune is involved in aerial hyphae formation, cell-wall assembly and attachment to hydrophobic surfaces. Hydrophobins are capable of self-assembly at a hydrophilic-hydrophobic interface, resulting in the formation of an amphipathic film. This amphipathic film can make hydrophobic surfaces of a liquid or a solid material wettable, while a hydrophilic surface can be turned into a hydrophobic one. These properties, among others, make hydrophobins of interest for medical and technical applications. For instance, hydrophobins can be used to purify proteins from complex mixtures; to reduce the friction of materials; to increase the biocompatibility of medical implants; to increase the solubility of water insoluble drugs; and to immobilize enzymes, for example, biosensor surfaces.
Collapse
Affiliation(s)
- Filippo Zampieri
- Microbiology, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
- BiOMaDe Technology Foundation, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
- Department of Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands.
| | - Han A B Wösten
- Microbiology, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
| | - Karin Scholtmeijer
- Microbiology, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
| |
Collapse
|
43
|
Expression and purification of a functionally active class I fungal hydrophobin from the entomopathogenic fungus Beauveria bassiana in E. coli. J Ind Microbiol Biotechnol 2010; 38:327-35. [DOI: 10.1007/s10295-010-0777-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Accepted: 07/01/2010] [Indexed: 10/19/2022]
|
44
|
Wang Z, Feng S, Huang Y, Li S, Xu H, Zhang X, Bai Y, Qiao M. Expression and characterization of a Grifola frondosa hydrophobin in Pichia pastoris. Protein Expr Purif 2010; 72:19-25. [DOI: 10.1016/j.pep.2010.03.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 03/23/2010] [Accepted: 03/23/2010] [Indexed: 10/19/2022]
|
45
|
Wang Z, Feng S, Huang Y, Qiao M, Zhang B, Xu H. Prokaryotic expression, purification, and polyclonal antibody production of a hydrophobin from Grifola frondosa. Acta Biochim Biophys Sin (Shanghai) 2010; 42:388-95. [PMID: 20539938 DOI: 10.1093/abbs/gmq033] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Hydrophobins are small fungal proteins that self-assemble spontaneously at hydrophilic-hydrophobic interfaces and change the polar nature of the surfaces to which they attach. A new hydrophobin gene hgfI was identified recently from the edible mushroom Grifola frondosa. In this paper, the cloning, expression, purification, and polyclonal antibody preparation of the HGFI were described. The hgfI gene was cloned into pET-28a expression plasmid at the EcoRI and NdeI restriction sites and then transformed into Escherichia coli BL21 strain. SDSPAGE analysis showed that recombinant HGFI protein was satisfactorily expressed by optimizing the concentration and induction time of IPTG. The expressed recombinant HGFI protein was purified by electroelution because its inclusion body was insoluble in traditional processing method. After a desalting procedure with Sephadex G-25, the recombinant HGFI protein was used to immunize adult rabbits following standard protocol. ELISA and western blot analysis indicated that the produced antiserum could detect both HGFI protein expressed in the prokaryotic (E. coli) and in the eukaryotic cells (G. frondosa). Furthermore, the antiserum was used to determine the localization of HGFI protein in G. frondosa cells using an immunofluorescence technique. The results demonstrated that HGFI protein was localized in the cell wall, especially at the budding position of hypha. The polyclonal antibody against HGFI will facilitate further production and functional study of HGFI protein.
