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Parveen S, Basu M, Chowdhury P, Dhara T, DasGupta S, Das S, Dasgupta S. Surface modification of polydimethylsiloxane by the cataractous eye protein isolate. Int J Biol Macromol 2024; 260:129470. [PMID: 38237817 DOI: 10.1016/j.ijbiomac.2024.129470] [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: 11/01/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/27/2024]
Abstract
Polydimethylsiloxane (PDMS), even though widely used in microfluidic applications, its hydrophobic nature restricts its utility in some cases. To address this, PDMS may be used in conjunction with a hydrophilic material. Herein, the PDMS surface is modified by plasma treatment followed by cross-linking with the cataractous eye protein isolate (CEPI). CEPI-PDMS composites are prepared at three pH and the effects of CEPI on the chemical, physical, and electrical properties of PDMS are extensively investigated. The cross-linking between PDMS and the protein are confirmed by FTIR, and the contact angle measurements indicate the improved hydrophilic nature of the composite films as compared to PDMS. Atomic Force Microscopy results demonstrate that the surface roughness is enhanced by the incorporation of the protein and is a function of the pH. The effective elastic modulus of the composites is improved by the incorporation of protein into the PDMS matrix. Measurements of the dielectric properties of these composites indicate that they behave as capacitors at lower frequency range while demonstrating resistive characteristics at higher frequency. These composites provide preliminary ideas in developing flexible devices for potential applications in diverse areas such as energy storage materials, and thermo-elective wireless switching devices.
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Affiliation(s)
- Sultana Parveen
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Mainak Basu
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Prasun Chowdhury
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Trina Dhara
- Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Sunando DasGupta
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India; Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
| | - Soumen Das
- Advanced Technology Development Center, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India; School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, India
| | - Swagata Dasgupta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India.
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Nan M, Darmawan BA, Go G, Zheng S, Lee J, Kim S, Lee T, Choi E, Park JO, Bang D. Wearable Localized Surface Plasmon Resonance-Based Biosensor with Highly Sensitive and Direct Detection of Cortisol in Human Sweat. BIOSENSORS 2023; 13:184. [PMID: 36831950 PMCID: PMC9953546 DOI: 10.3390/bios13020184] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/11/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Wearable biosensors have the potential for developing individualized health evaluation and detection systems owing to their ability to provide continuous real-time physiological data. Among various wearable biosensors, localized surface plasmon resonance (LSPR)-based wearable sensors can be versatile in various practical applications owing to their sensitive interactions with specific analytes. Understanding and analyzing endocrine responses to stress is particularly crucial for evaluating human performance, diagnosing stress-related diseases, and monitoring mental health, as stress takes a serious toll on physiological health and psychological well-being. Cortisol is an essential biomarker of stress because of the close relationship between cortisol concentration in the human body and stress level. In this study, a flexible LSPR biosensor was manufactured to detect cortisol levels in the human body by depositing gold nanoparticle (AuNP) layers on a 3-aminopropyltriethoxysilane (APTES)-functionalized poly (dimethylsiloxane) (PDMS) substrate. Subsequently, an aptamer was immobilized on the surface of the LSPR substrate, enabling highly sensitive and selective cortisol capture owing to its specific cortisol recognition. The biosensor exhibited excellent detection ability in cortisol solutions of various concentrations ranging from 0.1 to 1000 nM with a detection limit of 0.1 nM. The flexible LSPR biosensor also demonstrated good stability under various mechanical deformations. Furthermore, the cortisol levels of the flexible LSPR biosensor were also measured in the human epidermis before and after exercise as well as in the morning and afternoon. Our biosensors, which combine easily manufactured flexible sensors with sensitive cortisol-detecting molecules to measure human stress levels, could be versatile candidates for human-friendly products.
