1
|
Hu J, Chen Y, Lin M, Duan K, Xu M, Li T, Zhao Y, Lee BH, Deng H. Arginine-loaded globular BSAMA/fibrous GelMA biohybrid cryogels with multifunctional features and enhanced healing for soft gingival tissue regeneration. Int J Biol Macromol 2024; 278:134932. [PMID: 39179087 DOI: 10.1016/j.ijbiomac.2024.134932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 08/19/2024] [Accepted: 08/19/2024] [Indexed: 08/26/2024]
Abstract
Mucogingival surgery has been widely used in soft gingival tissue augmentation in which autografts are predominantly employed. However, the autografts face grand challenges, such as scarcity of palatal donor tissue and postoperative discomfort. Therefore, development of alternative soft tissue substitutes has been an imperative need. Here, we engineered an interconnected porous bovine serum albumin methacryloyl (BSAMA: B, as a drug carrier and antioxidant)/gelatin methacryloyl (GelMA: G, as a biocompatible collagen-like component)-based cryogel with L-Arginine (Arg) loaded as an angiogenic molecule, which could serve as a promising gingival tissue biohybrid scaffold. BG@Arg cryogels featured macroporous architecture, biodegradation, sponge-like properties, suturability, and sustained Arg release. Moreover, BG@Arg cryogels promoted vessel formation and collagen deposition which play an important role in tissue regeneration. Most interestingly, BG@Arg cryogels were found to enhance antioxidant effects. Finally, the therapeutic effect of BG@Arg on promoting tissue regeneration was confirmed in rat full-thickness skin and oral gingival defect models. In vivo results revealed that BG@Arg2 could promote better angiogenesis, more collagen production, and better modulation of inflammation, as compared to a commercial collagen membrane. These advantages might render BG@Arg cryogels a promising alternative to commercial collagen membrane products and possibly autografts for soft gingival tissue regeneration.
Collapse
Affiliation(s)
- Jiajun Hu
- Department of Periodontics, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yuan Chen
- Department of Periodontics, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Mian Lin
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
| | - Kairui Duan
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
| | - Mengdie Xu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
| | - Tingting Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China
| | - Yueming Zhao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Bae Hoon Lee
- Department of Periodontics, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325011, China.
| | - Hui Deng
- Department of Periodontics, School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China.
| |
Collapse
|
2
|
Geng Y, Hu J, Gao Y, Guo J, Hao H, Hao F, Li T, Chen Y, Huang W, Luo Q. Interfacially Self-Assembled Mutifunctional Protein Thin Films for Accelerated Wound Healing. ACS Macro Lett 2024:1105-1111. [PMID: 39133518 DOI: 10.1021/acsmacrolett.4c00416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
The design of mutifunctional protein films for large-area spatially ordered arrays of functional components holds great promise in the field of biomedical applications. Herein, interfacial electrostatic self-assembly was employed to construct a large-scale protein thin film by inducing electrostatic interactions between three bovine serum albumin (BSA)-coated nanoclusters and cetyltrimethylammonium bromide (CTAB), leading to their spontaneous organization and uniform distribution at the oil-water interface. This protein film demonstrated excellent multienzyme functions, high antibacterial activity, and pH-responsive drug release capability. Therefore, it can accelerate the wound closure process through a synergistic effect that includes reducing local blood glucose levels, regulating cellular oxidative stress, eradicating bacteria, and promoting cell proliferation.
Collapse
Affiliation(s)
- Yajiao Geng
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Juntao Hu
- China-Japan Union Hospital of Jilin University, Jilin University, Changchun, Jilin 130033, China
| | - Yuze Gao
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Jialiang Guo
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Hao Hao
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Fengjie Hao
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Tiezhu Li
- Institute of Agro-food Technology, Jilin Academy of Agricultural Sciences, Changchun 130033, China
| | - Yihao Chen
- Institute of Agro-food Technology, Jilin Academy of Agricultural Sciences, Changchun 130033, China
| | - Wei Huang
- Institute of Agro-food Technology, Jilin Academy of Agricultural Sciences, Changchun 130033, China
| | - Quan Luo
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
- Center for Supramolecular Chemical Biology, State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| |
Collapse
|
3
|
Mura M, Carucci C, Caddeo E, Sovová Š, Piludu M, Pekař M, Jachimska B, Parsons DF, Salis A. Specific buffer effects on the formation of BSA protein corona around amino-functionalized mesoporous silica nanoparticles. J Colloid Interface Sci 2024; 677:540-547. [PMID: 39106779 DOI: 10.1016/j.jcis.2024.07.258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 07/13/2024] [Accepted: 07/31/2024] [Indexed: 08/09/2024]
Abstract
The effect of buffer species on biomolecules and biomolecule-nanoparticle interactions is a phenomenon that has been either neglected, or not understood. Here, we study the formation of a BSA protein corona (PC) around amino-functionalized mesoporous silica nanoparticles (MSN-NH2) in the presence of different buffers (Tris, BES, cacodylate, phosphate, and citrate) at the same pH (7.15) and different concentrations (10, 50, and 100 mM). We find that BSA adsorption is buffer specific, with the adsorbed amount of BSA being 4.4 times higher in the presence of 100 mM Tris (184 ± 3 mg/g) than for 100 mM citrate (42 ± 2 mg/g). That is a considerable difference that cannot be explained by conventional theories. The results become clearer if the interaction energies between BSA and MSN-NH2, considering the electric double layer (EEDL) and the van der Waals (EvdW) terms, are evaluated. The buffer specific PC derives from buffer specific zeta potentials that, for MSN-NH2, are positive with Tris and negative with citrate buffers. A reversed sign of zeta potentials can be obtained by considering polarizability-dependent dispersion forces acting together with electrostatics to give the buffer specific outcome. These results are relevant not only to our understanding of the formation of the PC but may also apply to other bio- and nanosystems in biological media.
Collapse
Affiliation(s)
- Monica Mura
- Department of Chemical and Geological Sciences, University of Cagliari &CSGI, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Cristina Carucci
- Department of Chemical and Geological Sciences, University of Cagliari &CSGI, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Elena Caddeo
- Department of Chemical and Geological Sciences, University of Cagliari &CSGI, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Šárka Sovová
- Faculty of Chemistry, Brno University of Technology, Purkynova 464/118, 612 00 Brno, Czechia
| | - Marco Piludu
- Department of Chemical and Geological Sciences, University of Cagliari &CSGI, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Miloslav Pekař
- Faculty of Chemistry, Brno University of Technology, Purkynova 464/118, 612 00 Brno, Czechia
| | - Barbara Jachimska
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Krakow, Poland
| | - Drew F Parsons
- Department of Chemical and Geological Sciences, University of Cagliari &CSGI, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari &CSGI, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy.
| |
Collapse
|
4
|
Anju SM, Merin KA, Varghese S, Shkhair AI, Rajeevan G, Indongo G, George S. Antibody-functionalized gold nanoclusters/gold nanoparticle platform for the fluorescence turn-on detection of cardiac troponin I. Mikrochim Acta 2024; 191:124. [PMID: 38326603 DOI: 10.1007/s00604-024-06194-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/05/2024] [Indexed: 02/09/2024]
Abstract
A selective fluorescence turn-on immunosensor for the specific detection of cardiac troponin I (cTnI), the potent biomarker for myocardial infarction diagnosis, was developed with a nano couple comprised of protein-stabilized gold nanocluster and gold nanoparticle. The red fluorescence of cTnI-specific antibody tagged bovine serum albumin stabilized gold nanoclusters was quenched with gold nanoparticles (AuNP) via the intensive interaction between amine and hydroxyl functionalities of BSA and AuNP. Through this, the adsorption of gold nanoclusters at the surface of AuNP, resulting in a core-satellite assembly, was assumed to quench the fluorescence emission. While in the presence of cTnI antigen, this gets disturbed due to the formation of immunocomplex between cTnI antigen and antibody, which restricts the close interaction between gold clusters and nanoparticles, thereby restoring quenched fluorescence. The enhancement in fluorescence signal is directly related to the concentration of cTnI, and this facilitates the selective detection of cTnI in the linear concentration range 0.7 to 10 ng/mL without any interference from other potentially interfering co-existing biomolecules. An appreciable limit of detection of 0.51 ng/mL and a limit of quantification of 0.917 ng/mL for cTnI is comparable to that of the previous report.
Collapse
Affiliation(s)
- S Madanan Anju
- Department of Chemistry, School of Physical and Mathematical Science, University of Kerala, Thiruvananthapuram, Kerala, 695581, India
| | - K Abraham Merin
- Department of Chemistry, School of Physical and Mathematical Science, University of Kerala, Thiruvananthapuram, Kerala, 695581, India
| | - Susan Varghese
- Department of Chemistry, School of Physical and Mathematical Science, University of Kerala, Thiruvananthapuram, Kerala, 695581, India
| | - Ali Ibrahim Shkhair
- Department of Chemistry, School of Physical and Mathematical Science, University of Kerala, Thiruvananthapuram, Kerala, 695581, India
| | - Greeshma Rajeevan
- Department of Chemistry, School of Physical and Mathematical Science, University of Kerala, Thiruvananthapuram, Kerala, 695581, India
| | - Geneva Indongo
- Department of Chemistry, School of Physical and Mathematical Science, University of Kerala, Thiruvananthapuram, Kerala, 695581, India
| | - Sony George
- Department of Chemistry, School of Physical and Mathematical Science, University of Kerala, Thiruvananthapuram, Kerala, 695581, India.
| |
Collapse
|
5
|
Das S, Basu T, Majumdar S. Molecular interactions of acids and salts with polyampholytes. J Chem Phys 2024; 160:054901. [PMID: 38299631 DOI: 10.1063/5.0190821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 01/10/2024] [Indexed: 02/02/2024] Open
Abstract
The Hofmeister series characterizes the ability of salt anions to precipitate polyampholytes/proteins. However, the variation of protein size in the bulk solution of acids and the effect of salts on the same have not been studied well. In this article, the four acids (CH3COOH, HNO3, H2SO4, and HCl) and their effects on the hydrodynamic radius (RH) of gelatin in the bulk solution are investigated. The effects of Na salt with the same anions are also considered to draw a comparison between the interactions of acids and salts with polyampholytes. It is suggested that the interactions of polyampholytes with acids are different from those of salts. The interaction series of polyampholytes with acids with respect to the RH of the polyampholyte is CH3COO->NO3->Cl->SO42- whereas the interaction series with salts is SO42->CH3COO->Cl->NO3-. These different interactions are due to equilibration between acid dissociation and protonation of polyampholytes. Another important factor contributing to the interactions in weak acids is the fact that undissociated acid hinders the movement of dissociated acid. Experiments and simulations were performed to understand these interactions, and the results were identical in terms of the trend in RH (from the experiments) and the radius of gyration (Rg) (from the simulations). It is concluded that the valence of ions and dissociation affect the interaction in the case of acids. However, the interactions are influenced by the kosmotropic and chaotropic effect, hydration, and mobility in the case of salts.
