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Williams AH, Hebert AM, Boehm RC, Huddleston ME, Jenkins MR, Velev OD, Nelson MT. Bioscaffold Stiffness Mediates Aerosolized Nanoparticle Uptake in Lung Epithelial Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:50643-50656. [PMID: 34668373 DOI: 10.1021/acsami.1c09701] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this study, highly porous, ultrasoft polymeric mats mimicking human tissues were formed from novel polyurethane soft dendritic colloids (PU SDCs). PU SDCs have a unique fibrillar morphology controlled by antisolvent precipitation. When filtered from suspension, PU SDCs form mechanically robust nonwoven mats. The stiffness of the SDC mats can be tuned for physiological relevance. The unique physiochemical characteristics of the PU SDC particles dictate the mechanical properties resulting in tunable elastic moduli ranging from 200 to 800 kPa. The human lung A549 cells cultured on both stiff and soft PU SDC membranes were found to be viable, capable of supporting the air-liquid interface (ALI) cell culture, and maintained barrier integrity. Furthermore, A549 cellular viability and uptake efficiency of aerosolized tannic acid-coated gold nanoparticles (Ta-Au) was found to depend on elastic modulus and culture conditions. Ta-Au nanoparticle uptake was twofold and fourfold greater on soft PU SDCs, when cultured at submerged and ALI conditions, respectively. The significant increase in endocytosed Ta-Au resulted in a 20% decrease in viability, and a 4-fold increase in IL-8 cytokine secretion when cultured on soft PU SDCs at ALI. Common tissue culture materials exhibit super-physiological elastic moduli, a factor found to be critical in analyzing nanomaterial cellular interactions and biological responses.
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Affiliation(s)
- Austin H Williams
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Adrien M Hebert
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
| | - Robert C Boehm
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
| | - Mary E Huddleston
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Meghan R Jenkins
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
- UES, Inc., Dayton, Ohio 45432, United States
| | - Orlin D Velev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - M Tyler Nelson
- Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson AFB, Ohio 45433, United States
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Park W, Jang S, Kim TW, Bae J, Oh TI, Lee E. Microfluidic-Printed Microcarrier for In Vitro Expansion of Adherent Stem Cells in 3D Culture Platform. Macromol Biosci 2019; 19:e1900136. [PMID: 31268233 DOI: 10.1002/mabi.201900136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/19/2019] [Indexed: 12/12/2022]
Abstract
Microcarrier-based stem cell expansion cultures can increase the dimensions of in vitro stem cell cultures from 2D to 3D. The culture handling process then becomes more efficient compared with conventional 2D cultures. However, the use of spherical plastic microcarriers complicates the monitoring of cell culture. To facilitate monitoring, transparent disc-shaped microcarriers are manufactured using a light-initiated microfluidic printing system and the obtained microcarriers are named as 2.5D microcarrier. The 2.5D microcarriers (diameter/height ≈ 5) enable us to use conventional monitoring tools in 2D-based platform during the in vitro expansion on a 3D culture platform. Surface modification via a 1 h-long poly-dopamine (PDA) reaction can maintain the transparent nature of the microcarriers while optimizing the cell attachment. The surface marker expression and differentiation potential of the 2.5D microcarrier-expanded stem cells reveal that the characteristics and functionalities preserved during expansion. The 2.5D microcarrier is readily integrated into an on-bead assay to conserve reagents and permit a high number (n = 9) of repeated measurements with reliable results. These results demonstrate that the 2.5D microcarrier-based scale-up culture provides a valuable tool for the in vitro expansion of adherent stem cells, especially if repetitive monitoring is required.