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Affiliation(s)
- Minghui Nan
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
- Robot Research Initiative, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Bobby Aditya Darmawan
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
| | - Gwangjun Go
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
| | - Shirong Zheng
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
- School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Junhyeok Lee
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
- School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Seokjae Kim
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
- School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Taeksu Lee
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
| | - Eunpyo Choi
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
- Robot Research Initiative, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
- School of Mechanical Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
- College of AI Convergence, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Jong-Oh Park
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
| | - Doyeon Bang
- Korea Institute of Medical Microrobotics, 43-26 Cheomdangwagi-ro, Buk-gu, Gwangju 61011, Republic of Korea
- Robot Research Initiative, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
- College of AI Convergence, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
- Graduate School of Data Science, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
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Hosseini M, Dalley AJ, Shafiee A. Convergence of Biofabrication Technologies and Cell Therapies for Wound Healing. Pharmaceutics 2022; 14:pharmaceutics14122749. [PMID: 36559242 PMCID: PMC9785239 DOI: 10.3390/pharmaceutics14122749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/01/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Cell therapy holds great promise for cutaneous wound treatment but presents practical and clinical challenges, mainly related to the lack of a supportive and inductive microenvironment for cells after transplantation. Main: This review delineates the challenges and opportunities in cell therapies for acute and chronic wounds and highlights the contribution of biofabricated matrices to skin reconstruction. The complexity of the wound healing process necessitates the development of matrices with properties comparable to the extracellular matrix in the skin for their structure and composition. Over recent years, emerging biofabrication technologies have shown a capacity for creating complex matrices. In cell therapy, multifunctional material-based matrices have benefits in enhancing cell retention and survival, reducing healing time, and preventing infection and cell transplant rejection. Additionally, they can improve the efficacy of cell therapy, owing to their potential to modulate cell behaviors and regulate spatiotemporal patterns of wound healing. CONCLUSION The ongoing development of biofabrication technologies promises to deliver material-based matrices that are rich in supportive, phenotype patterning cell niches and are robust enough to provide physical protection for the cells during implantation.
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Affiliation(s)
- Motaharesadat Hosseini
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia
- ARC Industrial Transformation Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D), Queensland University of Technology, Brisbane, QLD 4059, Australia
| | - Andrew J. Dalley
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
- Royal Brisbane and Women’s Hospital, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
| | - Abbas Shafiee
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
- Royal Brisbane and Women’s Hospital, Metro North Hospital and Health Service, Brisbane, QLD 4029, Australia
- Frazer Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD 4102, Australia
- Correspondence: or
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Erenay B, Sağlam ASY, Garipcan B, Jandt KD, Odabaş S. Bone surface mimicked PDMS membranes stimulate osteoblasts and calcification of bone matrix. BIOMATERIALS ADVANCES 2022; 142:213170. [PMID: 36341745 DOI: 10.1016/j.bioadv.2022.213170] [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: 08/04/2022] [Revised: 10/06/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Cellular microenvironments play a crucial role in cell behavior. In addition to the biochemical cues present in the microenvironments, biophysical and biomechanical properties on surfaces have an impact on cellular functionality and eventually cellular fate. Effects of surface topography on cell behavior are being studied extensively in the literature. However, these studies often try to replicate topographical features of tissue surfaces by using techniques such as chemical etching, photolithography, and electrospinning, which may result in the loss of crucial micro- and nano- features on the tissue surfaces such as bone. This study investigates the topographical effects of bone surface by transferring its surface features onto polydimethylsiloxane (PDMS) membranes using soft lithography from a bovine femur. Our results have shown that major features on bone surfaces were successfully transferred onto PDMS using soft lithography. Osteoblast proliferation and calcification of bone matrix have significantly increased along with osteoblast-specific differentiation and maturation markers such as osteocalcin (OSC), osterix (OSX), collagen type I alpha 1 chain (COL1A1), and alkaline phosphatase (ALP) on bone surface mimicked (BSM) PDMS membranes in addition to a unidirectional alignment of osteoblast cells compared to plain PDMS surfaces. This presented bone surface mimicking method can provide a versatile native-like platform for further investigation of intracellular pathways regarding osteoblast growth and differentiation.
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Affiliation(s)
- Berkay Erenay
- Biomimetics and Bioinspired Biomaterials Research Laboratory, Institute of Biomedical Engineering, Boğaziçi University, 34684, Turkey
| | - Atiye Seda Yar Sağlam
- Department of Medical Biology and Genetics, Faculty of Medicine, Gazi University, Besevler, Ankara 06500, Turkey
| | - Bora Garipcan
- Biomimetics and Bioinspired Biomaterials Research Laboratory, Institute of Biomedical Engineering, Boğaziçi University, 34684, Turkey
| | - Klaus D Jandt
- Chair of Materials Science, Otto Schott Institute of Materials Research, Friedrich Schiller University, Jena 07743, Germany.
| | - Sedat Odabaş
- Biomaterials and Tissue Engineering Laboratory (BteLAB), Faculty of Science, Department of Chemistry, Ankara University, 06560, Turkey; Interdisciplinary Research Unit for Advanced Materials (INTRAM), Ankara University, Ankara 06560, Turkey.