Collapse
Affiliation(s)
- Sougat Das
- Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Telangana 502285, India
| | - Tithi Basu
- Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Telangana 502285, India
| | - Saptarshi Majumdar
- Department of Chemical Engineering, Indian Institute of Technology Hyderabad, Telangana 502285, India
| |
Collapse
|
6
|
Sacco P, Piazza F, Marsich E, Abrami M, Grassi M, Donati I. Ionic Strength Impacts the Physical Properties of Agarose Hydrogels. Gels 2024; 10:94. [PMID: 38391424 PMCID: PMC11154414 DOI: 10.3390/gels10020094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
Agarose is a natural polysaccharide known for its ability to form thermoreversible hydrogels. While the effects of curing temperature and polysaccharide concentration on mechanical properties have been discussed in the literature, the role of ionic strength has been less studied. In the present manuscript, we investigate the effects of supporting salt concentration and the role of cation (i.e. Na+ or Li+, neighbors in the Hofmeister series), on the setting and performance of agarose hydrogels. Compressive and rheological measurements show that the supporting salts reduce the immediate elastic response of agarose hydrogels, with Li+ showing a stronger effect than Na+ at high ionic strength, while they significantly increase the extent of linear stress-strain response (i.e., linear elasticity). The presence of increasing amounts of added supporting salt also leads to a reduction in hysteresis during mechanical deformation due to loading and unloading cycles, which is more pronounced with Li+ than with Na+. The combination of rheological measurements and NMR relaxometry shows a mesh size in agarose hydrogels in the order of 6-17 nm, with a thickness of the water layer bound to the biopolymer of about 3 nm. Of note, the different structuring of the water within the hydrogel network due to the different alkali seems to play a role for the final performance of the hydrogels.
Collapse
Affiliation(s)
- Pasquale Sacco
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, I-34127 Trieste, Italy; (F.P.); (I.D.)
| | - Francesco Piazza
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, I-34127 Trieste, Italy; (F.P.); (I.D.)
| | - Eleonora Marsich
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Piazza dell’Ospitale 1, I-34129 Trieste, Italy;
| | - Michela Abrami
- Department of Engineering and Architecture, University of Trieste, Via A. Valerio 6/1, I-34127 Trieste, Italy; (M.A.); (M.G.)
| | - Mario Grassi
- Department of Engineering and Architecture, University of Trieste, Via A. Valerio 6/1, I-34127 Trieste, Italy; (M.A.); (M.G.)
| | - Ivan Donati
- Department of Life Sciences, University of Trieste, Via Licio Giorgieri 5, I-34127 Trieste, Italy; (F.P.); (I.D.)
| |
Collapse
|
7
|
Soriano-Jerez Y, Macías-de la Rosa A, García-Abad L, López-Rosales L, Maza-Márquez P, García-Camacho F, Bressy C, Cerón-García MC, Molina-Grima E. Transparent antibiofouling coating to improve the efficiency of Nannochloropsis gaditana and Chlorella sorokiniana culture photobioreactors at the pilot-plant scale. CHEMOSPHERE 2024; 347:140669. [PMID: 37967681 DOI: 10.1016/j.chemosphere.2023.140669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/30/2023] [Accepted: 11/07/2023] [Indexed: 11/17/2023]
Abstract
The implementation of industrial-scale facilities for microalgae cultivation is limited due to the high operation costs. One of the main problems in obtaining an efficient and long-lasting microalgae culture system is biofouling. The particular issue when developing antibiofouling surfaces for microalgae cultures is that the material must be transparent. The main purpose of this work was to evaluate the antibiofouling efficiency of a non-toxic polydimethylsiloxane-based coating prepared with polyethylene glycol-based copolymer on different photobioreactors at the pilot-plant scale. The antifouling properties result from the development of a fouling-release coating utilizing hydrogel technology. Nannochloropsis gaditana and Chlorella sorokiniana were cultured outdoors for 3 months over the summer, when biofouling formation is at its highest due to environmental conditions, to test the coating's antibiofouling efficiency. Although biofouling was not completely prevented in either photobioreactor, the coating significantly reduced cell adhesion compared to the polydimethylsiloxane control (70% less adhesion). Therefore, this coating was shown to be a good alternative for constructing efficient closed-photobioreactors at the pilot-plant scale, at least for cultures lasting 3 months.
Collapse
Affiliation(s)
- Y Soriano-Jerez
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - A Macías-de la Rosa
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - L García-Abad
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - L López-Rosales
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - P Maza-Márquez
- Department of Microbiology and Environmental Microbiology Group, Institute of Water Research, University of Granada, Granada, Spain
| | - F García-Camacho
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| | - C Bressy
- Laboratoire MAPIEM, U.R. 4323, SeaTech Ecole d'Ingénieur, Université de Toulon, CS, 60584, 83041, Toulon, Cedex 9, France
| | - M C Cerón-García
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain.
| | - E Molina-Grima
- Department of Chemical Engineering and Research Centre CIAIMBITAL, University of Almería, 04120, Almería, Spain
| |
Collapse
|
8
|
Dos Santos ACF, Ahmadzadegan A, Ximenes E, Vlachos P, Ardekani A, Kapur S, Corvari V, Ladisch MR. Concentration-dependent diffusion of unlabeled protein within an in vitro hyaluronic acid matrix. Biotechnol Bioeng 2023. [PMID: 37466320 DOI: 10.1002/bit.28505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/16/2023] [Accepted: 07/10/2023] [Indexed: 07/20/2023]
Abstract
Diffusion and movement of subcutaneously injected biologics and high-concentration immunoglobulin G (IgG) therapeutics away from the injection site and through the subcutaneous (SC) tissue may be concentration dependent. This possibility was confirmed by in situ measurement of diffusion coefficients of unlabeled bovine IgG in phosphate-buffered saline within an in vitro hyaluronic acid matrix that represents the SC electrostatic environment. Diffusion decreased from 2.67 to 0.05 × 10-7 cm2 /s when IgG concentration increased from 25 to 73 mg/mL. The results demonstrated that in situ detection of unlabeled proteins within an in vitro SC environment provides another useful tool for the preclinical characterization of injectable biologics.
Collapse
Affiliation(s)
- Antonio C F Dos Santos
- Department of Agricultural and Biological Engineering, Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Adib Ahmadzadegan
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Eduardo Ximenes
- Department of Agricultural and Biological Engineering, Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Pavlos Vlachos
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Arezoo Ardekani
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Shiven Kapur
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Vince Corvari
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Michael R Ladisch
- Department of Agricultural and Biological Engineering, Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, Indiana, USA
- Eli Lilly, Indianapolis, Indiana, USA
| |
Collapse
|
9
|
Nienhaus K, Nienhaus GU. Mechanistic Understanding of Protein Corona Formation around Nanoparticles: Old Puzzles and New Insights. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2301663. [PMID: 37010040 DOI: 10.1002/smll.202301663] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/14/2023] [Indexed: 06/19/2023]
Abstract
Although a wide variety of nanoparticles (NPs) have been engineered for use as disease markers or drug delivery agents, the number of nanomedicines in clinical use has hitherto remained small. A key obstacle in nanomedicine development is the lack of a deep mechanistic understanding of NP interactions in the bio-environment. Here, the focus is on the biomolecular adsorption layer (protein corona), which quickly enshrouds a pristine NP exposed to a biofluid and modifies the way the NP interacts with the bio-environment. After a brief introduction of NPs for nanomedicine, proteins, and their mutual interactions, research aimed at addressing fundamental properties of the protein corona, specifically its mono-/multilayer structure, reversibility and irreversibility, time dependence, as well as its role in NP agglomeration, is critically reviewed. It becomes quite evident that the knowledge of the protein corona is still fragmented, and conflicting results on fundamental issues call for further mechanistic studies. The article concludes with a discussion of future research directions that should be taken to advance the understanding of the protein corona around NPs. This knowledge will provide NP developers with the predictive power to account for these interactions in the design of efficacious nanomedicines.
Collapse
Affiliation(s)
- Karin Nienhaus
- Institute of Applied Physics, Karlsruhe Institute of Technology, 76049, Karlsruhe, Germany
| | - Gerd Ulrich Nienhaus
- Institute of Applied Physics, Karlsruhe Institute of Technology, 76049, Karlsruhe, Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021, Karlsruhe, Germany
- Institute of Biological and Chemical Systems, Karlsruhe Institute of Technology, 76021, Karlsruhe, Germany
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| |
Collapse
|
10
|
Idaszek J, Jaroszewicz J, Choińska E, Górecka Ż, Hyc A, Osiecka-Iwan A, Wielunska-Kuś B, Święszkowski W, Moskalewski S. Toward osteomimetic formation of calcium phosphate coatings with carbonated hydroxyapatite. BIOMATERIALS ADVANCES 2023; 149:213403. [PMID: 37075660 DOI: 10.1016/j.bioadv.2023.213403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/07/2023] [Accepted: 03/22/2023] [Indexed: 04/21/2023]
Abstract
Biomimetic production of coatings on various types of scaffolds is based mainly on simulated body fluid precipitation (SBF) of apatites, or, if the HCO3- is present, carbonated apatites. Recently, we proposed formation of calcium phosphates (CaP) precipitates by alkaline phosphatase (ALP) hydrolysing glycerophosphate in presence of calcium ions as an alternative to SBF. Since apatites synthesized in bone by the ALP activity contain carbonate anions, it was tempting to investigate whether the phosphatase method could be advanced into osteomimetic one. Therefore, taking example from the SBF studies, phosphatase incubation medium was enriched with carbonate ions at 4.2 and 27 mM concentration. X-ray diffraction of the precipitates disclosed peaks typical for hydroxyapatite (HAP). FTIR analysis showed that at both concentration of carbonate ions, apatites underwent both B and A substitution, more extensive at higher concentration. Thus, osteomimetic approach produced carbonated hydroxyapatites of the type encountered in bone tissue even at HCO3- concentration as low as 4.2 mM. Composite plates made of poly(ε-caprolactone) and mixture of β-tricalcium phosphate and hydroxyapatite at mass ratio of 1:0.5:0.5, respectively, were covered by CaP coatings, i.e., CaP-0, CaP-4.2, CaP-27, by incubation in phosphatase medium containing 0, 4.2 or 27 mM of NaHCO3, respectively. Pristine or coated PCL50 plates were used to study release of calcium and adsorption/desorption of proteins, or seeded with human bone marrow mesenchymal stem cells (hMSC) for study of cell adhesion, spreading and osteogenic differentiation. Introduction of carbonate into the CaP coatings significantly increased release of Ca2+ in a carbonate concentration-dependent manner; the release was up to 4 times higher, when compared to CaP-0 coating, and reached 0.41 ± 0.01 mM for CaP-27 after first 24 h. Coating CaP-4.2 yielded significantly higher adsorption of bovine serum albumin and cytochrome C than CaP-0. All of the CaP coatings improved significantly hMSC adhesion, however, only CaP-4.2 provided 2 times higher cell number than PCL50 after 2 weeks of culture. Interestingly, ALP activity calculated per cell number was the highest on pristine plates, presumably because hMSC differentiate preferentially into osteoblasts at lower seeding densities. It appears, therefore, that the osteomimetic approach may be useful for production of carbonated hydroxyapatite coatings, but requires further studies and replacing intestinal phosphatase used in this work with one originating from bone.
