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Liu Y, Pierre CJ, Joshi S, Sun L, Li Y, Guan J, Favor JDL, Holmes C. Cell-Specific Impacts of Surface Coating Composition on Extracellular Vesicle Secretion. ACS APPLIED MATERIALS & INTERFACES 2024; 16:29737-29759. [PMID: 38805212 DOI: 10.1021/acsami.4c03213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Biomaterial properties have recently been shown to modulate extracellular vesicle (EV) secretion and cargo; however, the effects of substrate composition on EV production remain underexplored. This study investigates the impacts of surface coatings composed of collagen I (COLI), fibronectin (FN), and poly l-lysine (PLL) on EV secretion for applications in therapeutic EV production and to further understanding of how changes in the extracellular matrix microenvironment affect EVs. EV secretion from primary bone marrow-derived mesenchymal stromal cells (BMSCs), primary adipose-derived stem cells (ASCs), HEK293 cells, NIH3T3 cells, and RAW264.7 cells was characterized on the different coatings. Expression of EV biogenesis genes and cellular adhesion genes was also analyzed. COLI coatings significantly decreased EV secretion in RAW264.7 cells, with associated decreases in cell viability and changes in EV biogenesis-related and cell adhesion genes at day 4. FN coatings increased EV secretion in NIH3T3 cells, while PLL coatings increased EV secretion in ASCs. Surface coatings had significant effects on the capacity of EVs derived from RAW264.7 and NIH3T3 cells to impact in vitro macrophage proliferation. Overall, surface coatings had different cell-specific effects on EV secretion and in vitro functional capacity, thus highlighting the potential of substrate coatings to further the development of clinical EV production systems.
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Affiliation(s)
- Yuan Liu
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida A&M University, Florida State University, 2525 Pottsdamer Street, Tallahasee, Florida 32310-6046, United States
| | - Clifford J Pierre
- Department of Health, Nutrition, and Food Science, College of Education, Health and Human Sciences, Florida State University, 1114 West Call Street, Tallahasee, Florida 32306, United States
| | - Sailesti Joshi
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida A&M University, Florida State University, 2525 Pottsdamer Street, Tallahasee, Florida 32310-6046, United States
| | - Li Sun
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida A&M University, Florida State University, 2525 Pottsdamer Street, Tallahasee, Florida 32310-6046, United States
- Department of Biomedical Sciences, College of Medicine, Florida State University, 1115 West Call Street, Tallahasee, Florida 32306-4300, United States
| | - Yan Li
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida A&M University, Florida State University, 2525 Pottsdamer Street, Tallahasee, Florida 32310-6046, United States
| | - Jingjiao Guan
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida A&M University, Florida State University, 2525 Pottsdamer Street, Tallahasee, Florida 32310-6046, United States
| | - Justin D La Favor
- Department of Health, Nutrition, and Food Science, College of Education, Health and Human Sciences, Florida State University, 1114 West Call Street, Tallahasee, Florida 32306, United States
| | - Christina Holmes
- Department of Chemical & Biomedical Engineering, FAMU-FSU College of Engineering, Florida A&M University, Florida State University, 2525 Pottsdamer Street, Tallahasee, Florida 32310-6046, United States
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Hendler RM, Weiss OE, Morad T, Sion G, Kirby M, Dubinsky Z, Barbora A, Minnes R, Baranes D. A Poly-D-lysine-Coated Coralline Matrix Promotes Hippocampal Neural Precursor Cells' Differentiation into GFAP-Positive Astrocytes. Polymers (Basel) 2023; 15:4054. [PMID: 37896298 PMCID: PMC10610048 DOI: 10.3390/polym15204054] [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: 11/01/2022] [Revised: 09/18/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
A major goal of regenerative medicine of the central nervous system is to accelerate the regeneration of nerve tissue, where astrocytes, despite their positive and negative roles, play a critical role. Thus, scaffolds capable of producing astrocytes from neural precursor cells (NPCs) are most desirable. Our study shows that NPCs are converted into reactive astrocytes upon cultivation on coralline-derived calcium carbonate coated with poly-D-lysine (PDL-CS). As shown via nuclei staining, the adhesion of neurospheres containing hundreds of hippocampal neural cells to PDL-CS resulted in disaggregation of the cell cluster as well as the radial migration of dozens of cells away from the neurosphere core. Migrating cells per neurosphere averaged 100 on PDL-CS, significantly higher than on uncoated CS (28), PDL-coated glass (65), or uncoated glass (20). After 3 days of culture on PDL-CS, cell migration plateaued and remained stable for four more days. In addition, NPCs expressing nestin underwent continuous morphological changes from round to spiky, extending and elongating their processes, resembling activated astrocytes. The extension of the process increased continuously during the maturation of the culture and doubled after 7 days compared to day 1, whereas bifurcation increased by twofold during the first 3 days before plateauing. In addition, nestin positive cells' shape, measured through the opposite circularity level correlation, decreased approximately twofold after three days, indicating spiky transformation. Moreover, nestin-positive cells co-expressing GFAP increased by 2.2 from day 1 to 7, reaching 40% of the NPC population on day 7. In this way, PDL-CS promotes NPC differentiation into reactive astrocytes, which could accelerate the repair of neural tissue.
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Affiliation(s)
- Roni Mina Hendler
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
| | - Orly Eva Weiss
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
| | - Tzachy Morad
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
| | - Guy Sion
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
- Department of Science, The David Yellin Academic College of Education, Jerusalem 9103501, Israel
| | - Michael Kirby
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
- Adelson School of Medicine, Ariel University, Ariel 4070000, Israel
| | - Zvy Dubinsky
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Ayan Barbora
- Department of Physics, Ariel University, Ariel 4070000, Israel
| | - Refael Minnes
- Department of Physics, Ariel University, Ariel 4070000, Israel
| | - Danny Baranes
- Department of Molecular Biology, Ariel University, Ariel 4070000, Israel
- Adelson School of Medicine, Ariel University, Ariel 4070000, Israel
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Duan K, Orabi M, Warchock A, Al-Akraa Z, Ajami Z, Chun TH, Lo JF. Monolithically 3D-Printed Microfluidics with Embedded µTesla Pump. MICROMACHINES 2023; 14:mi14020237. [PMID: 36837937 PMCID: PMC9965163 DOI: 10.3390/mi14020237] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 06/08/2023]
Abstract
Microfluidics has earned a reputation for providing numerous transformative but disconnected devices and techniques. Active research seeks to address this challenge by integrating microfluidic components, including embedded miniature pumps. However, a significant portion of existing microfluidic integration relies on the time-consuming manual fabrication that introduces device variations. We put forward a framework for solving this disconnect by combining new pumping mechanics and 3D printing to demonstrate several novel, integrated and wirelessly driven microfluidics. First, we characterized the simplicity and performance of printed microfluidics with a minimum feature size of 100 µm. Next, we integrated a microtesla (µTesla) pump to provide non-pulsatile flow with reduced shear stress on beta cells cultured on-chip. Lastly, the integration of radio frequency (RF) device and a hobby-grade brushless motor completed a self-enclosed platform that can be remotely controlled without wires. Our study shows how new physics and 3D printing approaches not only provide better integration but also enable novel cell-based studies to advance microfluidic research.