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Azizipour N, Avazpour R, Sawan M, Ajji A, H Rosenzweig D. Surface Optimization and Design Adaptation toward Spheroid Formation On-Chip. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22093191. [PMID: 35590879 DOI: 10.1039/d2sd00004k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/07/2022] [Accepted: 04/19/2022] [Indexed: 05/27/2023]
Abstract
Spheroids have become an essential tool in preclinical cancer research. The uniformity of spheroids is a critical parameter in drug test results. Spheroids form by self-assembly of cells. Hence, the control of homogeneity of spheroids in terms of size, shape, and density is challenging. We developed surface-optimized polydimethylsiloxane (PDMS) biochip platforms for uniform spheroid formation on-chip. These biochips were surface modified with 10% bovine serum albumin (BSA) to effectively suppress cell adhesion on the PDMS surface. These surface-optimized platforms facilitate cell self-aggregations to produce homogenous non-scaffold-based spheroids. We produced uniform spheroids on these biochips using six different established human cell lines and a co-culture model. Here, we observe that the concentration of the BSA is important in blocking cell adhesion to the PDMS surfaces. Biochips treated with 3% BSA demonstrated cell repellent properties similar to the bare PDMS surfaces. This work highlights the importance of surface modification on spheroid production on PDMS-based microfluidic devices.
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Affiliation(s)
- Neda Azizipour
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada
| | - Rahi Avazpour
- Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada
| | - Mohamad Sawan
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada
- Polystim Neurotech Laboratory, Electrical Engineering Department, Polytechnique Montréal, Montréal, QC H3T 1J4, Canada
- CenBRAIN Laboratory, Westlake Institute for Advanced Study, School of Engineering, Westlake University, Hangzhou 310024, China
| | - Abdellah Ajji
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada
- The Research Center for High Performance Polymer and Composite Systems, Chemical Engineering Department, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada
| | - Derek H Rosenzweig
- Department of Surgery, McGill University, Montréal, QC H3G 1A4, Canada
- Injury, Repair and Recovery Program, Research Institute of McGill University Health Centre, Montréal, QC H3H 2R9, Canada
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Azizipour N, Avazpour R, Sawan M, Ajji A, H. Rosenzweig D. Surface Optimization and Design Adaptation toward Spheroid Formation On-Chip. SENSORS (BASEL, SWITZERLAND) 2022; 22:3191. [PMID: 35590879 PMCID: PMC9104470 DOI: 10.3390/s22093191] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/07/2022] [Accepted: 04/19/2022] [Indexed: 12/17/2022]
Abstract
Spheroids have become an essential tool in preclinical cancer research. The uniformity of spheroids is a critical parameter in drug test results. Spheroids form by self-assembly of cells. Hence, the control of homogeneity of spheroids in terms of size, shape, and density is challenging. We developed surface-optimized polydimethylsiloxane (PDMS) biochip platforms for uniform spheroid formation on-chip. These biochips were surface modified with 10% bovine serum albumin (BSA) to effectively suppress cell adhesion on the PDMS surface. These surface-optimized platforms facilitate cell self-aggregations to produce homogenous non-scaffold-based spheroids. We produced uniform spheroids on these biochips using six different established human cell lines and a co-culture model. Here, we observe that the concentration of the BSA is important in blocking cell adhesion to the PDMS surfaces. Biochips treated with 3% BSA demonstrated cell repellent properties similar to the bare PDMS surfaces. This work highlights the importance of surface modification on spheroid production on PDMS-based microfluidic devices.
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Affiliation(s)
- Neda Azizipour
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada; (N.A.); (M.S.)
| | - Rahi Avazpour
- Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada;
| | - Mohamad Sawan
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada; (N.A.); (M.S.)
- Polystim Neurotech Laboratory, Electrical Engineering Department, Polytechnique Montréal, Montréal, QC H3T 1J4, Canada
- CenBRAIN Laboratory, Westlake Institute for Advanced Study, School of Engineering, Westlake University, Hangzhou 310024, China
| | - Abdellah Ajji
- Institut de Génie Biomédical, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada; (N.A.); (M.S.)