Collapse
|
46
|
Han CH, Zhang GQ, Wang HX, Ng TB. Schizolysin, a hemolysin from the split gill mushroom Schizophyllum commune. FEMS Microbiol Lett 2010; 309:115-21. [PMID: 20618854 DOI: 10.1111/j.1574-6968.2010.02022.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Abstract A monomeric hemolysin with a molecular mass of 29 kDa was isolated from fresh fruiting bodies of the split gill mushroom Schizophyllum commune. The hemolysin was purified by successive adsorption on DEAE-cellulose, carboxymethyl-cellulose and Q-Sepharose and finally gel filtration on Superdex 75. This demonstrated the N-terminal sequence ATNYNKCPGA, different from those of previously reported fungal and bacterial hemolysins. The hemolysin was stable up to 40 degrees C. Only partial activity remained at 50 and 60 degrees C. Activity was indiscernible at 70 degrees C. A pH of 6.0 was optimal for activity. The hemolytic activity was most potently inhibited by dithiothreitol, sucrose and raffinose, followed by cellobiose, maltose, rhamnose, inulin, lactose, fructose and inositol. The metal ions Cu(2+), Mg(2+), Zn(2+), Al(3+) and Fe(3+) significantly, and Pb(2+) to a lesser extent, curtailed the activity of the hemolysin. The hemolysin inhibited HIV-1 reverse transcriptase with an IC(50) of 1.8 microM.
Collapse
Affiliation(s)
- Chun-Hua Han
- State Key Laboratory for Agrobiotechnology, Department of Microbiology, China Agricultural University, Beijing, China
| | | | | | | |
Collapse
|
47
|
Valo HK, Laaksonen PH, Peltonen LJ, Linder MB, Hirvonen JT, Laaksonen TJ. Multifunctional hydrophobin: toward functional coatings for drug nanoparticles. ACS NANO 2010; 4:1750-1758. [PMID: 20210303 DOI: 10.1021/nn9017558] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Efficient delivery of nanosized drug formulations to the desired body sites is not always reached despite the rapid development of pharmaceutical nanotechnologies. In spite of the undoubted effect of the size for increased bioavailability and controlled drug delivery, submicrometer formulations also require a deeper level of design. The surface properties of the particles determine the stability of the particles, interactions with the body, and targeting potentials of drugs. Thus, the efficacy of the drug can be increased utilizing the surface layer of the nanoparticles. Influencing the surface characters of the drug is the main focus of the present work, which introduces a method for preparing nanoparticles with functional sites from low-solubility drugs using hydrophobin (HFB) proteins. Particles were prepared by precipitating a lipophilic drug (beclomethasone dipropionate) in water in the presence of the HFB proteins. Particle size below 200 nm could easily be reached with increasing HFB concentration. The particles were shown to be stable for at least 5 h in suspension, and they could be stored for longer periods of time after freeze-drying. Labeling studies using green fluorescent protein (GFP) genetically fused to a HFB clearly demonstrated that the surface of the nanoparticles was covered with the hydrophobins and that the surface could be further modified by utilizing fusion proteins. This provides a template for a variety of different functional surface-bound groups that could be tailored by modifying the hydrophilic side of the HFB via protein bioengineering. In this study, the combination of proteins and traditional pharmaceutical technology was used to synthesize functionalized protein-coated nanoparticles for drug delivery purposes.
Collapse
Affiliation(s)
- Hanna K Valo
- Division of Pharmaceutical Technology, P.O. Box 56, FI-00014, University of Helsinki, Finland.
| | | | | | | | | | | |
Collapse
|
48
|
Weidner T, Samuel NT, McCrea K, Gamble LJ, Ward RS, Castner DG. Assembly and structure of alpha-helical peptide films on hydrophobic fluorocarbon surfaces. Biointerphases 2010; 5:9-16. [PMID: 20408730 PMCID: PMC3912757 DOI: 10.1116/1.3317116] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The structure, orientation, and formation of amphiphilic alpha-helix model peptide films on fluorocarbon surfaces has been monitored with sum frequency generation (SFG) vibrational spectroscopy, near-edge x-ray absorption fine structure (NEXAFS) spectroscopy, and x-ray photoelectron spectroscopy (XPS). The alpha-helix peptide is a 14-mer of hydrophilic lysine and hydrophobic leucine residues with a hydrophobic periodicity of 3.5. This periodicity yields a rigid amphiphilic peptide with leucine and lysine side chains located on opposite sides. XPS composition analysis confirms the formation of a peptide film that covers about 75% of the surface. NEXAFS data are consistent with chemically intact adsorption of the peptides. A weak linear dichroism of the amide pi( *) is likely due to the broad distribution of amide bond orientations inherent to the alpha-helical secondary structure. SFG spectra exhibit strong peaks near 2865 and 2935 cm(-1) related to aligned leucine side chains interacting with the hydrophobic surface. Water modes near 3200 and 3400 cm(-1) indicate ordering of water molecules in the adsorbed-peptide fluorocarbon surface interfacial region. Amide I peaks observed near 1655 cm(-1) confirm that the secondary structure is preserved in the adsorbed peptide. A kinetic study of the film formation process using XPS and SFG showed rapid adsorption of the peptides followed by a longer assembly process. Peptide SFG spectra taken at the air-buffer interface showed features related to well-ordered peptide films. Moving samples through the buffer surface led to the transfer of ordered peptide films onto the substrates.