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Affiliation(s)
- Kai Duan
- Department of Mechanical Engineering, University of Michigan–Dearborn, Dearborn, MI 48128, USA
| | - Mohamad Orabi
- Department of Mechanical Engineering, University of Michigan–Dearborn, Dearborn, MI 48128, USA
| | - Alexus Warchock
- Department of Mechanical Engineering, University of Michigan–Dearborn, Dearborn, MI 48128, USA
| | - Zaynab Al-Akraa
- Department of Mechanical Engineering, University of Michigan–Dearborn, Dearborn, MI 48128, USA
| | - Zeinab Ajami
- Department of Mechanical Engineering, University of Michigan–Dearborn, Dearborn, MI 48128, USA
| | - Tae-Hwa Chun
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Joe F. Lo
- Department of Mechanical Engineering, University of Michigan–Dearborn, Dearborn, MI 48128, USA
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Roumani S, Jeanneau C, Giraud T, Cotten A, Laucournet M, Sohier J, Pithioux M, About I. Osteogenic Potential of a Polyethylene Glycol Hydrogel Functionalized with Poly-Lysine Dendrigrafts (DGL) for Bone Regeneration. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16020862. [PMID: 36676600 PMCID: PMC9863473 DOI: 10.3390/ma16020862] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/28/2022] [Accepted: 01/12/2023] [Indexed: 05/27/2023]
Abstract
Resorbable hydrogels are widely used as scaffolds for tissue engineering. These hydrogels can be modified by grafting dendrimer-linked functionalized molecules (dendrigrafts). Our aim was to develop a tunable poly(L-lysine) dendrigrafts (DGL)/PEG-based hydrogel with an inverse porosity and to investigate its osteogenic potential. DGL/PEG hydrogels were emulsified in a surfactant-containing oil solution to form microspheres. The toxicity was evaluated on Human Vascular Endothelial Cells (HUVECs) and Bone Marrow Mesenchymal Stem Cells (hMSCs) with Live/Dead and MTT assays. The effects on HUVECs were investigated through C5 Complement expression by RT-PCR and C5a/TGF-β1 secretion by ELISA. Recruitment of hMSCs was investigated using Boyden chambers and their osteogenic differentiation was studied by measuring Alkaline Phosphatase activity (ALP) and BMP-2 secretion by ELISA. Adjusting the stirring speed during the emulsification allowed to obtain spherical microspheres with tunable diameters (10-1600 µm). The cell viability rate with the hydrogel was 95 and 100% with HUVECs and hMSCs, respectively. Incubating HUVECs with the biomaterial induced a 5-fold increase in TGF-β1 and a 3-fold increase in Complement C5a release. Furthermore, HUVEC supernatants obtained after incubation with the hydrogel induced a 2.5-fold increase in hMSC recruitment. The hydrogel induced a 3-fold increase both in hMSC ALP activity and BMP-2 secretion. Overall, the functionalized hydrogel enhanced the osteogenic potential by interacting with endothelial cells and hMSCs and represents a promising tool for bone tissue engineering.
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Affiliation(s)
- Sandra Roumani
- Aix-Marseille University, CNRS, ISM, 13009 Marseille, France
| | | | - Thomas Giraud
- Aix-Marseille University, CNRS, ISM, 13009 Marseille, France
- APHM, Hôpital Timone, Pôle Odontologie, 13005 Marseille, France
| | - Aurélie Cotten
- Aix-Marseille University, CNRS, ISM, 13009 Marseille, France
| | - Marc Laucournet
- Laboratory for Tissue Biology and Therapeutic Engineering (LBTI), UMR 5305, CNRS, Lyon University, 69367 Lyon, France
| | - Jérôme Sohier
- Laboratory for Tissue Biology and Therapeutic Engineering (LBTI), UMR 5305, CNRS, Lyon University, 69367 Lyon, France
| | - Martine Pithioux
- Aix-Marseille University, CNRS, ISM, 13009 Marseille, France
- Aix-Marseille University, APHM, CNRS, ISM, Sainte-Marguerite Hospital, Institute for Locomotion, Department of Orthopaedics and Traumatology, 13009 Marseille, France
| | - Imad About
- Aix-Marseille University, CNRS, ISM, 13009 Marseille, France
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Concentration Dependent Effect of Quaternary Amines on the Adhesion of U251-MG Cells. Gels 2022; 8:gels8120827. [PMID: 36547352 PMCID: PMC9777631 DOI: 10.3390/gels8120827] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/07/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022] Open
Abstract
Cationic gels have seen increasing interest in recent years for 2D cell cultivation since they may represent an alternative to the well-known RGD-peptide motif functionalized gels. However, few hydrogel systems with adjustable cationic strength have been fabricated and investigated so far. In this work, eight gels with defined concentrations of cationic groups, two of which also contained the RGD peptide, were prepared from three well-defined, soluble precursor copolymers with thiol-functionalities and PEGDA3500 as a crosslinker via thiol-ene chemistry. Live/dead stainings of U-251-MG cells on the hydrogels with different concentrations of the cationic motif were made after 3 days and 7 days of cultivation. The results show a high dependence of the number of adhesive cells and their morphology, cluster versus spread cells, on the concentration of cationic groups in the gel. This effect was more pronounced when the gels were not further dialyzed before usage. In addition, a synergistic effect of the two motifs, cationic group and RGD peptide, could be demonstrated, which together induce stronger cell adhesion than either motif alone.
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6
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Faussner A, Deininger MM, Weber C, Steffens S. Direct addition of poly-lysine or poly-ethylenimine to the medium: A simple alternative to plate pre-coating. PLoS One 2022; 17:e0260173. [PMID: 35802710 PMCID: PMC9269970 DOI: 10.1371/journal.pone.0260173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 05/01/2022] [Indexed: 11/21/2022] Open
Abstract
For most cell culture experiments, it is indispensable that the cells are firmly anchored to culture plates, withstanding rinsing steps that can create shear forces and tolerating temperature changes without detaching. For semi-adherent cells such as the common HEK 293 or PC-12 cells, this could so far be obtained by time-consuming plate pre-coating with cationic polymer solutions. We report here, that i) pre-coating with the cheaper poly-ethylenimine (PEI) works as well as the commonly used poly-D-lysine (PDL), but more importantly and novel ii) that simple direct addition of either PEI (1.5 μg/ml) or PDL (2 μg/ml) to the cell culture medium results in strongly anchored HEK 293 cells, indistinguishable from ones seeded on pre-coated plates. Therefore, the replacement of plate pre-coating by direct addition of either PEI or PDL gives comparable excellent results, but is highly labour-, time-, and cost-efficient. Moreover, we could show that addition of PDL or PEI also works similarly well in animal-free culture using human platelet lysate instead of fetal bovine serum. Interestingly, additional experiments showed that strong cell attachment requires only cationic polymers but not fetal bovine serum or human platelet lysate added to the medium.