Collapse
Affiliation(s)
- Joanna Idaszek
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, Warsaw 02-507, Poland.
| | - Jakub Jaroszewicz
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, Warsaw 02-507, Poland
| | - Emilia Choińska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, Warsaw 02-507, Poland
| | - Żaneta Górecka
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, Warsaw 02-507, Poland
| | - Anna Hyc
- Department of Histology and Embryology, Medical University of Warsaw, Chalubinskiego 5, 02-004 Warsaw, Poland
| | - Anna Osiecka-Iwan
- Department of Histology and Embryology, Medical University of Warsaw, Chalubinskiego 5, 02-004 Warsaw, Poland
| | - Barbara Wielunska-Kuś
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, Warsaw 02-507, Poland
| | - Wojciech Święszkowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, Warsaw 02-507, Poland
| | - Stanisław Moskalewski
- Department of Histology and Embryology, Medical University of Warsaw, Chalubinskiego 5, 02-004 Warsaw, Poland
| |
Collapse
|
11
|
Mura M, Humphreys B, Gilbert J, Salis A, Nylander T. Cation and buffer specific effects on the DNA-lipid interaction. Colloids Surf B Biointerfaces 2023; 223:113187. [PMID: 36739672 DOI: 10.1016/j.colsurfb.2023.113187] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023]
Abstract
Knowledge of DNA - lipid layer interactions is key for the development of biosensors, synthetic nanopores, scaffolds, and gene-delivery systems. These interactions are strongly affected by the ionic composition of the solvent. We have combined quartz crystal microbalance (QCM) and ellipsometry measurements to reveal how pH, buffers and alkali metal chloride salts affect the interaction of DNA with lipid bilayers (DOTAP/DOPC 30:70 in moles). We found that the thickness of the DNA layer adsorbed onto the lipid bilayer decreased in the order citrate > phosphate > Tris > HEPES. The effect of cations on the thickness of the DNA layer decreased in the order (K+ > Na+ > Cs+ ∼ Li+). Rationalization of the experimental results requires that adsorption, due to cation specific charge screening, is driven by the simultaneous action of two mechanisms namely, the law of matching water affinities for kosmotropes (Li+) and ion dispersion forces for chaotropes (Cs+). The outcome of these two opposing mechanisms is a "bell-shaped" specific cations sequence. Moreover, a superimposed buffer specificity, which goes beyond the simple effect of pH regulation, further modulated cation specificity. In summary, DNA-lipid bilayer interactions are maximized if citrate buffer (50 mM, pH 7.4) and KCl (100 mM) are used.
Collapse
Affiliation(s)
- Monica Mura
- Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden; Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Via della Lastruccia 3, Sesto Fiorentino (FI), I-50019, Italy
| | - Ben Humphreys
- Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Jennifer Gilbert
- Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Via della Lastruccia 3, Sesto Fiorentino (FI), I-50019, Italy.
| | - Tommy Nylander
- Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
| |
Collapse
|
12
|
Jang W, Mun SJ, Kim SY, Bong KW. Controlled growth factor delivery via a degradable poly(lactic acid) hydrogel microcarrier synthesized using degassed micromolding lithography. Colloids Surf B Biointerfaces 2023; 222:113088. [PMID: 36577342 DOI: 10.1016/j.colsurfb.2022.113088] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/05/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
Controlled and targeted delivery of growth factors to biological environments is important for tissue regeneration. Polylactic acid (PLA) hydrogel microparticles are attractive carriers for the delivery of therapeutic cargoes based on their superior biocompatibility and biodegradability, uniform encapsulation of cargoes, and non-requirement of organic solvents during particle synthesis. In this study, we newly present controlled growth factor delivery utilizing PLA-based hydrogel microcarriers synthesized via degassed micromolding lithography (DML). Based on the direct gelation procedure from the single-phase aqueous precursor in DML, bovine serum albumin, a model protein of growth factor, and fibroblast growth factor were encapsulated into microparticles with uniform distribution. In addition, by tuning the monomer concentration and adding a hydrolytically stable crosslinker, the release of encapsulated cargoes was efficiently controlled and extended to 2 weeks. Finally, we demonstrated the biological activity of encapsulated FGF-2 in PLA-based microparticles using a fibroblast proliferation assay.
Collapse
Affiliation(s)
- Wookyoung Jang
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Seok Joon Mun
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Soung-Yon Kim
- Department of Orthopaedic Surgery, Kangwon National University Hospital, Baengnyeong-ro 156, Chuncheon-si, Gangwon-do 24289, Republic of Korea.
| | - Ki Wan Bong
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
| |
Collapse
|
13
|
Saha R, Mitra RK. Trivalent cation-induced phase separation in proteins: ion specific contribution in hydration also counts. Phys Chem Chem Phys 2022; 24:23661-23668. [PMID: 36148614 DOI: 10.1039/d2cp01061e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multivalent (specifically trivalent) metal ions are known to induce microscopic phase separation (commonly termed as liquid-liquid phase separation (LLPS)) in negatively charged globular proteins even at ambient temperatures, the process being mostly driven by protein charge neutralization followed by aggregation. Recent simulation studies have revealed that such self-aggregation of proteins is entropy driven; however, it is associated with a solvation effect, which could as well be different from the usual notion of hydrophobic hydration. In this contribution we have experimentally probed the explicit change in hydration associated with ion-induced LLPS formation of a globular protein bovine serum albumin (BSA) at ambient temperature using FIR-THz FTIR spectroscopy (50-750 cm-1; 1.5-22.5 THz). We have used ions of different charges: Na+, K+, Ca2+, Mg2+, La3+, Y3+, Ho3+ and Al3+. We found that all the trivalent ions induce LLPS; the formation of large aggregates has been evidenced from dynamic light scattering (DLS) measurements, but without perturbing the protein structure as confirmed from circular dichroism (CD) measurements. From the frequency dependent absorption coefficient (α(ν)) measurements in the THz frequency domain we estimate the various stretching/vibrational modes of water and we found that ions, forming LLPS, produce definite perturbation in the overall hydration, the extent of which is ion specific, invoking the definite role of hydrophilic (electrostatic) hydration of ions in the observed LLPS process.
Collapse
Affiliation(s)
- Ria Saha
- Department of Chemical, Biological & Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block-JD; Sector-III, Salt Lake, Kolkata-700106, India.
| | - Rajib Kumar Mitra
- Department of Chemical, Biological & Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block-JD; Sector-III, Salt Lake, Kolkata-700106, India.
| |
Collapse
|
14
|
Specific electrolyte effects on hemoglobin in denaturing medium investigated through electro spray ionization mass spectrometry. J Inorg Biochem 2022; 234:111872. [DOI: 10.1016/j.jinorgbio.2022.111872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/29/2022] [Accepted: 05/19/2022] [Indexed: 12/14/2022]
|
15
|
Lusci G, Pivetta T, Carucci C, Parsons DF, Salis A, Monduzzi M. BSA fragmentation specifically induced by added electrolytes: An electrospray ionization mass spectrometry investigation. Colloids Surf B Biointerfaces 2022; 218:112726. [PMID: 35914467 DOI: 10.1016/j.colsurfb.2022.112726] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/16/2022] [Accepted: 07/24/2022] [Indexed: 10/16/2022]
Abstract
Biointerfaces are significantly affected by electrolytes according to the Hofmeister series. This work reports a systematic investigation on the effect of different metal chlorides, sodium and potassium bromides, iodides and thiocyanates, on the ESI/MS spectra of bovine serum albumin (BSA) in aqueous solution at pH = 2.7. The concentration of each salt was varied to maximize the quality of the ESI/MS spectrum, in terms of peak intensity and bell-shaped profile. The ESI/MS spectra of BSA in the absence and in the presence of salts showed a main protein pattern characterized by the expected mass of 66.5 kDa, except the case of BSA/RbCl (mass 65.3 kDa). In all systems we observed an additional pattern, characterized by at least three peaks with low intensity, whose deconvolution led to suggest the formation of a BSA fragment with a mass of 19.2 kDa. Only NaCl increased the intensity of the peaks of the main BSA pattern, while minimizing that of the fragment. NaCl addition seems to play a crucial role in stabilizing the BSA ionized interface against hydrolysis of peptide bonds, through different synergistic mechanisms. To quantify the observed specific electrolyte effects, two "Hofmeister" parameters (Hs and Ps) are proposed. They are obtained using the ratio of (BSA-Salt)/BSA peak intensities for both the BSA main pattern and for its fragment. SYNOPSIS: NaCl stabilizes BSA ion and almost prevents fragmentation due to denaturing pH.