- The Research Center for High Performance Polymer and Composite Systems, Chemical Engineering Department, Polytechnique Montréal, Montréal, QC H3C 3A7, Canada
| | - Derek H. Rosenzweig
- Department of Surgery, McGill University, Montréal, QC H3G 1A4, Canada
- Injury, Repair and Recovery Program, Research Institute of McGill University Health Centre, Montréal, QC H3H 2R9, Canada
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Zhou W, Wang X, Li Z, Zhao H, Weir MD, Cheng L, Xu HHK, Huang X. Novel dual-functional implants via oxygen non-thermal plasma and quaternary ammonium to promote osteogenesis and combat infections. Dent Mater 2021; 38:169-182. [PMID: 34924200 DOI: 10.1016/j.dental.2021.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/08/2021] [Accepted: 12/02/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Implant-related infections are a primary reason for implant failures that affect millions of patients. It is of paramount importance to develop novel implants that possess the dual functions of osteogenesis-promotion and antibacterial activity. The objectives of this study were to: (1) develop novel dual-functional titanium (Ti) implants by combining oxygen non-thermal plasma and covalent bonding of antibacterial organosilicon quaternary ammonium monomers; (2) investigate the physicochemical properties, bioactivity and antibacterial effects of the modified implants for the first time. METHODS Surface characteristics of the modified Ti surfaces were tested. Adherence and viability of rat bone marrow-derived stem cells (rBMSCs) on the surface were evaluated. Metabolic activity of biofilm on the surfaces were measured. The stability of the dual-function after 5000 thermal cycles was also evaluated. RESULTS The presence of chemical bonding between Ti and organosilicon monomers demonstrated covalent immobilization of the antibacterial agents. The water contact angle of the treated Ti surfaces decreased from 70.98 ± 3.68° to 59.86 ± 4.91°. The adhesion and proliferation of rBMSCs on the modified Ti were increased by 40%, compared to control group (P < 0.05). The metabolic level of biofilms on modified Ti were reduced by more than half, compared to control (P < 0.05). The modified Ti implants exhibited cell-promotion and antibacterial stability after thermal cycles. SIGNIFICANCE The new dual-functional Ti implant is promising to promote osteogenesis while simultaneously preventing infections. Furthermore, the novel surface modification and processing methods have applicability to enhancing a wide range of other implants to improve bioactivity and combat infections.
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Affiliation(s)
- Wen Zhou
- Postdoctoral workstation & Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China; Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, 21201, USA; State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, National Clinical Research Center for Oral Diseases & Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xianlong Wang
- Department of Bioinformatics, Fujian Key Laboratory of Medical Bioinformatics, Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, 350122 Fujian, China
| | - Zhen Li
- Postdoctoral workstation & Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China
| | - Hongyan Zhao
- Postdoctoral workstation & Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, 21201, USA
| | - Lei Cheng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, National Clinical Research Center for Oral Diseases & Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China.
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, 21201, USA.
| | - Xiaojing Huang
- Postdoctoral workstation & Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou 350002, China.
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Razavi M, Wang J, Thakor AS. Localized drug delivery graphene bioscaffolds for cotransplantation of islets and mesenchymal stem cells. SCIENCE ADVANCES 2021; 7:eabf9221. [PMID: 34788097 PMCID: PMC8597999 DOI: 10.1126/sciadv.abf9221] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 09/28/2021] [Indexed: 06/01/2023]
Abstract
In the present work, we developed, characterized, and tested an implantable graphene bioscaffold which elutes dexamethasone (Dex) that can accommodate islets and adipose tissue–derived mesenchymal stem cells (AD-MSCs). In vitro studies demonstrated that islets in graphene–0.5 w/v% Dex bioscaffolds had a substantial higher viability and function compared to islets in graphene-alone bioscaffolds or islets cultured alone (P < 0.05). In vivo studies, in which bioscaffolds were transplanted into the epididymal fat pad of diabetic mice, demonstrated that, when islet:AD-MSC units were seeded into graphene–0.5 w/v% Dex bioscaffolds, this resulted in complete restoration of glycemic control immediately after transplantation with these islets also showing a faster response to glucose challenges (P < 0.05). Hence, this combination approach of using a graphene bioscaffold that can be functionalized for local delivery of Dex into the surrounding microenvironment, together with AD-MSC therapy, can significantly improve the survival and function of transplanted islets.