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Affiliation(s)
- Alexander Faussner
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilian-University (LMU), Munich, Germany
- * E-mail:
| | - Matthias M. Deininger
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilian-University (LMU), Munich, Germany
| | - Christian Weber
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilian-University (LMU), Munich, Germany
| | - Sabine Steffens
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilian-University (LMU), Munich, Germany
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7
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Hung YH, Chiu WC, Fuh SR, Lai YT, Tung TH, Huang CC, Lo CM. ECIS Based Electric Fence Method for Measurement of Human Keratinocyte Migration on Different Substrates. BIOSENSORS 2022; 12:bios12050293. [PMID: 35624596 PMCID: PMC9138674 DOI: 10.3390/bios12050293] [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: 04/07/2022] [Revised: 04/28/2022] [Accepted: 05/01/2022] [Indexed: 05/28/2023]
Abstract
Electric Cell-substrate Impedance Sensing (ECIS) is an impedance-based, real-time, and label-free measuring system for monitoring cellular activities in tissue culture. Previously, ECIS wound healing assay has been used to wound cells with high electric current and monitor the subsequent cell migration. In this study, we applied ECIS electric fence (EF) method, an alternative to electrical wounding, to assess the effects of different surface coatings on human keratinocyte (HaCaT) migration. The EF prevents inoculated cells from attaching or migrating to the fenced electrode surface while maintaining the integrity of the surface coating. After the EF is turned off, cells migrate into the cell-free area, and the increase in measured impedance is monitored. We cultured HaCaT cells on gold electrodes without coating or coated with poly-L-lysin (PLL), poly-D-lysine (PDL), or type-I collagen. We quantified migration rates according to the different slopes in the impedance time series. It was observed that either poly-L-lysine (PLL) or poly-D-lysine (PDL) limits cell adhesion and migration rates. Furthermore, the surface charge of the coated substrate in the culture condition positively correlates with the cell adhesion and migration process. Our results indicate that the EF method is useful for determining cell migration rates on specific surface coatings.
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Affiliation(s)
- Yu-Han Hung
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-H.H.); (W.-C.C.); (S.-R.F.); (Y.-T.L.); (T.-H.T.)
| | - Wei-Chih Chiu
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-H.H.); (W.-C.C.); (S.-R.F.); (Y.-T.L.); (T.-H.T.)
| | - Shyh-Rong Fuh
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-H.H.); (W.-C.C.); (S.-R.F.); (Y.-T.L.); (T.-H.T.)
- Department of Aesthetic Medicine, Chen Hsin General Hospital, Taipei 112, Taiwan
| | - Yi-Ting Lai
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-H.H.); (W.-C.C.); (S.-R.F.); (Y.-T.L.); (T.-H.T.)
| | - Tse-Hua Tung
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-H.H.); (W.-C.C.); (S.-R.F.); (Y.-T.L.); (T.-H.T.)
| | - Chun-Chung Huang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-H.H.); (W.-C.C.); (S.-R.F.); (Y.-T.L.); (T.-H.T.)
| | - Chun-Min Lo
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (Y.-H.H.); (W.-C.C.); (S.-R.F.); (Y.-T.L.); (T.-H.T.)
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Wang M, Deng H, Jiang T, Wang Y. Biomimetic remineralization of human dentine via a “bottom-up” approach inspired by nacre formation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 135:112670. [DOI: 10.1016/j.msec.2022.112670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 12/30/2021] [Accepted: 01/16/2022] [Indexed: 11/29/2022]
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9
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Vila JC, Castro-Aguirre N, López-Muñoz GA, Ferret-Miñana A, De Chiara F, Ramón-Azcón J. Disposable Polymeric Nanostructured Plasmonic Biosensors for Cell Culture Adhesion Monitoring. Front Bioeng Biotechnol 2021; 9:799325. [PMID: 34938725 PMCID: PMC8685410 DOI: 10.3389/fbioe.2021.799325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 11/15/2021] [Indexed: 11/20/2022] Open
Abstract
Over the last years, optical biosensors based on plasmonic nanomaterials have gained great scientific interest due to their unquestionable advantages compared to other biosensing technologies. They can achieve sensitive, direct, and label-free analysis with exceptional potential for multiplexing and miniaturization. Recently, it has been demonstrated the potential of using optical discs as high throughput nanotemplates for the development of plasmonic biosensors in a cost-effective way. This work is a pilot study focused on the development of an integrated plasmonic biosensor for the monitoring of cell adhesion and growth of human retinal pigmented cell line (ARPE-19) under different media conditions (0 and 2% of FBS). We observed an increase of the plasmonic band displacement under 2% FBS compared to 0% conditions over time (1, 3, and 5 h). These preliminary results show that the proposed plasmonic biosensing approach is a direct, non-destructive, and real-time tool that could be employed in the study of living cells behavior and culture conditions. Furthermore, this setup could assess the viability of the cells and their growth over time with low variability between the technical replicates improving the experimental replicability.
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Affiliation(s)
- Judith Camaló Vila
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Nerea Castro-Aguirre
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Gerardo A López-Muñoz
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Ainhoa Ferret-Miñana
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Francesco De Chiara
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Javier Ramón-Azcón
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
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Eckhart KE, Schmidt SJ, Starvaggi FA, Wolf ME, Vickery WM, Sydlik SA. Peptide- and Protein-Graphene Oxide Conjugate Materials for Controlling Mesenchymal Stem Cell Fate. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2020. [DOI: 10.1007/s40883-020-00182-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Narumi Y, Iwai R, Takagi M. Recovery of human mesenchymal stem cells grown on novel microcarrier coated with thermoresponsive polymer. J Artif Organs 2020; 23:358-364. [PMID: 32656667 DOI: 10.1007/s10047-020-01186-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 06/14/2020] [Indexed: 12/01/2022]
Abstract
The cultivation of cells on microcarriers (MCs) in stirred suspension system is useful method for the large-scale culture of human mesenchymal stem cells (hMSCs) for allogenic transplantation. To harvest hMSCs from MCs without using proteolytic enzyme treatment but by lowering temperature, polystyrene MCs coated with a copolymer called CAT having zwitterionic and thermoresponsive characteristics, which has a lower critical solution temperature (LCST) in the range of 28-32 ℃, were developed and compared with those coated with poly(N-isopropylacrylamide) (PNIPAM), which has an LCST almost the same as that of the CAT copolymer. A preliminary study using polystyrene dishes coated with the CAT copolymer at various densities showed superior adhesion efficiency and cell growth compared with those coated with PNIPAM; however, the rate of cell recovery by lowering the temperature to 24 ℃ was only about 80% in both cases. Although cells grew on polystyrene MCs coated with PNIPAM (0.64-16 µg/cm2) and on those coated with CAT (0.0050-1.0 µg/cm2), the cell recovery rate at 24 ℃ was lower than 20%. The decrease in recovery temperature from 24 to 4 ℃ resulted in about 50% cell recovery from CAT-coated (0.010-0.10 µg/cm2) MC, whereas the rate of cell recovery from PNIPAM-coated MC remained at about 20%. CAT (0.20 µg/cm2) coating after treatment of polystyrene MCs with oxygen plasma discharge increased the cell recovery rate to 72% at 4 ℃. Consequently, the combination of oxygen plasma discharge treatment and CAT coating of polystyrene MCs might provide not only adhesion efficiency and growth of MSCs comparable to those on polystyrene MCs without any treatment but also a high cell recover rate of more than 70%.
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Affiliation(s)
- Yuki Narumi
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita-ku, N13W8, Sapporo, 060-8628, Japan
| | - Ryosuke Iwai
- Institute of Frontier Science and Technology, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama-shi, 700-0005, Japan
| | - Mutsumi Takagi
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita-ku, N13W8, Sapporo, 060-8628, Japan.