Collapse
Affiliation(s)
- Gloria Lusci
- Dept. Chemical and Geological Science, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, Cagliari, Italy
| | - Tiziana Pivetta
- Dept. Chemical and Geological Science, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, Cagliari, Italy
| | - Cristina Carucci
- Dept. Chemical and Geological Science, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, Cagliari, Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy. Unità Operativa University of Cagliari, Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy
| | - Drew Francis Parsons
- Dept. Chemical and Geological Science, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, Cagliari, Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy. Unità Operativa University of Cagliari, Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy.
| | - Andrea Salis
- Dept. Chemical and Geological Science, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, Cagliari, Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy. Unità Operativa University of Cagliari, Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy.
| | - Maura Monduzzi
- Dept. Chemical and Geological Science, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, Cagliari, Italy; Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy. Unità Operativa University of Cagliari, Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy.
| |
Collapse
|
16
|
Pisani S, Chiesa E, Genta I, Dorati R, Gregorini M, Grignano MA, Ramus M, Ceccarelli G, Croce S, Valsecchi C, Monti M, Rampino T, Conti B. Liposome Formulation and In Vitro Testing in Non-Physiological Conditions Addressed to Ex Vivo Kidney Perfusion. Int J Mol Sci 2022; 23:ijms23147999. [PMID: 35887348 PMCID: PMC9324182 DOI: 10.3390/ijms23147999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/15/2022] [Accepted: 07/17/2022] [Indexed: 02/01/2023] Open
Abstract
This work focuses on formulating liposomes to be used in isolated kidney dynamic machine perfusion in hypothermic conditions as drug delivery systems to improve preservation of transplantable organs. The need mainly arises from use of kidneys from marginal donors for transplantation that are more exposed to ischemic/reperfusion injury compared to those from standard donors. Two liposome preparation techniques, thin film hydration and microfluidic techniques, are explored for formulating liposomes loaded with two model proteins, myoglobin and bovine serum albumin. The protein-loaded liposomes are characterized for their size by DLS and morphology by TEM. Protein releases from the liposomes are tested in PERF-GEN perfusion fluid, 4 °C, and compared to the in vitro protein release in PBS, 37 °C. Fluorescent liposome uptake is analyzed by fluorescent microscope in vitro on epithelial tubular renal cell cultures and ex vivo on isolated pig kidney in hypothermic perfusion conditions. The results show that microfluidics are a superior technique for obtaining reproducible spherical liposomes with suitable size below 200 nm. Protein encapsulation efficiency is affected by its molecular weight and isoelectric point. Lowering incubation temperature slows down the proteins release; the perfusion fluid significantly affects the release of proteins sensitive to ionic media (such as BSA). Liposomes are taken up by epithelial tubular renal cells in two hours’ incubation time.
Collapse
Affiliation(s)
- Silvia Pisani
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
| | - Marilena Gregorini
- Department of Internal Medicine and Therapeutics, University of Pavia, 27100 Pavia, Italy;
| | - Maria Antonietta Grignano
- Department of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (M.A.G.); (M.R.); (T.R.)
| | - Marina Ramus
- Department of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (M.A.G.); (M.R.); (T.R.)
| | - Gabriele Ceccarelli
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Via Forlanini 2, 27100 Pavia, Italy;
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
- Immunology & Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (C.V.)
| | - Stefania Croce
- Immunology & Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (C.V.)
| | - Chiara Valsecchi
- Immunology & Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (C.V.)
| | - Manuela Monti
- Human Anatomy Unit, Department of Public Health, Experimental and Forensic Medicine, Histology and Embryology Unit University of Pavia, Biotechnology Laboratories Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Teresa Rampino
- Department of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (M.A.G.); (M.R.); (T.R.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
- Correspondence: ; Tel.: +39-0382987378
| |
Collapse
|
17
|
Effect of Ionic and Non-Ionic Surfactant on Bovine Serum Albumin Encapsulation and Biological Properties of Emulsion-Electrospun Fibers. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103232. [PMID: 35630708 PMCID: PMC9143061 DOI: 10.3390/molecules27103232] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/13/2022] [Accepted: 05/16/2022] [Indexed: 11/29/2022]
Abstract
Emulsion electrospinning is a method of modifying a fibers’ surface and functional properties by encapsulation of the bioactive molecules. In our studies, bovine serum albumin (BSA) played the role of the modifier, and to protect the protein during the electrospinning process, the W/O (water-in-oil) emulsions were prepared, consisting of polymer and micelles formed from BSA and anionic (sodium dodecyl sulfate–S) or nonionic (Tween 80–T) surfactant. It was found that the micelle size distribution was strongly dependent on the nature and the amount of the surfactant, indicating that a higher concentration of the surfactant results in a higher tendency to form smaller micelles (4–9 µm for S and 8–13 µm for T). The appearance of anionic surfactant micelles reduced the diameter of the fiber (100–700 nm) and the wettability of the nonwoven surface (up to 77°) compared to un-modified PCL polymer fibers (100–900 nm and 130°). The use of a non-ionic surfactant resulted in better loading efficiency of micelles with albumin (about 90%), lower wettability of the nonwoven fabric (about 25°) and the formation of larger fibers (100–1100 nm). X-ray photoelectron spectroscopy (XPS) was used to detect the presence of the protein, and UV-Vis spectrophotometry was used to determine the loading efficiency and the nature of the release. The results showed that the location of the micelles influenced the release profiles of the protein, and the materials modified with micelles with the nonionic surfactant showed no burst release. The release kinetics was characteristic of the zero-order release model compared to anionic surfactants. The selected surfactant concentrations did not adversely affect the biological properties of fibrous substrates, such as high viability and low cytotoxicity of RAW macrophages 264.7.
Collapse
|
18
|
Metabolically driven maturation of human-induced-pluripotent-stem-cell-derived cardiac microtissues on microfluidic chips. Nat Biomed Eng 2022; 6:372-388. [PMID: 35478228 DOI: 10.1038/s41551-022-00884-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 03/14/2022] [Indexed: 12/29/2022]
Abstract
The immature physiology of cardiomyocytes derived from human induced pluripotent stem cells (hiPSCs) limits their utility for drug screening and disease modelling. Here we show that suitable combinations of mechanical stimuli and metabolic cues can enhance the maturation of hiPSC-derived cardiomyocytes, and that the maturation-inducing cues have phenotype-dependent effects on the cells' action-potential morphology and calcium handling. By using microfluidic chips that enhanced the alignment and extracellular-matrix production of cardiac microtissues derived from genetically distinct sources of hiPSC-derived cardiomyocytes, we identified fatty-acid-enriched maturation media that improved the cells' mitochondrial structure and calcium handling, and observed divergent cell-source-dependent effects on action-potential duration (APD). Specifically, in the presence of maturation media, tissues with abnormally prolonged APDs exhibited shorter APDs, and tissues with aberrantly short APDs displayed prolonged APDs. Regardless of cell source, tissue maturation reduced variabilities in spontaneous beat rate and in APD, and led to converging cell phenotypes (with APDs within the 300-450 ms range characteristic of human left ventricular cardiomyocytes) that improved the modelling of the effects of pro-arrhythmic drugs on cardiac tissue.
Collapse
|
19
|
Ahrari F, Yousefi M, Habibi Z, Mohammadi M. Application of undecanedicarboxylic acid to prepare cross-linked enzymes (CLEs) of Rhizomucor miehei lipase (RML); Selective enrichment of polyunsaturated fatty acids. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
20
|
Madeira PP, Rocha IL, Rosa ME, Freire MG, Coutinho JA. On the aggregation of bovine serum albumin. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
21
|
Brambilla D, Mussida A, Ferretti AM, Sola L, Damin F, Chiari M. Polymeric Coating of Silica Microspheres for Biological Applications: Suppression of Non-Specific Binding and Functionalization with Biomolecules. Polymers (Basel) 2022; 14:730. [PMID: 35215642 PMCID: PMC8877092 DOI: 10.3390/polym14040730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 12/25/2022] Open
Abstract
The use of micro- and nanoparticles in biological applications has dramatically grown during the last few decades due to the ease of protocols development and compatibility with microfluidics devices. Particles can be composed by different materials, i.e., polymers, inorganic dielectrics, and metals. Among them, silica is a suitable material for the development of biosensing applications. Depending on their final application, the surface properties of particles, including silica, are tailored by means of chemical modification or polymeric coating. The latter strategy represents a powerful tool to create a hydrophilic environment that enables the functionalization of particles with biomolecules and the further interaction with analytes. Here, the use of MCP-6, a dimethylacrylamide (DMA)-based ter-copolymer, to coat silica microspheres is presented. MCP-6 offers unprecedented ease of coating, imparting silica particles a hydrophilic coating with antifouling properties that is able to provide high-density immobilization of biological probes.
Collapse
Affiliation(s)
- Dario Brambilla
- Institute of Chemical Science and Technology “G. Natta”, National Research Council of Italy (CNR-SCITEC), 20131 Milan, Italy; (A.M.); (A.M.F.); (L.S.); (F.D.); (M.C.)
| | | | | | | | | | | |
Collapse
|
22
|
Influence of Low Molecular Weight Salts on the Viscosity of Aqueous-Buffer Bovine Serum Albumin Solutions. Molecules 2022; 27:molecules27030999. [PMID: 35164264 PMCID: PMC8839888 DOI: 10.3390/molecules27030999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 11/17/2022] Open
Abstract
Pharmaceutical design of protein formulations aims at maximum efficiency (protein concentration) and minimum viscosity. Therefore, it is important to know the nature of protein-protein interactions and their influence on viscosity. In this work, we investigated the dependence of the viscosity of BSA in an aqueous 20 mM acetate buffer at pH = 4.3 on protein concentration and on temperature (5-45 °C). The viscosity of the solution increased with protein concentration and was 230% higher than the viscosity of the protein-free formulation at 160 mg/mL. The viscosity decreased by almost 60% in the temperature range from 5 to 45 °C. The agreement of the modified Arrhenius theory with experiment was quantitative, whereas a hard-sphere model provided only a qualitative description of the experimental results. We also investigated the viscosity of a 100 mg/mL BSA solution as a function of the concentration of added low molecular weight salts (LiCl, NaCl, KCl, RbCl, CsCl, NaBr, NaI) in the range of salt concentrations up to 1.75 mol/L. In addition, the particle size and zeta potential of BSA-salt mixtures were determined for solutions containing 0.5 mol/L salt. The trends with respect to the different anions followed a direct Hofmeister series (Cl- > Br- > I-), whereas for cations in the case of viscosity the indirect Hofmeister series was observed (Li+ > Na+ > K+ > Rb+ > Cs+), but the values of particle sizes and zeta potential did not show cation-specific effects. Since the protein is positively charged at pH = 4.3, anions are more attracted to the protein surface and shield its charge, while the interaction with cations is less pronounced. We hypothesize that salt surface charge shielding reduces protein colloidal stability and promotes protein aggregate formation.
