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Aliev TA, Lavrentev FV, Dyakonov AV, Diveev DA, Shilovskikh VV, Skorb EV. Electrochemical platform for detecting Escherichia coli bacteria using machine learning methods. Biosens Bioelectron 2024; 259:116377. [PMID: 38776798 DOI: 10.1016/j.bios.2024.116377] [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: 02/29/2024] [Revised: 04/24/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024]
Abstract
We present an electrochemical platform designed to reduce time of Escherichia coli bacteria detection from 24 to 48-h to 30 min. The presented approach is based on a system which includes gallium-indium (eGaIn) alloy to provide conductivity and a hydrogel system to preserve bacteria and their metabolic species during the analysis. The work is dedicated to accurate and fast detection of Escherichia coli bacteria in different environments with the supply of machine learning methods. Electrochemical data obtained during the analysis is processed via multilayer perceptron model to identify i.e. predict bacterial concentration in the samples. The performed approach provides the effectiveness of bacteria identification in the range of 102-109 colony forming units per ml with the average accuracy of 97%. The proposed bioelectrochemical system combined with machine learning model is prospective for food analysis, agriculture, biomedicine.
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Affiliation(s)
- Timur A Aliev
- Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg, 191002, Russia
| | - Filipp V Lavrentev
- Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg, 191002, Russia
| | - Alexandr V Dyakonov
- Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg, 191002, Russia
| | - Daniil A Diveev
- Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg, 191002, Russia
| | - Vladimir V Shilovskikh
- Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg, 191002, Russia; Saint Petersburg State University, Universitetskaya Embankment 7-9, Saint-Petersburg, 199034, Russia
| | - Ekaterina V Skorb
- Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg, 191002, Russia.
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Chen J, Luo J, Feng J, Wang Y, Lv H, Zhou Y. Spatiotemporal controlled released hydrogels for multi-system regulated bone regeneration. J Control Release 2024; 372:846-861. [PMID: 38955252 DOI: 10.1016/j.jconrel.2024.06.065] [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: 04/26/2024] [Revised: 06/11/2024] [Accepted: 06/28/2024] [Indexed: 07/04/2024]
Abstract
Bone defect is one of the urgent problems to be solved in clinics, and it is very important to construct efficient scaffold materials to facilitate bone tissue regeneration. Hydrogels, characterized by their unique three-dimensional network structure, serve as excellent biological scaffold materials. Their internal pores are capable of loading osteogenic drugs to expedite bone formation. The rate and quality of new bone formation are intimately linked with immune regulation and vascular remodeling. The strategic sequential release of drugs to balance inflammation and regulate vascular remodeling is crucial for initiating the osteogenic process. Through the design of hydrogel microstructures, it is possible to achieve sequential drug release and the drug action time can be prolonged, thereby catering to the multi-systemic collaborative regulation needs of osteosynthesis. The drug release rate within the hydrogel is governed by swelling control systems, physical control systems, chemical control systems, and environmental control systems. Utilizing these control systems to design hydrogel materials capable of multi-drug delivery optimizes the construction of the bone microenvironment. Consequently, this facilitates the spatiotemporal controlled released of drugs, promoting bone tissue regeneration. This paper reviews the principles of the controlled release system of various sustained-release hydrogels and the advancements in research on hydrogel multi-drug delivery systems for bone tissue regeneration.
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Affiliation(s)
- Jingxia Chen
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Jiaxin Luo
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Jian Feng
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Yihan Wang
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Huixin Lv
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China.
| | - Yanmin Zhou
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun 130021, China; Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China.
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de Ávila Gonçalves S, da Fonsêca JHL, d'Ávila MA, Vieira RP. Synthesis of thermally and pH-responsive poly(2-(dimethylamino)ethyl methacrylate)-based hydrogel reinforced with cellulose nanocrystals for sustained drug release. Int J Biol Macromol 2024; 277:134168. [PMID: 39067729 DOI: 10.1016/j.ijbiomac.2024.134168] [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: 04/06/2024] [Revised: 07/15/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
Hydrogels are widely employed in biomedical applications due to their high swelling potential, tailored mechanical properties, biocompatibility, and ability to incorporate drugs to modify their release behavior. This study explored the synthesis of dual stimuli-responsive composite hydrogels by combining poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) with 4, 8, and 12 % (w/w) of cellulose nanocrystals (CNC) through in-situ free-radical polymerization, modifying their properties for topical anti-inflammatory release. Although PDMAEMA-based hydrogels have been known for their responsiveness to pH and temperature stimuli, which are useful for modulating the release profile of drugs, their use as a matrix for anti-inflammatory topical applications remains unexplored. Thus, a comprehensive analysis of CNC concentration's impact on PDMAEMA-based hydrogel structure and physicochemical properties is provided. The incorporation of ibuprofen as an anti-inflammatory model was assessed, providing insights into the potential of these composite hydrogels for sustained drug delivery applications. Overall, the hydrogels exhibited homogenous CNC dispersion, with gel fraction higher than 70 % and ibuprofen load higher than 90 %. The rise in CNC concentration led to an increase hydrogel stiffness. Finally, the CNC incorporation also modified the ibuprofen release to a more sustained profile, following the Peppas-Sahlin model, which may be attractive for developing pharmaceutical devices for different therapeutical scenarios.