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Affiliation(s)
- Wook Park
- Department of Electronic Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeongdae-ro, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, South Korea
| | - Seoyoung Jang
- Department of Medical Engineering, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, South Korea
| | - Tae Woo Kim
- Graduate School of East-West Medical Science, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, South Korea
| | - Junghyun Bae
- College of Electronics Engineering, Kyung Hee University, 1732 Deogyeongdae-ro, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, South Korea
| | - Tong In Oh
- Department of Biomedical Engineering, School of Medicine, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, South Korea
| | - EunAh Lee
- Impedance Imaging Research Center, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, South Korea
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Park YJ, Sharma BK, Shinde SM, Kim MS, Jang B, Kim JH, Ahn JH. All MoS 2-Based Large Area, Skin-Attachable Active-Matrix Tactile Sensor. ACS NANO 2019; 13:3023-3030. [PMID: 30768896 DOI: 10.1021/acsnano.8b07995] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Large-area, ultrathin flexible tactile sensors with conformal adherence are becoming crucial for advances in wearable electronics, electronic skins and biorobotics. However, normal passive tactile sensors suffer from high crosstalk, resulting in inaccurate sensing, which consequently limits their use in such advanced applications. Active-matrix-driven tactile sensors could potentially overcome such hurdles, but it demands the high performance and reliable operations of the thin-film-transistor array that could efficiently control integrated pressure gauges. Herein, we utilized the benefit of the semiconducting and mechanical excellence of MoS2 and placed it between high- k Al2O3 dielectric sandwich layers to achieve the high and reliable performance of MoS2-based back-plane circuitry and strain sensor. This strategical combination reduces the fabrication complexity and enables the demonstration of an all MoS2-based large area (8 × 8 array) active-matrix tactile sensor offering a wide sensing range (1-120 kPa), sensitivity value (Δ R/ R0: 0.011 kPa-1), and a response time (180 ms) with excellent linearity. In addition, it showed potential in sensing multitouch accurately, tracking a stylus trajectory, and detecting the shape of an external object by grasping it using the palm of the human hand.
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Affiliation(s)
- Yong Ju Park
- School of Electrical and Electronic Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea
| | - Bhupendra K Sharma
- School of Electrical and Electronic Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea
| | - Sachin M Shinde
- School of Electrical and Electronic Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea
| | - Min-Seok Kim
- Center for Mechanical Metrology , Korea Research Institute of Standards and Science , 267 Gajeong-ro , Yuseong-gu, Daejeon 34113 , Republic of Korea
| | - Bongkyun Jang
- Department of Applied Nano-Mechanics, Nano-Convergence Mechanical Systems Research Division , Korea Institute of Machinery and Materials , 156 Gajeongbuk-ro , Yuseong-gu, Daejeon 34103 , Republic of Korea
| | - Jae-Hyun Kim
- Department of Applied Nano-Mechanics, Nano-Convergence Mechanical Systems Research Division , Korea Institute of Machinery and Materials , 156 Gajeongbuk-ro , Yuseong-gu, Daejeon 34103 , Republic of Korea
| | - Jong-Hyun Ahn
- School of Electrical and Electronic Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea
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Parandakh A, Anbarlou A, Tafazzoli-Shadpour M, Ardeshirylajimi A, Khani MM. Substrate topography interacts with substrate stiffness and culture time to regulate mechanical properties and smooth muscle differentiation of mesenchymal stem cells. Colloids Surf B Biointerfaces 2019; 173:194-201. [PMID: 30292932 DOI: 10.1016/j.colsurfb.2018.09.066] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/05/2018] [Accepted: 09/25/2018] [Indexed: 02/07/2023]
Abstract
Substrate stiffness and topography are two powerful means by which mesenchymal stem cells (MSCs) activities can be modulated. The effects of substrate stiffness on the MSCs mechanical properties were investigated previously, however, the role of substrate topography in this regard is not yet well understood. Moreover, in vessel wall, these two physical cues act simultaneously to regulate cellular function, hence it is important to investigate their cooperative effects on cellular activity. Herein, we investigated the combined effects of substrate stiffness, substrate topography and culture time on the mechanical behavior of MSCs. The MSCs were cultured on the stiff and soft substrates with or without micro-grooved topography for 10 days and their viscoelastic properties and smooth muscle (SM) gene expression were investigated on days 2, 6 and 10. In general, substrate topography significantly interacted with substrate stiffness as well as culture time in the modulation of cell viscoelastic behavior and SM gene expression. The micro-grooved, stiff substrates resulted in the maximum cell stiffness and gene expression of α-actin and h1-calponin, and these values were detected to be minimum in the smooth, soft substrates. The findings can be helpful in the mechano-regulation of MSCs for vascular tissue engineering applications.