Collapse
|
23
|
Segantini M, Parmeggiani M, Ballesio A, Palmara G, Frascella F, Marasso SL, Cocuzza M. Design of a Portable Microfluidic Platform for EGOT-Based in Liquid Biosensing. SENSORS (BASEL, SWITZERLAND) 2022; 22:969. [PMID: 35161715 PMCID: PMC8839715 DOI: 10.3390/s22030969] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 01/21/2023]
Abstract
In biosensing applications, the exploitation of organic transistors gated via a liquid electrolyte has increased in the last years thanks to their enormous advantages in terms of sensitivity, low cost and power consumption. However, a practical aspect limiting the use of these devices in real applications is the contamination of the organic material, which represents an obstacle for the realization of a portable sensing platform based on electrolyte-gated organic transistors (EGOTs). In this work, a novel contamination-free microfluidic platform allowing differential measurements is presented and validated through finite element modeling simulations. The proposed design allows the exposure of the sensing electrode without contaminating the EGOT device during the whole sensing tests protocol. Furthermore, the platform is exploited to perform the detection of bovine serum albumin (BSA) as a validation test for the introduced differential protocol, demonstrating the capability to detect BSA at 1 pM concentration. The lack of contamination and the differential measurements provided in this work can be the first steps towards the realization of a reliable EGOT-based portable sensing instrument.
Collapse
Affiliation(s)
- Matteo Segantini
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (M.S.); (A.B.); (G.P.); (F.F.); (S.L.M.); (M.C.)
| | - Matteo Parmeggiani
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (M.S.); (A.B.); (G.P.); (F.F.); (S.L.M.); (M.C.)
| | - Alberto Ballesio
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (M.S.); (A.B.); (G.P.); (F.F.); (S.L.M.); (M.C.)
| | - Gianluca Palmara
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (M.S.); (A.B.); (G.P.); (F.F.); (S.L.M.); (M.C.)
| | - Francesca Frascella
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (M.S.); (A.B.); (G.P.); (F.F.); (S.L.M.); (M.C.)
| | - Simone Luigi Marasso
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (M.S.); (A.B.); (G.P.); (F.F.); (S.L.M.); (M.C.)
- CNR-IMEM, Parco Area delle Scienze, 37a, 43124 Parma, Italy
| | - Matteo Cocuzza
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (M.S.); (A.B.); (G.P.); (F.F.); (S.L.M.); (M.C.)
- CNR-IMEM, Parco Area delle Scienze, 37a, 43124 Parma, Italy
| |
Collapse
|
24
|
Detection of Oenological Polyphenols via QCM-D Measurements. NANOMATERIALS 2022; 12:nano12010166. [PMID: 35010116 PMCID: PMC8746829 DOI: 10.3390/nano12010166] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/20/2021] [Accepted: 12/29/2021] [Indexed: 02/04/2023]
Abstract
Polyphenols are a family of compounds present in grapes, musts, and wines. Their dosage is associated with the grape ripening, correct must fermentation, and final wine properties. Owing to their anti-inflammatory properties, they are also relevant for health applications. To date, such compounds are detected mainly via standard chemical analysis, which is costly for constant monitoring and requires a specialized laboratory. Cheap and portable sensors would be desirable to reduce costs and speed up measurements. This paper illustrates the development of strategies for sensor surface chemical functionalization for polyphenol detection. We perform measurements by using a commercial quartz crystal microbalance with dissipation monitoring apparatus. Chemical functionalizations are based on proteins (bovine serum albumin and gelatin type A) or customized peptides derived from istatine-5 and murine salivary protein-5. Commercial oenological additives containing pure gallic tannins or proanthocyanidins, dissolved in water or commercial wine, are used for the analysis. Results indicate that selected functionalizations enable the detection of the two different tannin families, suggesting a relationship between the recorded signal and concentration. Gelatin A also demonstrates the ability to discriminate gallic tannins from proanthocyanidins. Outcomes are promising and pave the way for the exploitation of such devices for precision oenology.
Collapse
|
25
|
Deshwal A, Shikha, Maiti S. Trade-off between carbohydrates and metal ions regulates the chemotactic directionality of alkaline phosphatase. Chem Commun (Camb) 2022; 58:12851-12854. [DOI: 10.1039/d2cc04360b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of the Hofmeister interaction in governing the chemotactic behavior of alkaline phosphatase in the presence of carbohydrate and metal ion gradients has been established.
Collapse
Affiliation(s)
- Akshi Deshwal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Manauli 140306, India
| | - Shikha
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Manauli 140306, India
| | - Subhabrata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Manauli 140306, India
| |
Collapse
|
26
|
Rashid S, Ward-Bond J, Krupin O, Berini P. Non-specific adsorption of protein to microfluidic materials. Colloids Surf B Biointerfaces 2021; 208:112138. [DOI: 10.1016/j.colsurfb.2021.112138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 11/28/2022]
|
27
|
Uddin N, Warriner LW, Pack DW, DeRouchey JE. Enhanced Gene Delivery and CRISPR/Cas9 Homology-Directed Repair in Serum by Minimally Succinylated Polyethylenimine. Mol Pharm 2021; 18:3452-3463. [PMID: 34387498 DOI: 10.1021/acs.molpharmaceut.1c00368] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Gene therapy aims to treat patients by altering or controlling gene expression. The field of gene therapy has had increasing success in recent years primarily using viral-based approaches; however, there is still significant interest toward the use of polymeric materials due to their potential as flexible, low-cost scaffolds for gene delivery that do not suffer the mutagenesis and immunogenicity concerns of viral vectors. To address the challenges of efficiency and biocompatibility, a series of zwitterion-like polyethylenimine derivatives (zPEIs) were produced via the succinylation of 2-11.5% of polyethylenimine (PEI) amines. With increasing modification, zPEI polyplexes exhibited decreased serum-protein aggregation and dissociated more easily in the presence of a competitor polyanion when compared to unmodified PEI. Surprisingly, the gene delivery mediated in the presence of serum showed that succinylation of as few as 2% of PEI amines resulted in transgene expression 260- to 480-fold higher than that of unmodified PEI and 50- to 65-fold higher than that of commercial PEI-PEG2k in HEK293 and HeLa cells, respectively. Remarkably, the same zPEIs also produced 16-fold greater efficiency of CRISPR/Cas9 gene knock-in compared to unmodified PEI in the presence of serum. In addition, we show that 2% succinylation does not significantly decrease polymer/DNA binding ability or serum protein interaction to a significant extent, yet this small modification is still sufficient to provide a remarkable increase in transgene expression and gene knock-in in the presence of serum.
Collapse
Affiliation(s)
- Nasir Uddin
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Logan W Warriner
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Daniel W Pack
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, United States.,Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Jason E DeRouchey
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, United States
| |
Collapse
|
28
|
The Effects of Temperature and Pressure on Protein-Ligand Binding in the Presence of Mars-Relevant Salts. BIOLOGY 2021; 10:biology10070687. [PMID: 34356542 PMCID: PMC8301423 DOI: 10.3390/biology10070687] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/13/2021] [Accepted: 07/16/2021] [Indexed: 11/19/2022]
Abstract
Simple Summary Interactions of ligands with proteins are central to all reactions in the biological cell. How such reactions are affected by harsh environmental conditions, such as low temperatures, high pressures, and high concentrations of biologically destructive salts, is still largely unknown. Our work focused on specific salts found on Mars to understand whether the planet’s potentially liquid, water-rich subsurface harbors conditions that are theoretically favorable for life. Our data show that, while magnesium chloride and sulfate do not significantly alter protein–ligand interactions, the perchlorate ion strongly affects protein–ligand binding. However, the temperature and pressure conditions encountered on Mars do not necessarily preclude protein–ligand interactions of the type studied here. Abstract Protein–ligand interactions are fundamental to all biochemical processes. Generally, these processes are studied at ambient temperature and pressure conditions. We investigated the binding of the small ligand 8-anilinonaphthalene-1-sulfonic acid (ANS) to the multifunctional protein bovine serum albumin (BSA) at ambient and low temperatures and at high pressure conditions, in the presence of ions associated with the surface and subsurface of Mars, including the chaotropic perchlorate ion. We found that salts such as magnesium chloride and sulfate only slightly affect the protein–ligand complex formation. In contrast, magnesium perchlorate strongly affects the interaction between ANS and BSA at the single site level, leading to a change in stoichiometry and strength of ligand binding. Interestingly, both a decrease in temperature and an increase in pressure favor the ligand binding process, resulting in a negative change in protein–ligand binding volume. This suggests that biochemical reactions that are fundamental for the regulation of biological processes are theoretically possible outside standard temperature and pressure conditions, such as in the harsh conditions of the Martian subsurface.
Collapse
|
29
|
Abeyratne-Perera HK, Basu S, Chandran PL. Shells of compacted DNA as nanocontainers transporting proteins in multiplexed delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 127:112184. [PMID: 34225845 DOI: 10.1016/j.msec.2021.112184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 11/24/2022]
Abstract
Polyethyleneimine (PEI) polymers are known to compact DNA strands into spheroid, toroid, or rod structures. A formulation with mannose-grafted PEI (PEIm), however, was reported to compact DNA into ~100 nm spheroids that indented like thin-walled pressurized shells. The goal of the study is to understand why mannose bristles divert the traditional pathway of PEI-DNA compaction to produce shell-like structures, and to manipulate the process so that proteins can be packed into the core of the assembling shells for co-delivering DNA and proteins into cells. DLS, AFM, and TEM imaging provide a consistent picture that BSA proteins can be packed into the shells without altering the shell architecture, as long as the proteins were added during the time course of shell assembly. Force spectroscopy studies reveal that DNA shells that buckle also have a rich surface-coating of mannose, indicating that a micelle-like partitioning of hydrophobic and hydrophilic layers governs shell assembly. When HEK293T cells are spiked with BSA-laden DNA shells, co-transfection of DNA and BSA is observed at higher levels than control formulations. Distinct micron-sized features appear having both green fluorescence from BSA-FITC and blue fluorescence from NucBlue DNA stain, suggesting BSA release in nucleus and secretory granules. With DNA nanocontainers, proteins can take advantage of the efficiency of PEI-based DNA transfection for hitchhiking into cells while being shielded from the challenges of the intracellular route. DNA nanocontainers are rapid to assemble, not dependent on the DNA sequence, and can be adapted for different protein types; thereby having potential to serve as a high-throughput platform in scenarios where DNA and protein have to be released at the same site and time within cells (e.g., theranostics, multiplexed co-delivery, gene editing).