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12
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Tang S, Zhang F, Gong H, Wei F, Zhuang J, Karshalev E, Esteban-Fernández de Ávila B, Huang C, Zhou Z, Li Z, Yin L, Dong H, Fang RH, Zhang X, Zhang L, Wang J. Enzyme-powered Janus platelet cell robots for active and targeted drug delivery. Sci Robot 2020; 5:5/43/eaba6137. [DOI: 10.1126/scirobotics.aba6137] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/30/2020] [Indexed: 12/14/2022]
Abstract
Transforming natural cells into functional biocompatible robots capable of active movement is expected to enhance the functions of the cells and revolutionize the development of synthetic micromotors. However, present cell-based micromotor systems commonly require the propulsion capabilities of rigid motors, external fields, or harsh conditions, which may compromise biocompatibility and require complex actuation equipment. Here, we report on an endogenous enzyme-powered Janus platelet micromotor (JPL-motor) system prepared by immobilizing urease asymmetrically onto the surface of natural platelet cells. This Janus distribution of urease on platelet cells enables uneven decomposition of urea in biofluids to generate enhanced chemophoretic motion. The cell surface engineering with urease has negligible impact on the functional surface proteins of platelets, and hence, the resulting JPL-motors preserve the intrinsic biofunctionalities of platelets, including effective targeting of cancer cells and bacteria. The efficient propulsion of JPL-motors in the presence of the urea fuel greatly enhances their binding efficiency with these biological targets and improves their therapeutic efficacy when loaded with model anticancer or antibiotic drugs. Overall, asymmetric enzyme immobilization on the platelet surface leads to a biogenic microrobotic system capable of autonomous movement using biological fuel. The ability to impart self-propulsion onto biological cells, such as platelets, and to load these cellular robots with a variety of functional components holds considerable promise for developing multifunctional cell-based micromotors for a variety of biomedical applications.
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Affiliation(s)
- Songsong Tang
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Fangyu Zhang
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Hua Gong
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Fanan Wei
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Jia Zhuang
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Emil Karshalev
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | | | - Chuying Huang
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Zhidong Zhou
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Zhengxing Li
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Lu Yin
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Haifeng Dong
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Ronnie H. Fang
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Liangfang Zhang
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
| | - Joseph Wang
- Department of NanoEngineering and Chemical Engineering Program, University of California San Diego, La Jolla, CA 92093, USA
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13
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Wang Y, Xiao Y, Long S, Fan Y, Zhang X. Role of N-Cadherin in a Niche-Mimicking Microenvironment for Chondrogenesis of Mesenchymal Stem Cells In Vitro. ACS Biomater Sci Eng 2020; 6:3491-3501. [PMID: 33463167 DOI: 10.1021/acsbiomaterials.0c00149] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
During the development of natural cartilage, mesenchymal condensation is the starting event of chondrogenesis, and mesenchymal stem cells (MSCs) experienced a microenvironment transition from primarily cell-cell interactions to a later stage, where cell-extracellular matrix (ECM) interactions dominate. Although micromass pellet culture has been developed to mimic mesenchymal condensation in vitro, the molecular mechanism remains elusive, and the transition from cell-cell to cell-ECM interactions has been poorly recapitulated. In this study, we first constructed MSC microspheres (MMs) and investigated their chondrogenic differentiation with functional blocking of N-cadherin. The results showed that early cartilage differentiation and cartilage-specific matrix deposition of MSCs in the group with the N-cadherin antibody were significantly postponed. Next, poly(l-lysine) treatment was transiently applied to promote the expression of N-cadherin gene, CDH2, and the treatment-promoted MSC chondrogenesis. Upon one-day culture in MMs with established cell-cell adhesions, collagen hydrogel-encapsulated MMs (CMMs) were constructed to simulate the cell-ECM interactions, and the collagen microenvironment compensated the inhibitory effects from N-cadherin blocking. Surprisingly, chondrogenic-differentiated cell migration, which has important implications in cartilage repair and integration, was found in the CMMs without N-cadherin blocking. In conclusion, our study demonstrated that N-cadherin plays the critical role in early mesenchymal condensation, and the collagen hydrogel provides a supportive microenvironment for late chondrogenic differentiation. Therefore, sequential presentations of cell-cell adhesion and cell-ECM interaction in an engineered microenvironment seem to be a promising strategy to facilitate MSC chondrogenic differentiation.
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Affiliation(s)
- Yonghui Wang
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning 530021, China
| | - Yun Xiao
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Shihe Long
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Yujiang Fan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Xingdong Zhang
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Nanning 530021, China.,National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
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14
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Sharma A, Goring A, Staines KA, Emery RJ, Pitsillides AA, Oreffo RO, Mahajan S, Clarkin CE. Raman spectroscopy links differentiating osteoblast matrix signatures to pro-angiogenic potential. Matrix Biol Plus 2020; 5:100018. [PMID: 33543015 PMCID: PMC7852201 DOI: 10.1016/j.mbplus.2019.100018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 08/21/2019] [Accepted: 10/09/2019] [Indexed: 01/25/2023] Open
Abstract
Mineralization of bone is achieved by the sequential maturation of the immature amorphous calcium phase to mature hydroxyapatite (HA) and is central in the process of bone development and repair. To study normal and dysregulated mineralization in vitro, substrates are often coated with poly-l-lysine (PLL) which facilitates cell attachment. This study has used Raman spectroscopy to investigate the effect of PLL coating on osteoblast (OB) matrix composition during differentiation, with a focus on collagen specific proline and hydroxyproline and precursors of HA. Deconvolution analysis of murine derived long bone OB Raman spectra revealed collagen species were 4.01-fold higher in OBs grown on PLL. Further, an increase of 1.91-fold in immature mineral species (amorphous calcium phosphate) was coupled with a 9.32-fold reduction in mature mineral species (carbonated apatite) on PLL versus controls. These unique low mineral signatures identified in OBs were linked with reduced alkaline phosphatase enzymatic activity, reduced Alizarin Red staining and altered osteogenic gene expression. The promotion of immature mineral species and restriction of mature mineral species of OB grown on PLL were linked to increased cell viability and pro-angiogenic vascular endothelial growth factor (VEGF) production. These results demonstrate the utility of Raman spectroscopy to link distinct matrix signatures with OB maturation and VEGF release. Importantly, Raman spectroscopy could provide a label-free approach to clinically assess the angiogenic potential of bone during fracture repair or degenerative bone loss.