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Affiliation(s)
- Azim Parandakh
- Faculty of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Azadeh Anbarlou
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Abdolreza Ardeshirylajimi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Mehdi Khani
- Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Sthanam LK, Saxena N, Mistari VK, Roy T, Jadhav SR, Sen S. Initial Priming on Soft Substrates Enhances Subsequent Topography-Induced Neuronal Differentiation in ESCs but Not in MSCs. ACS Biomater Sci Eng 2018; 5:180-192. [PMID: 33405870 DOI: 10.1021/acsbiomaterials.8b00313] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Differentiation of stem cells into neurogenic lineage is of great interest for treatment of neurodegenerative diseases. While the role of chemical cues in regulating stem cell fate is well appreciated, the identification of physical cues has revolutionized the field of tissue engineering leading to development of scaffolds encoding one or more physical cues for inducing stem cell differentiation. In this study, using human mesenchymal stem cells (hMSCs) and mouse embryonic stem cells (mESCs), we have tested if stiffness and topography can be collectively tuned for inducing neuronal differentiation by culturing these cells on polyacrylamide hydrogels of varying stiffness (5, 10, and 20 kPa) containing rectangular grooves (10, 15, and 25 μm in width). While hMSCs maximally elongate and express neuronal markers on soft 5 kPa gels containing 10/15 μm grooves, single mESCs are unable to sense topographical features when cultured directly on grooved gels. However, this inability to sense topography is rescued by priming mESCs initially on soft 1 kPa flat gels and then replating these cells onto the grooved gels. Compared to direct culture on the grooved gels, this sequential adaptation increases both viability as well as neuronal differentiation. However, this two-step process does not enhance neuronal marker expression in hMSCs. In addition to highlighting important differences between hMSCs and mESCs in their responsiveness to physical cues, our study suggests that conditioning on soft substrates is essential for inducing topography-mediated neuronal differentiation in mESCs.
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Kerch G. Polymer hydration and stiffness at biointerfaces and related cellular processes. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:13-25. [DOI: 10.1016/j.nano.2017.08.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 08/14/2017] [Accepted: 08/16/2017] [Indexed: 01/15/2023]
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Santander-Borrego M, Taran E, Shadforth AMA, Whittaker AK, Chirila TV, Blakey I. Hydrogels with Lotus Leaf Topography: Investigating Surface Properties and Cell Adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:485-493. [PMID: 28054787 DOI: 10.1021/acs.langmuir.6b03547] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The interactions of cells with the surface of materials is known to be influenced by a range of factors that include chemistry and roughness; however, it is often difficult to probe these factors individually without also changing the others. Here we investigate the role of roughness on cell adhesion while maintaining the same underlying chemistry. This was achieved by using a polymerization in mold technique to prepare poly(hydroxymethyl methacrylate) hydrogels with either a flat topography or a topography that replicated the microscale features of lotus leaves. These materials were then assessed for cell adhesion, and atomic force microscopy and contact angle analysis were then used to probe the physical reasons for the differing behavior in relation to cell adhesion.
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Affiliation(s)
- Miriem Santander-Borrego
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
| | - Elena Taran
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Australian National Fabrication Facility-Queensland Node , St. Lucia, Queensland 4072, Australia
| | - Audra M A Shadforth
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
| | - Andrew K Whittaker
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Centre for Advanced Imaging, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
| | - Traian V Chirila
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Faculty of Medicine and Biomedical Sciences, The University of Queensland , Herston Road, Herston, Queensland 4029, Australia
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
- Science & Engineering Faculty, Queensland University of Technology , 2 George Street Brisbane, Queensland 4001, Australia
- Faculty of Science, The University of Western Australia , Crawley, Western Australia 6009, Australia
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Centre for Advanced Imaging, The University of Queensland , St. Lucia, Queensland 4072, Australia
- Queensland Eye Institute , 140 Melbourne Street, South Brisbane, Queensland 4101, Australia
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