Collapse
Affiliation(s)
- Hashanthi K Abeyratne-Perera
- Biochemistry and Molecular Biology Department, College of Medicine, Howard University, Washington, DC, United States of America
| | - Saswati Basu
- Chemical Engineering Department, College of Engineering and Architecture, Howard University, Washington, DC, United States of America
| | - Preethi L Chandran
- Biochemistry and Molecular Biology Department, College of Medicine, Howard University, Washington, DC, United States of America; Chemical Engineering Department, College of Engineering and Architecture, Howard University, Washington, DC, United States of America.
| |
Collapse
|
30
|
Kitazaki A, Hasegawa T, Asami H, Kohno JY. Chemical denaturation of gas-phase albumin ions studied by photoelectron detachment yield spectroscopy and infrared laser ablation of droplet beams. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
31
|
Lee F, Bae KH, Ng S, Yamashita A, Kurisawa M. Hyaluronic acid-green tea catechin conjugates as a potential therapeutic agent for rheumatoid arthritis. RSC Adv 2021; 11:14285-14294. [PMID: 35423998 PMCID: PMC8697692 DOI: 10.1039/d1ra01491a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/30/2021] [Indexed: 11/21/2022] Open
Abstract
Fibroblast-like synoviocytes are a key effector cell type involved in the pathogenesis of rheumatoid arthritis. The major green tea catechin, epigallocatechin-3-O-gallate (EGCG), has attracted significant interest for rheumatoid arthritis therapy because of its ability to suppress the proliferation and interleukin-6 secretion of synoviocytes. However, therapeutic efficacy of EGCG has been limited by a lack of target cell specificity. Herein we report hyaluronic acid-EGCG (HA-EGCG) conjugates as an anti-arthritic agent that is capable of targeting fibroblast-like synoviocytes via HA-CD44 interactions. These conjugates exhibited superior anti-proliferative and anti-inflammatory activities compared with EGCG under simulated physiological conditions. Near-infrared fluorescence imaging revealed preferential accumulation of the conjugates at inflamed joints in a collagen-induced arthritis rat model, and their anti-arthritic efficacy was investigated by measuring a change in the edema and histopathological scores. Our findings suggest the potential of HA-EGCG conjugates as an anti-arthritic agent for the treatment of rheumatoid arthritis.
Collapse
Affiliation(s)
- Fan Lee
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore +65-6478-9083 +65-6824-7139
| | - Ki Hyun Bae
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore +65-6478-9083 +65-6824-7139
| | - Shengyong Ng
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore +65-6478-9083 +65-6824-7139
| | - Atsushi Yamashita
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore +65-6478-9083 +65-6824-7139
| | - Motoichi Kurisawa
- Institute of Bioengineering and Bioimaging 31 Biopolis Way, The Nanos Singapore 138669 Singapore +65-6478-9083 +65-6824-7139
| |
Collapse
|
32
|
Zheng F, Hou P, Corpstein CD, Xing L, Li T. Multiphysics Modeling and Simulation of Subcutaneous Injection and Absorption of Biotherapeutics: Model Development. Pharm Res 2021; 38:607-624. [PMID: 33811278 DOI: 10.1007/s11095-021-03032-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/16/2021] [Indexed: 01/04/2023]
Abstract
PURPOSE Many monoclonal antibodies (mAbs) are administered via subcutaneous (SC) injection. Local transport and absorption kinetics and mechanisms, however, remain poorly understood. A multiphysics computational model was developed to simulate the injection and absorption processes of a protein solution in the SC tissue. METHODS Quantitative relationships among tissue properties and transport behaviors of an injected solution were described by respective physical laws. SC tissue was treated as a 3-dimensional homogenous, poroelastic medium, in which vasculatures and lymphatic vessels were implicitly treated. Tissue deformation was considered, and interstitial fluid flow was modeled by Darcy's law. Transport of the drug mass was described based on diffusion and advection, which was integrated with tissue mechanics and interstitial fluid dynamics. RESULTS Injection and absorption of albumin and IgG solutions were simulated. Upon injection, a sharp rise in tissue pressure, porosity, and fluid velocity could be observed at the injection tip. Largest tissue deformation appeared at the model surface. Transport of drug mass out of the injection zone was minimal. Absorption by local lymphatics was found to last several weeks. CONCLUSIONS A bottom-up method was developed to simulate drug transport and absorption of protein solutions in skin tissue base on physical principles. The results appear to match experimental observations.
Collapse
Affiliation(s)
- Fudan Zheng
- Department of Industrial and Physical Pharmacy, Purdue University, 525 Stadium Mall Dr., RHPH Building, West Lafayette, Indiana, 47907, USA
| | - Peng Hou
- Department of Industrial and Physical Pharmacy, Purdue University, 525 Stadium Mall Dr., RHPH Building, West Lafayette, Indiana, 47907, USA
| | - Clairissa D Corpstein
- Department of Industrial and Physical Pharmacy, Purdue University, 525 Stadium Mall Dr., RHPH Building, West Lafayette, Indiana, 47907, USA
| | - Lei Xing
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
| | - Tonglei Li
- Department of Industrial and Physical Pharmacy, Purdue University, 525 Stadium Mall Dr., RHPH Building, West Lafayette, Indiana, 47907, USA.
| |
Collapse
|
33
|
Moeinzadeh S, Park Y, Lin S, Yang YP. In-situ stable injectable collagen-based hydrogels for cell and growth factor delivery. MATERIALIA 2021; 15:100954. [PMID: 33367226 PMCID: PMC7751945 DOI: 10.1016/j.mtla.2020.100954] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Here we report development of in-situ stable injectable hydrogels for delivery of cells and growth factors based on two precursors, alginate, and collagen/calcium sulfate (CaSO4). The alg/col hydrogels were shear-thinning, injectable through commercially available needles and stable right after injection. Rheological measurements revealed that pre-crosslinked alg/col hydrogels fully crosslinked at 37°C and that the storage modulus of alg/col hydrogels increased with increasing the collagen content or the concentration of CaSO4. The viscoelastic characteristics and injectability of the alg/col hydrogels were not significantly impacted by the storage of precursor solutions for 28 days. An osteoinductive bone morphogenic protein-2 (BMP-2) loaded into alg/col hydrogels was released in 14 days. Human mesenchymal stem cells (hMSCs) encapsulated in alg/col hydrogels had over 90% viability over 7 days after injection. The DNA content of hMSC-laden alg/col hydrogels increased by 6-37 folds for 28 days, depending on the initial cell density. In addition, hMSCs encapsulated in alg/col hydrogels and incubated in osteogenic medium were osteogenically differentiated and formed a mineralized matrix. Finally, a BMP-2 loaded alg/col hydrogel was used to heal a critical size calvarial bone defect in rats after 8 weeks of injection. The alg/col hydrogel holds great promise in tissue engineering and bioprinting applications.
Collapse
Affiliation(s)
- Seyedsina Moeinzadeh
- Department of Orthopedic Surgery, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA
| | - Youngbum Park
- Department of Orthopedic Surgery, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA
- Department of Prosthodontics, Yonsei University College of Dentistry, Seoul 120-752, Korea
| | - Sien Lin
- Department of Orthopedic Surgery, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA
| | - Yunzhi Peter Yang
- Department of Orthopedic Surgery, Stanford University, 300 Pasteur Drive, Stanford, CA 94305, USA
- Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA94305, USA
- Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, CA94305, USA
| |
Collapse
|
34
|
Unraveling the binding mechanism of an Oxovanadium(IV) - Curcumin complex on albumin, DNA and DNA gyrase by in vitro and in silico studies and evaluation of its hemocompatibility. J Inorg Biochem 2021; 221:111402. [PMID: 33975249 DOI: 10.1016/j.jinorgbio.2021.111402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/09/2021] [Accepted: 02/13/2021] [Indexed: 11/20/2022]
Abstract
An oxovanadium(IV) - curcumin based complex, viz. [VO(cur)(2,2´-bipy)(H2O)] where cur is curcumin and bipy is bipyridine, previously synthesized, has been studied for interaction with albumin and DNA. Fluorescence emission spectroscopy was used to evaluate the interaction of the complex with bovine serum albumin (BSA) and the BSA-binding constant (Kb) was calculated to be 2.56 x 105 M-1, whereas a single great-affinity binding site was revealed. Moreover, the hemocompatibility test demonstrated that the complex presented low hemolytic fraction (mostly below 1%), in all concentrations tested (0-250 μΜ of complex, 5% DMSO) assuring a safe application in interaction with blood. The binding of the complex to DNA was also investigated using absorption, fluorescence, and viscometry methods indicating a binding through a minor groove mode. From competitive studies with ethidium bromide the apparent binding constant value to DNA was estimated to be 4.82 x 106 M-1. Stern-Volmer quenching phenomenon gave a ΚSV constant [1.92 (± 0.05) x 104 M-1] and kq constant [8.33 (± 0.2) x 1011 M-1s-1]. Molecular docking simulations on the crystal structure of BSA, calf thymus DNA, and DNA gyrase, as well as pharmacophore analysis for BSA target, were also employed to study in silico the ability of [VO(cur)(2,2´-bipy)(H2O)] to bind to these target bio-macromolecules and explain the observed in vitro activity.
Collapse
|
35
|
The influence of ion identity and ionic strength on membrane biofouling of a binary protein solution. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117769] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
36
|
Tier-0 protein dynamics of bovine serum albumin: A kinetics and energetics study of the collective domain motions. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2020.138102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
37
|
Facile synthesis of nanogels modified Fe 3O 4@Ag NPs for the efficient adsorption of bovine & human serum albumin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111390. [PMID: 33254996 DOI: 10.1016/j.msec.2020.111390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 07/27/2020] [Accepted: 08/19/2020] [Indexed: 12/14/2022]
Abstract
This article describes the preparation of Fe3O4 nanoparticles and its decoration with a layer of tiny Ag nanoparticles at room temperature. Later on, the synthesized Fe3O4@Ag heterostructures were protected with Silica and finally modified with Poly(N-isopropyl acrylamide) (PNIPA) nanogels through post-synthesis method to get multifunctional (superparamagnetic, plasmonic and thermosensitive) nanocomposite. The structural characteristics of Fe3O4@Ag@SiO2-PNIPA nanogels composite were investigated by instrumental techniques such as Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD) and Vibrating Sample Magnetometer (VSM). The average particles diameter was calculated from XRD data through Scherer formula and it was found as 14 nm. The Fe3O4@Ag@SiO2-PNIPA polymeric composites were assessed for the adsorption of Bovine Serum Albumin (BSA) and Human Serum Albumin (HSA) proteins from aqueous media. The adsorption data of BSA and HSA were best explained by Langmuir isotherm model with maximum adsorption capacities of 322 and 166 (mg/g) respectively showing mono-layer adsorption. The kinetics data for both the proteins were fairly interpreted by pseudo-second-order model. Thermodynamics studies revealed that the adsorption phenomena of BSA and HSA on the surface of Fe3O4@Ag@SiO2-PNIPA nanogels composite are spontaneous and exothermic.