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Key Words
- ACP, amorphous calcium phosphate
- ALP, tissue non-specific alkaline phosphatase
- CAP, carbonated apatite
- CCEC, collagenase-collagenase-EDTA-collagenase
- ECM, extracellular matrix
- HA, hydroxyapatite
- HBSS, Hank's balanced salt solution
- MV, matrix vesicles
- OB, osteoblast
- OCP, octacalcium phosphate
- Osteoblast mineralization
- PCA, principle component analysis
- PLL, poly-l-lysine
- Poly-l-lysine
- RT-qPCR, reverse transcription-quantiative PCR
- Raman spectroscopy
- VEGF
- VEGF, vascular endothelial growth factor
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Affiliation(s)
- Aikta Sharma
- School of Biological Sciences, Highfield Campus, University of Southampton, Southampton, SO17 1BJ, United Kingdom of Great Britain and Northern Ireland
| | - Alice Goring
- School of Biological Sciences, Highfield Campus, University of Southampton, Southampton, SO17 1BJ, United Kingdom of Great Britain and Northern Ireland
| | - Katherine A. Staines
- School of Applied Sciences, Sighthill Campus, Edinburgh Napier University, Edinburgh, EH11 4BN, United Kingdom of Great Britain and Northern Ireland
| | - Roger J.H. Emery
- Department of Surgery and Cancer, Faculty of Medicine, St Mary's Campus, Imperial College London, London, W2 1PG, United Kingdom of Great Britain and Northern Ireland
| | - Andrew A. Pitsillides
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London, NW1 0TU, United Kingdom of Great Britain and Northern Ireland
| | - Richard O.C. Oreffo
- Centre for Human Development, Stem Cell and Regeneration, Institute of Developmental Sciences, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, United Kingdom of Great Britain and Northern Ireland
| | - Sumeet Mahajan
- School of Chemistry and Institute for Life Sciences, Highfield Campus, University of Southampton, Southampton, SO17 1BJ, United Kingdom of Great Britain and Northern Ireland
| | - Claire E. Clarkin
- School of Biological Sciences, Highfield Campus, University of Southampton, Southampton, SO17 1BJ, United Kingdom of Great Britain and Northern Ireland
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15
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Juriga D, Sipos E, Hegedűs O, Varga G, Zrínyi M, Nagy KS, Jedlovszky-Hajdú A. Fully amino acid-based hydrogel as potential scaffold for cell culturing and drug delivery. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:2579-2593. [PMID: 31921537 PMCID: PMC6941446 DOI: 10.3762/bjnano.10.249] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 12/10/2019] [Indexed: 06/10/2023]
Abstract
Polymer hydrogels are ideal scaffolds for both tissue engineering and drug delivery. A great advantage of poly(amino acid)-based hydrogels is their high similarity to natural proteins. However, their expensive and complicated synthesis often limits their application. The use of poly(aspartic acid) (PASP) seems an appropriate solution for this problem due to the relatively cheap and simple synthesis of PASP. Using amino acids not only as building blocks in the polymer backbone but also as cross-linkers can improve the biocompatibility and the biodegradability of the hydrogel. In this paper, PASP cross-linked with cystamine (CYS) and lysine-methylester (LYS) was introduced as fully amino acid-based polymer hydrogel. Gels were synthesized employing six different ratios of CYS and LYS. The pH dependent swelling degree and the concentration of the elastically active chain were determined. After reduction of the disulfide bonds of CYS, the presence of thiol side groups was also detected. To determine the concentration of the reactive cross-linkers in the hydrogels, a new method based on the examination of the swelling behavior was established. Using metoprolol as a model drug, cell proliferation and drug release kinetics were studied at different LYS contents and in the presence of thiol groups. The optimal ratio of cross-linkers for the proliferation of periodontal ligament cells was found to be 60-80% LYS and 20-40% CYS. The reductive conditions resulted in an increased drug release due to the cleavage of disulfide bridges in the hydrogels. Consequently, these hydrogels provide new possibilities in the fields of both tissue engineering and controlled drug delivery.
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Affiliation(s)
- Dávid Juriga
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
| | - Evelin Sipos
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
| | - Orsolya Hegedűs
- Department of Oral Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
| | - Gábor Varga
- Department of Oral Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
| | - Miklós Zrínyi
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
| | - Krisztina S Nagy
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
- Department of Oral Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
| | - Angéla Jedlovszky-Hajdú
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad square 4, Budapest, Hungary
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16
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Lee MS, Byun HJ, Lee J, Jeoung DI, Kim YM, Lee H. Tetraspanin CD82 represses Sp1-mediated Snail expression and the resultant E-cadherin expression interrupts nuclear signaling of β-catenin by increasing its membrane localization. Cell Signal 2018; 52:83-94. [PMID: 30189244 DOI: 10.1016/j.cellsig.2018.09.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/21/2018] [Accepted: 09/01/2018] [Indexed: 11/20/2022]
Abstract
Tetraspanin membrane proteins form physical complexes with signaling molecules and have been suggested to influence the signaling events of associated molecules. Of the tetraspanin proteins, CD82 has been shown to promote homotypic cell-cell adhesion, which partially accounts for its role in suppressing cancer invasion and metastasis. We found here that CD82-induced cell-cell adhesion is attributed to increased E-cadherin expression through CD82-mediated downregulation of the E-cadherin repressor Snail. The Snail repression by CD82 resulted from the reduced binding of the Sp1 transcription factor to the Snail gene promoter. Notably, high CD82 expression did not allow the fibronectin matrix to induce Sp1 phosphorylation, implicating CD82 inhibition of the fibronectin-integrin signaling-dependent Sp1 activation. Meanwhile, E-cadherin upregulated by CD82 pulled β-catenin up to the membrane region, and consequently reduced the amount of cytoplasmic β-catenin that was able to move into to the nucleus. The Wnt signal-induced nuclear translocation of β-catenin was also inhibited by the CD82 function of upregulating E-cadherin. Overall, high CD82 expression was likely to suppress fibronectin adhesion-induced Sp1 activation signaling for Snail expression, resulting in continuous E-cadherin expression, which contributed not only to the maintenance of strong cell-cell adhesion but also to the blockage of nuclear β-catenin signaling.
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Affiliation(s)
- Moon-Sung Lee
- BIT Medical Convergence Graduate Program, Kangwon National University, Chunchon, Kangwon-do, 24341, Republic of Korea
| | - Hee-Jung Byun
- Department of Biological Sciences, Kangwon National University, Chunchon, Kangwon-do, 24341, Republic of Korea
| | - Jaeseob Lee
- Department of Biological Sciences, Kangwon National University, Chunchon, Kangwon-do, 24341, Republic of Korea
| | - Doo-Il Jeoung
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chunchon, Kangwon-do, 24341, Republic of Korea
| | - Young-Myeong Kim
- Department of Molecular and Cellular Biochemistry, School of Medicine, Kangwon National University, Chunchon, Kangwon-do, 24341, Republic of Korea
| | - Hansoo Lee
- BIT Medical Convergence Graduate Program, Kangwon National University, Chunchon, Kangwon-do, 24341, Republic of Korea; Department of Biological Sciences, Kangwon National University, Chunchon, Kangwon-do, 24341, Republic of Korea.