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Affiliation(s)
- Mehdi Razavi
- Interventional Regenerative Medicine and Imaging Laboratory, Department of Radiology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
- Biionix™ (Bionic Materials, Implants & Interfaces) Cluster, Department of Internal Medicine, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
- Department of Materials Science and Engineering, University of Central Florida, Orlando, FL 32816, USA
| | - Jing Wang
- Interventional Regenerative Medicine and Imaging Laboratory, Department of Radiology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
| | - Avnesh S. Thakor
- Interventional Regenerative Medicine and Imaging Laboratory, Department of Radiology, Stanford University School of Medicine, Palo Alto, CA 94304, USA
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Salem T, Frankman Z, Churko J. Tissue engineering techniques for iPSC derived three-dimensional cardiac constructs. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:891-911. [PMID: 34476988 PMCID: PMC9419978 DOI: 10.1089/ten.teb.2021.0088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Recent developments in applied developmental physiology have provided well-defined methodologies for producing human stem cell derived cardiomyocytes. Cardiomyocytes produced in this way have become commonplace as cardiac physiology research models. This accessibility has also allowed for the development of tissue engineered human heart constructs for drug screening, surgical intervention, and investigating cardiac pathogenesis. However, cardiac tissue engineering is an interdisciplinary field that involves complex engineering and physiological concepts, which limits its accessibility. This review provides a readable, broad reaching, and thorough discussion of major factors to consider for the development of cardiovascular tissues from stem cell derived cardiomyocytes. This review will examine important considerations in undertaking a cardiovascular tissue engineering project, and will present, interpret, and summarize some of the recent advancements in this field. This includes reviewing different forms of tissue engineered constructs, a discussion on cardiomyocyte sources, and an in-depth discussion of the fabrication and maturation procedures for tissue engineered heart constructs.
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Affiliation(s)
- Tori Salem
- University of Arizona Medical Center - University Campus, 22165, Cellular and Molecular Medicine, Tucson, Arizona, United States;
| | - Zachary Frankman
- University of Arizona Medical Center - University Campus, 22165, Biomedical Engineering, Tucson, Arizona, United States;
| | - Jared Churko
- University of Arizona Medical Center - University Campus, 22165, 1501 N Campbell RD, SHC 6143, Tucson, Arizona, United States, 85724-5128;
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Sivaraj D, Chen K, Chattopadhyay A, Henn D, Wu W, Noishiki C, Magbual NJ, Mittal S, Mermin-Bunnell AM, Bonham CA, Trotsyuk AA, Barrera JA, Padmanabhan J, Januszyk M, Gurtner GC. Hydrogel Scaffolds to Deliver Cell Therapies for Wound Healing. Front Bioeng Biotechnol 2021; 9:660145. [PMID: 34012956 PMCID: PMC8126987 DOI: 10.3389/fbioe.2021.660145] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 04/07/2021] [Indexed: 02/06/2023] Open
Abstract
Cutaneous wounds are a growing global health burden as a result of an aging population coupled with increasing incidence of diabetes, obesity, and cancer. Cell-based approaches have been used to treat wounds due to their secretory, immunomodulatory, and regenerative effects, and recent studies have highlighted that delivery of stem cells may provide the most benefits. Delivering these cells to wounds with direct injection has been associated with low viability, transient retention, and overall poor efficacy. The use of bioactive scaffolds provides a promising method to improve cell therapy delivery. Specifically, hydrogels provide a physiologic microenvironment for transplanted cells, including mechanical support and protection from native immune cells, and cell-hydrogel interactions may be tailored based on specific tissue properties. In this review, we describe the current and future directions of various cell therapies and usage of hydrogels to deliver these cells for wound healing applications.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Geoffrey C. Gurtner
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
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Razavi M, Primavera R, Vykunta A, Thakor AS. Silicone-based bioscaffolds for cellular therapies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 119:111615. [DOI: 10.1016/j.msec.2020.111615] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 08/18/2020] [Accepted: 10/05/2020] [Indexed: 12/27/2022]