Collapse
|
38
|
Magaz A, Spencer BF, Hardy JG, Li X, Gough JE, Blaker JJ. Modulation of Neuronal Cell Affinity on PEDOT-PSS Nonwoven Silk Scaffolds for Neural Tissue Engineering. ACS Biomater Sci Eng 2020; 6:6906-6916. [PMID: 33320623 DOI: 10.1021/acsbiomaterials.0c01239] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Peripheral nerve injury is a common consequence of trauma with low regenerative potential. Electroconductive scaffolds can provide appropriate cell growth microenvironments and synergistic cell guidance cues for nerve tissue engineering. In the present study, electrically conductive scaffolds were prepared by conjugating poly (3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT-PSS) or dimethyl sulfoxide (DMSO)-treated PEDOT-PSS on electrospun silk scaffolds. Conductance could be tuned by the coating concentration and was further boosted by DMSO treatment. Analogue NG108-15 neuronal cells were cultured on the scaffolds to evaluate neuronal cell growth, proliferation, and differentiation. Cellular viability was maintained on all scaffold groups while showing comparatively better metabolic activity and proliferation than neat silk. DMSO-treated PEDOT-PSS functionalized scaffolds partially outperformed their PEDOT-PSS counterparts. Differentiation assessments suggested that these PEDOT-PSS assembled silk scaffolds could support neurite sprouting, indicating that they show promise to be used as a future platform to restore electrochemical coupling at the site of injury and preserve normal nerve function.
Collapse
Affiliation(s)
- Adrián Magaz
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom.,Institute of Materials Research and Engineering (IMRE), Agency for Science Technology and Research (A*STAR), Singapore 138634 Singapore
| | - Ben F Spencer
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - John G Hardy
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, United Kingdom.,Materials Science Institute, Lancaster University, Lancaster LA1 4YB, United Kingdom
| | - Xu Li
- Institute of Materials Research and Engineering (IMRE), Agency for Science Technology and Research (A*STAR), Singapore 138634 Singapore.,Department of Chemistry, National University of Singapore, Singapore 117543 Singapore
| | - Julie E Gough
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Jonny J Blaker
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom.,Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, Oslo 0317, Norway
| |
Collapse
|
39
|
Fang Y, Yushmanov PV, Furó I. Improved accuracy and precision in electrophoretic NMR experiments. Current control and sample cell design. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2020; 318:106796. [PMID: 32784055 DOI: 10.1016/j.jmr.2020.106796] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/13/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
Electrophoretic NMR has the capacity to provide unique physico-chemical information but is limited by a variety of experimental artifacts, such as thermal convection and electrolytic products in the sample. Here we present some simple modifications to the experimental hardware and protocol that, in a significant number of cases, can much improve experimental accuracy and precision. We show that one can strongly reduce artifacts in a symmetric sample cell with an appropriate feeding of current and with a porous plug suitably inserted. This latter feature requires that the electric field pulses across the sensitive volume are implemented as current-controlled pulses applied to the sample. Measurements with current-controlled pulses have the additional advantage of not requiring calibration with samples of known electrophoretic mobility.
Collapse
Affiliation(s)
- Yuan Fang
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | | | - István Furó
- Division of Applied Physical Chemistry, Department of Chemistry, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden.
| |
Collapse
|
40
|
Salis A, Cappai L, Carucci C, Parsons DF, Monduzzi M. Specific Buffer Effects on the Intermolecular Interactions among Protein Molecules at Physiological pH. J Phys Chem Lett 2020; 11:6805-6811. [PMID: 32787211 DOI: 10.1021/acs.jpclett.0c01900] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BSA and lysozyme molecular motion at pH 7.15 is buffer-specific. Adsorption of buffer ions on protein surfaces modulates the protein surface charge and thus protein-protein interactions. Interactions were estimated by means of the interaction parameter kD obtained from plots of diffusion coefficients at different protein concentrations (Dapp = D0[1 + kDCprotein]) via dynamic light scattering and nuclear magnetic resonance. The obtained results agree with recent findings confirming doubts regarding the validity of the Henderson-Hasselbalch equation, which has traditionally provided a basis for understanding pH buffers of primary importance in solution chemistry, electrochemistry, and biochemistry.
Collapse
Affiliation(s)
- Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari, and Centro NanoBiotecnologie Sardegna (CNBS), Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy
- Unità Operativa University of Cagliari, Cagliari, Italy
| | - Luca Cappai
- Department of Chemical and Geological Sciences, University of Cagliari, and Centro NanoBiotecnologie Sardegna (CNBS), Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy
| | - Cristina Carucci
- Department of Chemical and Geological Sciences, University of Cagliari, and Centro NanoBiotecnologie Sardegna (CNBS), Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy
- Unità Operativa University of Cagliari, Cagliari, Italy
| | - Drew F Parsons
- Discipline of Chemistry and Physics, College of Science, Health, Engineering & Education, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia
| | - Maura Monduzzi
- Department of Chemical and Geological Sciences, University of Cagliari, and Centro NanoBiotecnologie Sardegna (CNBS), Cittadella Universitaria, SS 554 bivio Sestu, 09042 Monserrato (CA), Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Florence, Italy
- Unità Operativa University of Cagliari, Cagliari, Italy
| |
Collapse
|
41
|
Collu M, Carucci C, Salis A. Specific Anion Effects on Lipase Adsorption and Enzymatic Synthesis of Biodiesel in Nonaqueous Media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9465-9471. [PMID: 32640792 DOI: 10.1021/acs.langmuir.0c01330] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Pseudomonas fluorescens lipase (Pfl) was adsorbed on macroporous polypropylene to obtain a heterogeneous biocatalyst. The effect of NaCl concentration and of different 100 mm sodium salts on the Pfl loading and catalytic performance toward biodiesel synthesis via the solvent-free methanolysis of triglycerides was studied. Although lipase adsorption onto polypropylene is governed by hydrophobic interactions, both salt concentration and anion type affect lipase loading. Protein loading decreased along the series: Cl- > SO42- ≈ no salt > Br- > I- > SCN- > F- > AcO-. This nonmonotonic ion-specific trend can be the result of opposite mechanisms occurring during the adsorption step. A similar trend is observed also for triglyceride conversion and biodiesel yield. It is likely that ions affect the microenvironment of the adsorbed lipase by interacting specifically with the hydration water and polypeptide chains, thus affecting enzyme catalysis.
Collapse
Affiliation(s)
- Michela Collu
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Cristina Carucci
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| |
Collapse
|
42
|
Hölzel R, Pethig R. Protein Dielectrophoresis: I. Status of Experiments and an Empirical Theory. MICROMACHINES 2020; 11:E533. [PMID: 32456059 PMCID: PMC7281080 DOI: 10.3390/mi11050533] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 05/20/2020] [Accepted: 05/20/2020] [Indexed: 12/04/2022]
Abstract
The dielectrophoresis (DEP) data reported in the literature since 1994 for 22 different globular proteins is examined in detail. Apart from three cases, all of the reported protein DEP experiments employed a gradient field factor ∇Em2 that is much smaller (in some instances by many orders of magnitude) than the ~4 1021 V2/m3 required, according to current DEP theory, to overcome the dispersive forces associated with Brownian motion. This failing results from the macroscopic Clausius-Mossotti (CM) factor being restricted to the range 1.0 > CM > -0.5. Current DEP theory precludes the protein's permanent dipole moment (rather than the induced moment) from contributing to the DEP force. Based on the magnitude of the β-dispersion exhibited by globular proteins in the frequency range 1 kHz-50 MHz, an empirically derived molecular version of CM is obtained. This factor varies greatly in magnitude from protein to protein (e.g., ~37,000 for carboxypeptidase; ~190 for phospholipase) and when incorporated into the basic expression for the DEP force brings most of the reported protein DEP above the minimum required to overcome dispersive Brownian thermal effects. We believe this empirically-derived finding validates the theories currently being advanced by Matyushov and co-workers.
Collapse
Affiliation(s)
- Ralph Hölzel
- Fraunhofer Institute for Cell Therapy and Immunology, Branch Bioanalytics and Bioprocesses (IZI-BB), Am Mühlenberg 13, 14476 Potsdam-Golm, Germany;
| | - Ronald Pethig
- School of Engineering, Institute for Integrated Micro and Nanosystems, University of Edinburgh, The King’s Buildings, Edinburgh EH9 3JF, UK
| |
Collapse
|
43
|
Martyanov AA, Balabin FA, Dunster JL, Panteleev MA, Gibbins JM, Sveshnikova AN. Control of Platelet CLEC-2-Mediated Activation by Receptor Clustering and Tyrosine Kinase Signaling. Biophys J 2020; 118:2641-2655. [PMID: 32396849 DOI: 10.1016/j.bpj.2020.04.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/06/2020] [Accepted: 04/13/2020] [Indexed: 02/07/2023] Open
Abstract
Platelets are blood cells responsible for vascular integrity preservation. The activation of platelet receptor C-type lectin-like receptor II-type (CLEC-2) could partially mediate the latter function. Although this receptor is considered to be of importance for hemostasis, the rate-limiting steps of CLEC-2-induced platelet activation are not clear. Here, we aimed to investigate CLEC-2-induced platelet signal transduction using computational modeling in combination with experimental approaches. We developed a stochastic multicompartmental computational model of CLEC-2 signaling. The model described platelet activation beginning with CLEC-2 receptor clustering, followed by Syk and Src family kinase phosphorylation, determined by the cluster size. Active Syk mediated linker adaptor for T cell protein phosphorylation and membrane signalosome formation, which resulted in the activation of Bruton's tyrosine kinase, phospholipase and phosphoinositide-3-kinase, calcium, and phosphoinositide signaling. The model parameters were assessed from published experimental data. Flow cytometry, total internal reflection fluorescence and confocal microscopy, and western blotting quantification of the protein phosphorylation were used for the assessment of the experimental dynamics of CLEC-2-induced platelet activation. Analysis of the model revealed that the CLEC-2 receptor clustering leading to the membrane-based signalosome formation is a critical element required for the accurate description of the experimental data. Both receptor clustering and signalosome formation are among the rate-limiting steps of CLEC-2-mediated platelet activation. In agreement with these predictions, the CLEC-2-induced platelet activation, but not activation mediated by G-protein-coupled receptors, was strongly dependent on temperature conditions and cholesterol depletion. Besides, the model predicted that CLEC-2-induced platelet activation results in cytosolic calcium spiking, which was confirmed by single-platelet total internal reflection fluorescence microscopy imaging. Our results suggest a refined picture of the platelet signal transduction network associated with CLEC-2. We show that tyrosine kinase activation is not the only rate-limiting step in CLEC-2-induced activation of platelets. Translocation of receptor-agonist complexes to the signaling region and linker adaptor for T cell signalosome formation in this region are limiting CLEC-2-induced activation as well.