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17
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Yuan B, Raucci MG, Fan Y, Zhu X, Yang X, Zhang X, Santin M, Ambrosio L. Injectable strontium-doped hydroxyapatite integrated with phosphoserine-tethered poly(epsilon-lysine) dendrons for osteoporotic bone defect repair. J Mater Chem B 2018; 6:7974-7984. [PMID: 32255042 DOI: 10.1039/c8tb02526f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The control of the inflammatory response induced by the implantation of foreign biomaterials is fundamental in determining tissue healing. It has been shown that the activation of specific macrophage pathways upon contact with a biomaterial can lead either to a chronic inflammation preventing a physiological tissue repair or to an improved tissue healing. In the case of bone repair, calcium phosphate cements with good osteoconductivity properties have been successfully applied in bone defect filling and repair, but poor handling properties, insufficient viscous flow and unmatched degradation rate are still problems that remain unsolved. In this study, a strontium-doped hydroxyapatite (HA) gel was modified by integrating branched poly(epsilon-lysine) dendrons with third-generation branches exposing phosphoserine (SrHA/G3-K PS). The interaction of this material with macrophages was investigated in vitro, focusing on the secretion and gene expression of specific pro-inflammatory cytokines. Our results showed that the addition of strontium and G3-K PS to HA sol-gel could down-regulate the gene expression of inflammatory factors such as IL-1β, TNF-α and MCP-1, while increasing the gene expression of IL-6, a cytokine known for its osteogenic effect. These results were further confirmed by ELISA test of the respective protein concentrations. When exposed to supernatants of macrophage culture in the presence of strontium and G3-K PS, osteoblast viability was promoted with elevated osteogenic gene markers, in terms of OPG, ALP, OCN and COL-I. In vivo implantation experiments using an osteoporotic rat model with bone defect further confirmed that the addition of G3-K PS to HA could dramatically promote new bone regeneration. Although the introduction of strontium improved the degradation properties of the injectable materials, no positive effect on promoting in vivo bone regeneration was observed.
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Affiliation(s)
- Bo Yuan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
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18
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Momtazi L, Dartt DA, Nilsen O, Eidet JR. Molecular layer deposition builds biocompatible substrates for epithelial cells. J Biomed Mater Res A 2018; 106:3090-3098. [DOI: 10.1002/jbm.a.36499] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 05/29/2018] [Accepted: 06/27/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Leva Momtazi
- Department of Chemistry; University of Oslo; P.O.Box 1033 Blindern Oslo, NO, N-0315, Oslo Norway
| | - Darlene A. Dartt
- Schepens Eye Research Institute, Massachusetts Eye and Ear; Department of Ophthalmology, Harvard Medical School; 20 Staniford, St. Boston Massachusetts
| | - Ola Nilsen
- Department of Chemistry; University of Oslo; P.O.Box 1033 Blindern Oslo, NO, N-0315, Oslo Norway
| | - Jon Roger Eidet
- Department of Ophthalmology; Oslo University Hospital; Kirkeveien 166, 0407, Oslo Norway
- Department of Ophthalmology; Hospital of Southern Norway; Arendal, Sykehusveien 1, 4838, Arendal Norway
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19
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The metastasis suppressor CD82/KAI1 inhibits fibronectin adhesion-induced epithelial-to-mesenchymal transition in prostate cancer cells by repressing the associated integrin signaling. Oncotarget 2018; 8:1641-1654. [PMID: 27926483 PMCID: PMC5352085 DOI: 10.18632/oncotarget.13767] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/14/2016] [Indexed: 11/25/2022] Open
Abstract
The transmembrane protein CD82/KAI1 suppresses the metastatic potential of various cancer cell types. Moreover, decrease or loss of CD82 expression is closely associated with malignancy and poor prognosis in many human cancers including prostate cancer. Despite intense scrutiny, the mechanisms underlying the metastasis-suppressing role of CD82 are still not fully understood. Here, we found that a fibronectin matrix induced mesenchymal phenotypes in human prostate cancer cells with no or low CD82 expression levels. However, high CD82 expression rendered prostate cancer cells to have intensified epithelial characteristics upon fibronectin engagement, along with decreased cell motility and invasiveness. The CD82 function of inhibiting fibronectin-induced epithelial-to-mesenchymal transition (EMT) was dependent not only on CD82 interactions with fibronectin-binding α3β1/α5β1 integrins but also on the integrin-mediated intracellular signaling events. Notably, CD82 attenuated the FAK-Src and ILK pathways downstream of the fibronectin-receptor integrins. Immunofluorescence staining of human prostate cancer tissue specimens illustrated a negative association of CD82 with EMT-related gene expression as well as prostate malignancy. Altogether, these results suggest that CD82 suppresses EMT in prostate cancer cells adhered to the fibronectin matrix by repressing adhesion signaling through lateral interactions with the associated α3β1 and α5β1 integrins, leading to reduced cell migration and invasive capacities.
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20
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Yamaoka T, Hirata M, Dan T, Yamashita A, Otaka A, Nakaoki T, Miskon A, Kakinoki S, Mahara A. Individual evaluation of cardiac marker expression and self-beating during cardiac differentiation of P19CL6 cells on different culture substrates. J Biomed Mater Res A 2017; 105:1166-1174. [DOI: 10.1002/jbm.a.35977] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 10/13/2016] [Accepted: 12/06/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Tetsuji Yamaoka
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
- JST-CREST; 5 Sanbancho Chiyoda-ku Tokyo 102-0075 Japan
| | - Mitsuhi Hirata
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
- JST-CREST; 5 Sanbancho Chiyoda-ku Tokyo 102-0075 Japan
| | - Takaaki Dan
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
- Department of Materials Chemistry; Ryukoku University; 1-5 Seta Otsu Shiga 520-2194 Japan
| | - Atsushi Yamashita
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
- JST-CREST; 5 Sanbancho Chiyoda-ku Tokyo 102-0075 Japan
| | - Akihisa Otaka
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
| | - Takahiko Nakaoki
- Department of Materials Chemistry; Ryukoku University; 1-5 Seta Otsu Shiga 520-2194 Japan
| | - Azizi Miskon
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
| | - Sachiro Kakinoki
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
- JST-CREST; 5 Sanbancho Chiyoda-ku Tokyo 102-0075 Japan
| | - Atsushi Mahara
- Department of Biomedical Engineering; National Cerebral and Cardiovascular Center Research Institute; 5-7-1 Fujishirodai Suita Osaka 565-8565 Japan
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21
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Dendrigraft polylysine coated‐poly(glycolic acid) fibrous scaffolds for hippocampal neurons. J Biomed Mater Res A 2016; 104:2744-50. [DOI: 10.1002/jbm.a.35807] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 05/27/2016] [Accepted: 06/16/2016] [Indexed: 01/07/2023]
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22
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Lam J, Clark EC, Fong ELS, Lee EJ, Lu S, Tabata Y, Mikos AG. Evaluation of cell-laden polyelectrolyte hydrogels incorporating poly(L-Lysine) for applications in cartilage tissue engineering. Biomaterials 2016; 83:332-46. [PMID: 26799859 PMCID: PMC4754156 DOI: 10.1016/j.biomaterials.2016.01.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/26/2015] [Accepted: 01/01/2016] [Indexed: 12/21/2022]
Abstract
To address the lack of reliable long-term solutions for cartilage injuries, strategies in tissue engineering are beginning to leverage developmental processes to spur tissue regeneration. This study focuses on the use of poly(L-lysine) (PLL), previously shown to up-regulate mesenchymal condensation during developmental skeletogenesis in vitro, as an early chondrogenic stimulant of mesenchymal stem cells (MSCs). We characterized the effect of PLL incorporation on the swelling and degradation of oligo(poly(ethylene) glycol) fumarate) (OPF)-based hydrogels as functions of PLL molecular weight and dosage. Furthermore, we investigated the effect of PLL incorporation on the chondrogenic gene expression of hydrogel-encapsulated MSCs. The incorporation of PLL resulted in early enhancements of type II collagen and aggrecan gene expression and type II/type I collagen expression ratios when compared to blank controls. The presentation of PLL to MSCs encapsulated in OPF hydrogels also enhanced N-cadherin gene expression under certain culture conditions, suggesting that PLL may induce the expression of condensation markers in synthetic hydrogel systems. In summary, PLL can function as an inductive factor that primes the cellular microenvironment for early chondrogenic gene expression but may require additional biochemical factors for the generation of fully functional chondrocytes.