Collapse
Affiliation(s)
- Tobias Weidner
- National ESCA and Surface Analysis Center for Biomedical Problems, Departments of Bioengineering and Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | - Newton T. Samuel
- National ESCA and Surface Analysis Center for Biomedical Problems, Departments of Bioengineering and Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | - Keith McCrea
- The Polymer Technology Group, Berkeley, CA 94710, USA
| | - Lara J. Gamble
- National ESCA and Surface Analysis Center for Biomedical Problems, Departments of Bioengineering and Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | | | - David G. Castner
- National ESCA and Surface Analysis Center for Biomedical Problems, Departments of Bioengineering and Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| |
Collapse
|
49
|
Haas Jimoh Akanbi M, Post E, Meter-Arkema A, Rink R, Robillard GT, Wang X, Wösten HA, Scholtmeijer K. Use of hydrophobins in formulation of water insoluble drugs for oral administration. Colloids Surf B Biointerfaces 2010; 75:526-31. [DOI: 10.1016/j.colsurfb.2009.09.030] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2009] [Revised: 08/26/2009] [Accepted: 09/22/2009] [Indexed: 11/16/2022]
|
50
|
Fischer SE, Mi L, Mao HQ, Harden JL. Biofunctional coatings via targeted covalent cross-linking of associating triblock proteins. Biomacromolecules 2009; 10:2408-17. [PMID: 19655714 DOI: 10.1021/bm900202z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A method for creating tailorable bioactive surface coatings by targeted cross-linking of network-forming CRC protein polymers is presented. The proteins are triblock constructs composed of two self-associating leucine zipper end domains (C) separated by a soluble, disordered central block (R) containing a cell or molecular binding sequence. The end domains preferentially form trimeric bundles, leading to the formation of a regular, reversible hydrogel network in a wide range of solution conditions. These hydrogel-forming proteins are useful for creating bioactive surface coatings because they self-assemble into networks, physically adsorb to a variety of substrate materials, and can be tailored to display numerous extracellular matrix (ECM)-derived peptides that interact with cells and biological macromolecules. Moreover, due to the close proximity of complementary Glu and Lys residues in the trimeric C bundles, these protein coatings can be stabilized in a targeted manner by covalent cross-linking with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC). Here, we demonstrate that such EDC-cross-linked protein coatings are stable in cell culture media and maintain a significant level of biofunctionality when various ECM-derived peptides are embedded in the central soluble block of the proteins. First, we show that EDC cross-linking enables bioinert CRC protein coatings (those without embedded cell binding domains) to resist the adhesion of human foreskin fibroblasts in normal serum medium, but does not impair the ability of cross-linked coatings of CRC-RGDS (proteins with an embedded RGDS integrin binding domain) to promote cellular attachment, focal adhesion formation, and proliferation of these cells. Next, we show that the ability of cross-linked coatings of several new CRC-based proteins containing embedded heparin-binding sequences to bind biotinylated heparin is not significantly impacted over a range of EDC concentrations. The ability to target specific functional groups for covalent cross-linking is made possible by the specificity of protein-protein interactions and represents an important advantage of protein-based materials.
Collapse
Affiliation(s)
- Stephen E Fischer
- Department of Materials Science and Engineering, Johns Hopkins University, Maryland Hall, 3400 North Charles Street, Baltimore, Maryland 21218, USA
| | | | | | | |
Collapse
|