Collapse
Affiliation(s)
- Alexey A Martyanov
- Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Sciences, Moscow, Russia; Dmitry Rogachev National Medical Research Centre of Pediatric Hematology, Oncology and Immunology, Moscow, Russia; Institute for Biochemical Physics, Russian Academy of Sciences, Moscow, Russia; Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
| | - Fedor A Balabin
- Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Sciences, Moscow, Russia; Dmitry Rogachev National Medical Research Centre of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Joanne L Dunster
- Institute for Cardiovascular and Metabolic Research, School of Biological Sciences, Harborne Building, University of Reading, Whiteknights, Reading, United Kingdom
| | - Mikhail A Panteleev
- Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Sciences, Moscow, Russia; Dmitry Rogachev National Medical Research Centre of Pediatric Hematology, Oncology and Immunology, Moscow, Russia; Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia; Faculty of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudnyi, Russia
| | - Jonathan M Gibbins
- Institute for Cardiovascular and Metabolic Research, School of Biological Sciences, Harborne Building, University of Reading, Whiteknights, Reading, United Kingdom
| | - Anastasia N Sveshnikova
- Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Sciences, Moscow, Russia; Dmitry Rogachev National Medical Research Centre of Pediatric Hematology, Oncology and Immunology, Moscow, Russia; Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia; Department of Normal Physiology, Sechenov First Moscow State Medical University, Moscow, Russia.
| |
Collapse
|
44
|
Carucci C, Raccis F, Salis A, Magner E. Specific ion effects on the enzymatic activity of alcohol dehydrogenase fromSaccharomyces cerevisiae. Phys Chem Chem Phys 2020; 22:6749-6754. [DOI: 10.1039/c9cp06800g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The specific activity andVmax, but notKm, of alcohol dehydrogenase fromSaccharomyces cerevisiaeare ion specific.
Collapse
Affiliation(s)
- Cristina Carucci
- Department of Chemical Sciences
- Synthesis and Solid State Pharmaceutical Centre (SSPC) and Bernal Institute
- University of Limerick
- Limerick
- Ireland
| | - Francesco Raccis
- Department of Chemical Sciences
- Synthesis and Solid State Pharmaceutical Centre (SSPC) and Bernal Institute
- University of Limerick
- Limerick
- Ireland
| | - Andrea Salis
- Department of Chemical and Geological Sciences
- University of Cagliari
- CSGI & CNBS
- Cittadella Universitaria
- 09042 Monserrato (CA)
| | - Edmond Magner
- Department of Chemical Sciences
- Synthesis and Solid State Pharmaceutical Centre (SSPC) and Bernal Institute
- University of Limerick
- Limerick
- Ireland
| |
Collapse
|
45
|
Bresolin ITL, Bresolin IRAP, Bueno SMA. Evaluation of Iminodiacetic Acid (IDA) as an Ionogenic Group for Adsorption of IgG 1 Monoclonal Antibodies by Membrane Chromatography. Appl Biochem Biotechnol 2019; 191:810-823. [PMID: 31863350 DOI: 10.1007/s12010-019-03217-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 12/05/2019] [Indexed: 11/29/2022]
Abstract
Iminodiacetic acid (IDA) is one of the chelating ligands most frequently employed in immobilized metal-ion affinity chromatography (IMAC) due to its ability to act as electron-pair donor, forming stable complexes with intermediate and borderline Lewis metal ions (electron acceptor). Thus, IDA can also be employed in ion exchange chromatography to purify positively charged proteins at neutral pH values. This study aimed to evaluate IDA as an ionogenic group (ion exchanger) immobilized on poly (ethylene vinyl alcohol) (PEVA) hollow fiber membranes for immunoglobulin G1 (IgG1) monoclonal antibody (MAb) purification. IDA-PEVA membranes showed considerable promise for MAb purification, since IgG1 was recovered in eluted fractions with traces of contaminants as confirmed by Western blotting and ELISA analysis. Quantification of IgG1 showed that a purity of 94.2% was reached in the elution step. Breakthrough curve and batch adsorption experiments showed that the MAb dynamic binding capacity (DBC) of 3.10 mg g-1 and the maximum adsorption capacity of 70 mg g-1 were of the same order of magnitude as those found in the literature. The results obtained showed that the IDA-PEVA hollow fiber membrane could be a powerful adsorbent for integrating large-scale processes for purification of MAb from cell culture supernatant.
Collapse
Affiliation(s)
| | | | - Sônia Maria Alves Bueno
- School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, 13083-970, Brazil
| |
Collapse
|
46
|
Zhang C, Parada GA, Zhao X, Chen Z. Probing Surface Hydration and Molecular Structure of Zwitterionic and Polyacrylamide Hydrogels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13292-13300. [PMID: 31553882 DOI: 10.1021/acs.langmuir.9b02544] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A hydrogel is a hydrophilic cross-linked polymer network which can contain a large amount of water. Hydrogels with distinguished interfacial physical toughness were analyzed for their potential application as antifouling coating materials, utilizing sum frequency generation (SFG) spectroscopy as the interfacial analytical technique. The surface structures of one sulfobetaine (SBMA) zwitterionic hydrogel (ZWHG) and two polysaccharide hydrogels (PHGs) were probed in air; their interfacial structures with silica were examined using SFG in water and protein solutions, respectively. Both ZWHG and PHGs interfaces in water were dominated by strongly hydrogen-bonded water molecules, but the bonding strength associated with ZWHG was much stronger. Although all hydrogels experienced interfacial change in the presence of protein solutions, after cleaning, the zwitterionic hydrogel interface recovered almost completely while the other two hydrogels were subject to irreversible protein adsorption. Additionally, orientational analysis of ZWHG methyl groups in water was conducted and related to the superior hydrogen-bonding strength of water molecules at the ZWHG interface. The interfacial structures of hydrogel materials probed by SFG can be correlated to their antifouling properties. This research highlighted the critical role that hydrogen-bonding strength of interfacial water molecules play for antifouling applications.
Collapse
Affiliation(s)
- Chengcheng Zhang
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
| | - German Alberto Parada
- Department of Chemical Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
| | - Xuanhe Zhao
- Department of Mechanic Engineering , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
| | - Zhan Chen
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
| |
Collapse
|
47
|
Adachi T, Tsujimura S. Effects of electrolyte on the mediated electrocatalytic glucose oxidation reaction catalyzed by flavin adenine dinucleotide glucose dehydrogenase. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
48
|
Lopez A, Liu J. Fluorescence Polarization for Probing DNA Adsorption by Nanomaterials and Fluorophore/DNA Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9954-9961. [PMID: 31271290 DOI: 10.1021/acs.langmuir.9b01678] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fluorescence polarization (FP) is attractive for measuring binding interactions and has been recently used to study DNA adsorption on nanomaterials. Since most nanomaterials are strong fluorescence quenchers, correlations among adsorption efficiency, quenching efficiency, and FP need to be interpreted carefully. In this work, carboxyfluorescein (FAM)-labeled DNA oligonucleotides were studied under various quenching conditions. First, quenching was induced by lowering the pH, taking advantage of the fact that FAM is almost nonfluorescent at a pH below 4. Strong interactions were observed between the FAM label and polyadenine DNA, as judged by the increased FP at low pH, while FAM-labeled polythymine DNA was less affected by the pH. Comparisons were also performed with FAM-labeled poly(ethylene glycol) and bovine serum albumin. An equation was derived to calculate the effect of fluorescence quenching and DNA adsorption by nanomaterials. For strongly quenching nanomaterials, such as graphene oxide, DNA adsorption alone does not change the measured FP. Light scattering and weak fluorescence from graphene oxide increase FP in these cases. For comparison, a strongly adsorbing but weak quenching material, Y2O3, was also studied and the result was consistent with a normal binding reaction. Overall, FP is a powerful technique for binding and adsorption assays, but quenched samples need to be interpreted with care.
Collapse
Affiliation(s)
- Anand Lopez
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology , University of Waterloo , Waterloo , Ontario N2L 3G1 , Canada
| |
Collapse
|
49
|
Parsons DF, Salis A. A thermodynamic correction to the theory of competitive chemisorption of ions at surface sites with nonelectrostatic physisorption. J Chem Phys 2019; 151:024701. [DOI: 10.1063/1.5096237] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Drew F. Parsons
- College of Science, Health, Engineering & Education, Murdoch University, 90 South St., Murdoch, WA 6150, Australia
| | - Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Unità Operativa Univ. Cagliari, Italy and Centro NanoBiotecnologie Sardegna (CNBS), Unità Operativa Univ. Cagliari,Italy
| |
Collapse
|
50
|
Gregory KP, Webber GB, Wanless EJ, Page AJ. Lewis Strength Determines Specific-Ion Effects in Aqueous and Nonaqueous Solvents. J Phys Chem A 2019; 123:6420-6429. [DOI: 10.1021/acs.jpca.9b04004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kasimir P. Gregory
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Grant B. Webber
- School of Engineering, The University of Newcastle, Callaghan, New South Wales 2308, Australia
- Priority Research Centre for Advanced Particle Processing and Transport, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Erica J. Wanless
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia
- Priority Research Centre for Advanced Particle Processing and Transport, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Alister J. Page
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| |
Collapse
|