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Affiliation(s)
- Sayeny de Ávila Gonçalves
- Department of Bioprocess and Materials Engineering, School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
| | - Jéssica Heline Lopes da Fonsêca
- Department of Manufacturing and Materials Engineering, School of Mechanical Engineering, University of Campinas (UNICAMP), Campinas, Brazil
| | - Marcos Akira d'Ávila
- Department of Manufacturing and Materials Engineering, School of Mechanical Engineering, University of Campinas (UNICAMP), Campinas, Brazil
| | - Roniérik Pioli Vieira
- Department of Bioprocess and Materials Engineering, School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
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Keskin-Erdogan Z, Mandakhbayar N, Jin GS, Li YM, Chau DYS, Day RM, Kim HW, Knowles JC. Lithium-loaded GelMA-Phosphate glass fibre constructs: Implications for astrocyte response. J Biomed Mater Res A 2024; 112:1070-1082. [PMID: 38400701 DOI: 10.1002/jbm.a.37686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024]
Abstract
Combinations of different biomaterials with their own advantages as well as functionalization with other components have long been implemented in tissue engineering to improve the performance of the overall material. Biomaterials, particularly hydrogel platforms, have shown great potential for delivering compounds such as drugs, growth factors, and neurotrophic factors, as well as cells, in neural tissue engineering applications. In central the nervous system, astrocyte reactivity and glial scar formation are significant and complex challenges to tackle for neural and functional recovery. GelMA hydrogel-based tissue constructs have been developed in this study and combined with two different formulations of phosphate glass fibers (PGFs) (with Fe3+ or Ti2+ oxide) to impose physical and mechanical cues for modulating astrocyte cell behavior. This study was also aimed at investigating the effects of lithium-loaded GelMA-PGFs hydrogels in alleviating astrocyte reactivity and glial scar formation offering novel perspectives for neural tissue engineering applications. The rationale behind introducing lithium is driven by its long-proven therapeutic benefits in mental disorders, and neuroprotective and pronounced anti-inflammatory properties. The optimal concentrations of lithium and LPS were determined in vitro on primary rat astrocytes. Furthermore, qPCR was conducted for gene expression analysis of GFAP and IL-6 markers on primary astrocytes cultured 3D into GelMA and GelMA-PGFs hydrogels with and without lithium and in vitro stimulated with LPS for astrocyte reactivity. The results suggest that the combination of bioactive phosphate-based glass fibers and lithium loading into GelMA structures may impact GFAP expression and early IL-6 expression. Furthermore, GelMA-PGFs (Fe) constructs have shown improved performance in modulating glial scarring over GFAP regulation.
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Affiliation(s)
- Zalike Keskin-Erdogan
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, London, UK
- Chemical Engineering Department, Imperial College London, London, UK
| | - Nandin Mandakhbayar
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - Gang Shi Jin
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - Yu-Meng Li
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - David Y S Chau
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, London, UK
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea
| | - Richard M Day
- Centre for Precision Healthcare, UCL Division of Medicine, University College London, London, UK
| | - Hae-Won Kim
- Chemical Engineering Department, Imperial College London, London, UK
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea
- Department of Nanobiomedical Science and BK21 NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Republic of Korea
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, London, UK
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea
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Lizana-Vasquez GD, Mendez-Vega J, Cappabianca D, Saha K, Torres-Lugo M. In vitro encapsulation and expansion of T and CAR-T cells using 3D synthetic thermo-responsive matrices. RSC Adv 2024; 14:13734-13747. [PMID: 38681842 PMCID: PMC11046447 DOI: 10.1039/d4ra01968g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 04/17/2024] [Indexed: 05/01/2024] Open
Abstract
Suspension cell culture and rigid commercial substrates are the most common methods to clinically manufacture therapeutic CAR-T cells ex vivo. However, suspension culture and nano/micro-scale commercial substrates poorly mimic the microenvironment where T cells naturally develop, leading to profound impacts on cell proliferation and phenotype. To overcome this major challenge, macro-scale substrates can be used to emulate that environment with higher precision. This work employed a biocompatible thermo-responsive material with tailored mechanical properties as a potential synthetic macro-scale scaffold to support T cell encapsulation and culture. Cell viability, expansion, and phenotype changes were assessed to study the effect of two thermo-responsive hydrogel materials with stiffnesses of 0.5 and 17 kPa. Encapsulated Pan-T and CAR-T cells were able to grow and physically behave similar to the suspension control. Furthermore, matrix stiffness influenced T cell behavior. In the softer polymer, T cells had higher activation, differentiation, and maturation after encapsulation obtaining significant cell numbers. Even when terpolymer encapsulation affected the CAR-T cell viability and expansion, CAR T cells expressed favorable phenotypical profiles, which was supported with cytokines and lactate production. These results confirmed the biocompatibility of the thermo-responsive hydrogels and their feasibility as a promising 3D macro-scale scaffold for in vitro T cell expansion that could potentially be used for cell manufacturing process.