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Primavera R, Razavi M, Kevadiya BD, Wang J, Vykunta A, Di Mascolo D, Decuzzi P, Thakor AS. Enhancing islet transplantation using a biocompatible collagen-PDMS bioscaffold enriched with dexamethasone-microplates. Biofabrication 2021; 13. [PMID: 33455953 DOI: 10.1088/1758-5090/abdcac] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/15/2021] [Indexed: 01/01/2023]
Abstract
Islet transplantation is a promising approach to enable type 1 diabetic patients to attain glycemic control independent of insulin injections. However, up to 60% of islets are lost immediately following transplantation. To improve this outcome, islets can be transplanted within bioscaffolds, however, synthetic bioscaffolds induce an intense inflammatory reaction which can have detrimental effects on islet function and survival. In the present study, we first improved the biocompatibility of polydimethylsiloxane (PDMS) bioscaffolds by coating them with collagen. To reduce the inflammatory response to PDMS bioscaffolds, we then enriched the bioscaffolds with dexamethasone-loaded microplates (DEX-µScaffolds). These DEX-microplates have the ability to release DEX in a sustained manner over 7 weeks within a therapeutic range that does not affect the glucose responsiveness of the islets but which minimizes inflammation in the surrounding microenvironment. The bioscaffold showed excellent mechanical properties that enabled it to resist pore collapse thereby helping to facilitate islet seeding and its handling for implantation, and subsequent engraftment, within the epididymal fat pad (EFP). Following the transplantation of islets into the EFP of diabetic mice using DEX-µScaffolds there was a return in basal blood glucose to normal values by day 4, with normoglycemia maintained for 30 days. Furthermore, these animals demonstrated a normal dynamic response to glucose challenges with histological evidence showing reduced pro-inflammatory cytokines and fibrotic tissue surrounding DEX-µScaffolds at the transplantation site. In contrast, diabetic animals transplanted with either islets alone or islets in bioscaffolds without DEX microplates were not able to regain glycemic control during basal conditions with overall poor islet function. Taken together, our data show that coating PDMS bioscaffolds with collagen, and enriching them with DEX-microplates, significantly prolongs and enhances islet function and survival.
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Affiliation(s)
- Rosita Primavera
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94305-5119, UNITED STATES
| | - Mehdi Razavi
- University of Central Florida, 6900 Lake Nona Blvd, Orlando, Florida, 32827, UNITED STATES
| | - Bhavesh D Kevadiya
- PEN, University of Nebraska Medical Center, Lab-3064,DRC-1,department of pharmacology and experimental neuroscience, Omaha, Nebraska, 68198, UNITED STATES
| | - Jing Wang
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94304, UNITED STATES
| | - Akshara Vykunta
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94304, UNITED STATES
| | - Daniele Di Mascolo
- Central Research Labs Genova, Istituto Italiano di Tecnologia, Via Morego, 30, Genova, Liguria, 16163, ITALY
| | - Paolo Decuzzi
- Istituto Italiano di Tecnologia, Via Morego, 30, Genova, Liguria, 16163, ITALY
| | - Avnesh S Thakor
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94304, UNITED STATES
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Razavi M, Primavera R, Kevadiya BD, Wang J, Ullah M, Buchwald P, Thakor AS. Controlled Nutrient Delivery to Pancreatic Islets Using Polydopamine-Coated Mesoporous Silica Nanoparticles. NANO LETTERS 2020; 20:7220-7229. [PMID: 32909757 PMCID: PMC8121116 DOI: 10.1021/acs.nanolett.0c02576] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
In the present study, we created a nanoscale platform that can deliver nutrients to pancreatic islets in a controlled manner. Our platform consists of a mesoporous silica nanoparticle (MSNP), which can be loaded with glutamine (G: an essential amino acid required for islet survival and function). To control the release of G, MSNPs were coated with a polydopamine (PD) layer. With the optimal parameters (0.5 mg/mL and 0.5 h), MSNPs were coated with a layer of PD, which resulted in a delay of G release from MSNPs over 14 d (57.4 ± 4.7% release). Following syngeneic renal subcapsule islet transplantation in diabetic mice, PDG-MSNPs improved the engraftment of islets (i.e., enhanced revascularization and reduced inflammation) as well as their function, resulting in re-establishment of glycemic control. Collectively, our data show that PDG-MSNPs can support transplanted islets by providing them with a controlled and sustained supply of nutrients.