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Affiliation(s)
- Johnny Lam
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Elisa C Clark
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Eliza L S Fong
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Esther J Lee
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Steven Lu
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Yasuhiko Tabata
- Department of Biomaterials, Institute of Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX, USA.
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23
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Cao FY, Yin WN, Fan JX, Tao L, Qin SY, Zhuo RX, Zhang XZ. Evaluating the effects of charged oligopeptide motifs coupled with RGD on osteogenic differentiation of mesenchymal stem cells. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6698-6705. [PMID: 25748883 DOI: 10.1021/acsami.5b00064] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Mesenchymal stem cells, due to their multilineage differentiation potential, have emerged as a promising cell candidate for cell-based therapy. In recent years, biomaterials were artificially synthesized to control the differentiation of mesenchymal stem cells. In this study, a series of charged or neutral oligopeptide motifs coupled with RGD were synthesized and used for surface modification using quartz substrates as model. Cell behaviors on the modified surfaces with different charged oligopeptide motifs were studied. It was found that these different charged oligopeptide motifs coupled with RGD were biocompatible for cell proliferation and adhesion. Moreover, it was demonstrated that the positively charged oligopeptide motif could inhibit osteogenic differentiation, while the negatively charged and neutral oligopeptide motifs could enhance osteogenic differentiation in the presence of RGD. This work may bring us enlightenment that different charged oligopeptide motifs coupled with RGD may be used for biomaterial surface modification for different stem cell-based therapies.
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24
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Huang X, Zhang Y, Yin G, Pu X, Liao X, Huang Z, Chen X, Yao Y. Tumor-targeted paclitaxel-loaded folate conjugated poly(ethylene glycol)-poly(L-lactide) microparticles produced by supercritical fluid technology. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:95. [PMID: 25649516 DOI: 10.1007/s10856-015-5447-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 12/24/2014] [Indexed: 06/04/2023]
Abstract
The new biodegradable diblock copolymers poly(ethylene glycol)-poly(L-lactide) (PEG-PLLA) were synthesized and were chemically conjugated with folate (FA) in the PEG terminal ends to form FA-PEG-PLLA. Then the hydrophobic drug paclitaxel (PTX) loaded microparticles (PTX/FA-PEG-PLLA) were produced via solution enhanced dispersion by supercritical fluids (SEDS). These microparticles exhibited sphere-like shape by scanning electron microscopy observation and showed narrow hydrodynamic size distributions by dynamic light scattering measurement. Drug loading of PTX loaded microparticles was about 7-9% and the encapsulation efficiency of PTX loaded microparticles was about 18-23%. Flow cytometry and confocal laser scanning microscope analyses revealed that fluorescein isothiocyanate labeled FA conjugated microparticles presented significantly higher cellular uptake than FA-free group due to the FA-receptor-mediated endocytosis. In vitro cytotoxicity evaluation indicated that FA-PEG-PLLA expressed negligible cytotoxicity to mouse fibroblasts L929 cells. Moreover, PTX/FA-PEG-PLLA microparticles exhibited much higher anti-cancer efficacy than PTX/PEG-PLLA microparticles against human ovarian cancer SKOV3 cells. Nude mice xenografted with SKOV3 cells were used in biodistribution studies, the results indicated that an increased amount of PTX was accumulated in the tumor tissue deal with PTX/FA-PEG-PLLA microparticles. These results collectively suggested that PTX/FA-PEG-PLLA microparticles prepared by SEDS would have potential in anti-tumor applications as a tumor-targeted drug delivery formulation.
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Affiliation(s)
- Xiaobei Huang
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, People's Republic of China
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25
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Nagase K, Hatakeyama Y, Shimizu T, Matsuura K, Yamato M, Takeda N, Okano T. Thermoresponsive Cationic Copolymer Brushes for Mesenchymal Stem Cell Separation. Biomacromolecules 2015; 16:532-40. [DOI: 10.1021/bm501591s] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kenichi Nagase
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Yuri Hatakeyama
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
- Department
of Life Science and Medical Bioscience, School of Advanced Science
and Engineering, Waseda University (TWIns), 2-2 Wakamatsucho, Shinjuku, Tokyo 162-8480, Japan
| | - Tatsuya Shimizu
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Katsuhisa Matsuura
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Masayuki Yamato
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
| | - Naoya Takeda
- Department
of Life Science and Medical Bioscience, School of Advanced Science
and Engineering, Waseda University (TWIns), 2-2 Wakamatsucho, Shinjuku, Tokyo 162-8480, Japan
| | - Teruo Okano
- Institute
of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University (TWIns), 8-1 Kawadacho, Shinjuku,
Tokyo 162-8666, Japan
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26
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Xu Q, Li C, Kang Y, Zhang Y. Long term effects of substrate stiffness on the development of hMSC mechanical properties. RSC Adv 2015. [DOI: 10.1039/c5ra17233k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Micropipette aspiration of hMSCs cultured on different PDMS substrates showed that cells aligned their mechanical properties with the substrate stiffness and cell moduli always displayed a non-monotonic trend along culture time.
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Affiliation(s)
- Qinwei Xu
- School of Mechanical and Aerospace Engineering
- Nanyang Technological University
- Singapore
| | - Cheng Li
- School of Mechanical and Aerospace Engineering
- Nanyang Technological University
- Singapore
- Singapore Centre for Environmental Life Sciences Engineering
- Interdisciplinary Graduate School
| | - Yuejun Kang
- School of Chemical and Biological Engineering
- Nanyang Technological University
- Singapore
| | - Yilei Zhang
- School of Mechanical and Aerospace Engineering
- Nanyang Technological University
- Singapore
- Complexity Institute
- Nanyang Technological University
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27
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Influence of HepG2 cell shape on nanoparticle uptake. Microsc Res Tech 2014; 77:560-5. [DOI: 10.1002/jemt.22374] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 04/18/2014] [Indexed: 11/07/2022]
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28
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Fan Y, Hsiung M, Cheng C, Tzanakakis ES. Facile engineering of xeno-free microcarriers for the scalable cultivation of human pluripotent stem cells in stirred suspension. Tissue Eng Part A 2013; 20:588-99. [PMID: 24098972 DOI: 10.1089/ten.tea.2013.0219] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A prerequisite for the realization of human pluripotent stem cell (hPSC) therapies is the development of bioprocesses for generating clinically relevant quantities of undifferentiated hPSCs and their derivatives under xeno-free conditions. Microcarrier stirred-suspension bioreactors are an appealing modality for the scalable expansion and directed differentiation of hPSCs. Comparative analyses of commercially available microcarriers clearly show the need for developing synthetic substrates supporting the adhesion and growth of hPSCs in three-dimensional cultures under agitation-induced shear. Moreover, the low seeding efficiencies during microcarrier loading with hPSC clusters poses a significant process bottleneck. To that end, a novel protocol was developed increasing hPSC seeding efficiency from 30% to over 80% and substantially shortening the duration of microcarrier loading. Importantly, this method was combined with the engineering of polystyrene microcarriers by surface conjugation of a vitronectin-derived peptide, which was previously shown to support the growth of human embryonic stem cells. Cells proliferated on peptide-conjugated beads in static culture but widespread detachment was observed after exposure to stirring. This prompted additional treatment of the microcarriers with a synthetic polymer commonly used to enhance cell adhesion. hPSCs were successfully cultivated on these microcarriers in stirred suspension vessels for multiple consecutive passages with attachment efficiencies close to 40%. Cultured cells exhibited on average a 24-fold increase in concentration per 6-day passage, over 85% viability, and maintained a normal karyotype and the expression of pluripotency markers such as Nanog, Oct4, and SSEA4. When subjected to spontaneous differentiation in embryoid body cultures or directed differentiation to the three embryonic germ layers, the cells adopted respective fates displaying relevant markers. Lastly, engineered microcarriers were successfully utilized for the expansion and differentiation of hPSCs to mesoderm progeny in stirred suspension vessels. Hence, we demonstrate a strategy for the facile engineering of xeno-free microcarriers for stirred-suspension cultivation of hPSCs. Our findings support the use of microcarrier bioreactors for the scalable, xeno-free propagation and differentiation of human stem cells intended for therapies.