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Affiliation(s)
- Gaby D Lizana-Vasquez
- Deparment of Chemical Engineering, University of Puerto Rico-Mayagüez Road 108 Km. 1.0 Bo. Miradero. P.O. Box 9046 Mayagüez 00681-9046 Puerto Rico USA +1 787 832 4040 Ext. 2585
| | - Janet Mendez-Vega
- Deparment of Chemical Engineering, University of Puerto Rico-Mayagüez Road 108 Km. 1.0 Bo. Miradero. P.O. Box 9046 Mayagüez 00681-9046 Puerto Rico USA +1 787 832 4040 Ext. 2585
| | - Dan Cappabianca
- Department of Biomedical Engineering, University of Wisconsin-Madison Madison Wisconsin USA
| | - Krishanu Saha
- Department of Biomedical Engineering, University of Wisconsin-Madison Madison Wisconsin USA
| | - Madeline Torres-Lugo
- Deparment of Chemical Engineering, University of Puerto Rico-Mayagüez Road 108 Km. 1.0 Bo. Miradero. P.O. Box 9046 Mayagüez 00681-9046 Puerto Rico USA +1 787 832 4040 Ext. 2585
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Landi G, Pagano S, Granata V, Avallone G, La Notte L, Palma AL, Sdringola P, Puglisi G, Barone C. Regeneration and Long-Term Stability of a Low-Power Eco-Friendly Temperature Sensor Based on a Hydrogel Nanocomposite. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:283. [PMID: 38334553 PMCID: PMC10856540 DOI: 10.3390/nano14030283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/24/2024] [Accepted: 01/28/2024] [Indexed: 02/10/2024]
Abstract
A water-processable and low-cost nanocomposite material, based on gelatin and graphene, has been used to fabricate an environmentally friendly temperature sensor. Demonstrating a temperature-dependent open-circuit voltage between 260 and 310 K, the sensor effectively detects subzero ice formation. Notably, it maintains a constant temperature sensitivity of approximately -19 mV/K over two years, showcasing long-term stability. Experimental evidence demonstrates the efficient regeneration of aged sensors by injecting a few drops of water at a temperature higher than the gelation point of the hydrogel nanocomposite. The real-time monitoring of the electrical characteristics during the hydration reveals the initiation of the regeneration process at the gelation point (~306 K), resulting in a more conductive nanocomposite. These findings, together with a fast response and low power consumption in the range of microwatts, underscore the potential of the eco-friendly sensor for diverse practical applications in temperature monitoring and environmental sensing. Furthermore, the successful regeneration process significantly enhances its sustainability and reusability, making a valuable contribution to environmentally conscious technologies.
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Affiliation(s)
- Giovanni Landi
- ENEA, Portici Research Center, Piazzale Enrico Fermi, Località Granatello, 80055 Portici, Italy;
| | - Sergio Pagano
- Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, 84084 Fisciano, Italy; (V.G.); (G.A.)
- INFN Gruppo Collegato di Salerno, Università degli Studi di Salerno, 84084 Fisciano, Italy
- CNR-SPIN, Università degli Studi di Salerno, 84084 Fisciano, Italy
| | - Veronica Granata
- Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, 84084 Fisciano, Italy; (V.G.); (G.A.)
- INFN Gruppo Collegato di Salerno, Università degli Studi di Salerno, 84084 Fisciano, Italy
| | - Guerino Avallone
- Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, 84084 Fisciano, Italy; (V.G.); (G.A.)
- INFN Gruppo Collegato di Salerno, Università degli Studi di Salerno, 84084 Fisciano, Italy
| | - Luca La Notte
- ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (L.L.N.); (A.L.P.); (P.S.); (G.P.)
| | - Alessandro Lorenzo Palma
- ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (L.L.N.); (A.L.P.); (P.S.); (G.P.)
| | - Paolo Sdringola
- ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (L.L.N.); (A.L.P.); (P.S.); (G.P.)
| | - Giovanni Puglisi
- ENEA, Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy; (L.L.N.); (A.L.P.); (P.S.); (G.P.)
| | - Carlo Barone
- Dipartimento di Fisica “E.R. Caianiello”, Università degli Studi di Salerno, 84084 Fisciano, Italy; (V.G.); (G.A.)
- INFN Gruppo Collegato di Salerno, Università degli Studi di Salerno, 84084 Fisciano, Italy
- CNR-SPIN, Università degli Studi di Salerno, 84084 Fisciano, Italy
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