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Affiliation(s)
- Mehdi Razavi
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Palo Alto, California 94304, United States; Biionix (Bionic Materials, Implants & Interfaces) Cluster, Department of Internal Medicine, College of Medicine and Department of Materials Science & Engineering, University of Central Florida, Orlando, Florida 32827, United States
| | - Rosita Primavera
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Palo Alto, California 94304, United States
| | - Bhavesh D Kevadiya
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Palo Alto, California 94304, United States
| | - Jing Wang
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Palo Alto, California 94304, United States
| | - Mujib Ullah
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Palo Alto, California 94304, United States
| | - Peter Buchwald
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
| | - Avnesh S Thakor
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Palo Alto, California 94304, United States
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14
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Liao W, Hashimoto Y, Honda Y, Li P, Yao Y, Zhao Z, Matsumoto N. Accelerated construction of an in vitro model of human periodontal ligament tissue: vacuum plasma combined with fibronectin coating and a polydimethylsiloxane matrix. PeerJ 2019; 7:e7036. [PMID: 31183259 PMCID: PMC6546080 DOI: 10.7717/peerj.7036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 04/27/2019] [Indexed: 02/05/2023] Open
Abstract
Tying shape memory wires to crowded teeth causes the wires to deform according to the dental arch. This deformation results in a resilient force that is delivered to the tooth. The appropriate amount of force can activate the osteogenetic and osteoclastic ability of the periodontal ligament (PDL) and the tooth can be moved. This is the biological basis of orthodontic treatment. To achieve further insight into the mechanisms underlying orthodontic treatment, we examined whether accelerated construction of an in vitro human PDL fibroblast (HPdLF) stretching model can be achieved by combining fibronectin coating and vacuum plasma treatment with polydimethylsiloxane (PDMS) cell-culture chambers. Each chamber was randomly assigned to a no-surface modification (NN), fibronectin coating (FN), vacuum plasma treatment (PN), or vacuum plasma treatment followed by a fibronectin coating (PF) treatment protocol. The physical and chemical features and ability to promote cellular proliferation of the PDMS chamber surfaces were evaluated. Cellular adhesion of four materials were evaluated and two best-proliferated groups were considered as better model-constructing surfaces and used in subsequent experiments and used in subsequent experiments. HPdLFs were cultured on these two kinds of chambers without stretching for 3 days, then with stretching for 7 days. Time-course gene expression cellular morphology were evaluated. Chambers in the PN group had high wettability and surface component changes. The FN and PF chambers had high cellular proliferation ability. They were selected into subsequent experiments. After 3 days of culturing HPdLFs on the PF and PN chambers, the cells in the PF chambers had significantly higher levels of runt-related transcription factor 2 (Runx-2) and osteocalcin (OCN) gene expression compared with the cells in the PN chambers. After cyclic stretch application to the cells in the PN and PF chambers, expression of the type-3 collagen (COL-3) gene in PF group continued to increase for 7 days and was significantly higher than that in the PN group from day 5 onwards. The HPdLFs in the PF group showed parallel alignment from days 3 to 7 after imposition of cyclic stretch, while those in the PN group aligned in parallel from day 5 on. Our results suggested that applying a fibronectin coating to a PDMS chamber after plasma treatment can accelerate establishment of an in vitro PDL stretching model.
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Affiliation(s)
- Wen Liao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China.,Department of Orthodontics, Osaka Dental University, Osaka, Japan
| | | | - Yoshitomo Honda
- Institute of Dental Research, Osaka Dental University, Osaka, Japan
| | - Peiqi Li
- Department of Implantology, Osaka Dental University, Osaka, Japan
| | - Yang Yao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Ghorbani F, Zamanian A, Aidun A. Bioinspired polydopamine coating‐assisted electrospun polyurethane‐graphene oxide nanofibers for bone tissue engineering application. J Appl Polym Sci 2019. [DOI: 10.1002/app.47656] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Farnaz Ghorbani
- Department of Biomedical EngineeringTehran Science and Research Branch, Islamic Azad University Tehran Iran
- Biomaterials Research Group, Department of Nanotechnology and Advanced MaterialsMaterials and Energy Research Center Tehran Iran
- Department of BiomaterialsAprin Advanced Technologies Development Company Tehran Iran
| | - Ali Zamanian
- Biomaterials Research Group, Department of Nanotechnology and Advanced MaterialsMaterials and Energy Research Center Tehran Iran
- Department of BiomaterialsAprin Advanced Technologies Development Company Tehran Iran
| | - Amir Aidun
- National Cell Bank of Iran, Pasteur Institute of Iran Tehran Iran
- Tissues and Biomaterial Research Group (TBRG)Universal Scientific Education and Research Network (USERN) Tehran Iran
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