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Affiliation(s)
- Yongjia Fan
- 1 Department of Chemical and Biological Engineering, State University of New York at Buffalo , Buffalo, New York
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29
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Wu J, Mao Z, Han L, Xi J, Zhao Y, Gao C. Directional migration of vascular smooth muscle cells guided by synergetic surface gradient and chemical pattern of poly(ethylene glycol) brushes. J BIOACT COMPAT POL 2013. [DOI: 10.1177/0883911513506665] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Directional migration of cells in vitro can mimic corresponding biological events in vivo, which provides a way to determine the cascade responses in the tissue regeneration process and develop novel criteria for the design of tissue-inductive biomaterials. In this work, a density gradient of methoxy poly(ethylene glycol) brushes (from 0.37 to 0.95 chains/nm2) on plain and striped pattern surfaces was fabricated, using a dynamically controlled reaction process, and characterized by X-ray photoelectron spectroscopy and quartz crystal microbalance with dissipation. Adhesion and migration behavior of vascular smooth muscle cells were studied on the gradient and gradient-patterned surfaces. The vascular smooth muscle cells exhibited preferential orientation and enhanced directional migration on the gradient surface toward the lower end of the methoxy poly(ethylene glycol) density. By introducing methoxy poly(ethylene glycol) chemical striped patterns in parallel with the gradient direction on the surface, the extent of cell orientation and directional migration were significantly improved. Due to the synergetic effects of surface methoxy poly(ethylene glycol) striped patterns and gradient cues, almost all cells were oriented, and 67% of the cells were observed to move unidirectionally.
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Affiliation(s)
- Jindan Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhengwei Mao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Lulu Han
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Jiabin Xi
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Yizhi Zhao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
- State Key Laboratory of Diagnosis and Treatment for Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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30
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Lorion C, Faye C, Maret B, Trimaille T, Régnier T, Sommer P, Debret R. Biosynthetic support based on dendritic poly(L-lysine) improves human skin fibroblasts attachment. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 25:136-49. [DOI: 10.1080/09205063.2013.843966] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Lynge ME, Laursen MB, Hosta-Rigau L, Jensen BEB, Ogaki R, Smith AAA, Zelikin AN, Städler B. Liposomes as drug deposits in multilayered polymer films. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2967-75. [PMID: 23514370 DOI: 10.1021/am4006868] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The ex vivo growth of implantable hepatic or cardiac tissue remains a challenge and novel approaches are highly sought after. We report an approach to use liposomes embedded within multilayered films as drug deposits to deliver active cargo to adherent cells. We verify and characterize the assembly of poly(l-lysine) (PLL)/alginate, PLL/poly(l-glutamic acid), PLL/poly(methacrylic acid) (PMA), and PLL/cholesterol-modified PMA (PMAc) films, and assess the myoblast and hepatocyte adhesion to these coatings using different numbers of polyelectrolyte layers. The assembly of liposome-containing multilayered coatings is monitored by QCM-D, and the films are visualized using microscopy. The myoblast and hepatocyte adhesion to these films using PLL/PMAc or poly(styrenesulfonate) (PSS)/poly(allyl amine hydrochloride) (PAH) as capping layers is evaluated. Finally, the uptake of fluorescent lipids from the surface by these cells is demonstrated and compared. The activity of this liposome-containing coating is confirmed for both cell lines by trapping the small cytotoxic compound thiocoraline within the liposomes. It is shown that the biological response depends on the number of capping layers, and is different for the two cell lines when the compound is delivered from the surface, while it is similar when administered from solution. Taken together, we demonstrate the potential of liposomes as drug deposits in multilayered films for surface-mediated drug delivery.
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Affiliation(s)
- Martin E Lynge
- iNANO Interdisciplinary Nanoscience Centre, Aarhus University, Aarhus 8000, Denmark
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32
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Induction of mesenchymal stem cell chondrogenesis by polyacrylate substrates. Acta Biomater 2013; 9:6041-51. [PMID: 23237986 PMCID: PMC3594746 DOI: 10.1016/j.actbio.2012.12.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 12/04/2012] [Accepted: 12/05/2012] [Indexed: 12/26/2022]
Abstract
Mesenchymal stem cells (MSCs) can generate chondrocytes in vitro, but typically need to be cultured as aggregates in the presence of transforming growth factor beta (TGF-β), which makes scale-up difficult. Here we investigated if polyacrylate substrates modelled on the functional group composition and distribution of the Arg-Gly-Asp (RGD) integrin-binding site could induce MSCs to undergo chondrogenesis in the absence of exogenous TGF-β. Within a few days of culture on the biomimetic polyacrylates, both mouse and human MSCs, and a mesenchymal-like mouse-kidney-derived stem cell line, began to form multi-layered aggregates and started to express the chondrocyte-specific markers, Sox9, collagen II and aggrecan. Moreover, collagen II tended to be expressed in the centre of the aggregates, similarly to developing limb buds in vivo. Surface analysis of the substrates indicated that those with the highest surface amine content were most effective at promoting MSC chondrogenesis. These results highlight the importance of surface group functionality and the distribution of those groups in the design of substrates to induce MSC chondrogenesis.
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33
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Simmons CS, Ribeiro AJS, Pruitt BL. Formation of composite polyacrylamide and silicone substrates for independent control of stiffness and strain. LAB ON A CHIP 2013; 13:646-9. [PMID: 23287818 PMCID: PMC3605189 DOI: 10.1039/c2lc41110e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cells that line major tissues in the body such as blood vessels, lungs and gastrointestinal tract experience deformation from mechanical strain with our heartbeat, breathing, and other daily activities. Tissues also remodel in both development and disease, changing their mechanical properties. Taken together, cells can experience vastly different mechanical cues resulting from the combination of these interdependent stimuli. To date, most studies of cellular mechanotransduction have been limited to assays in which variations in substrate stiffness and strain were not combined. Here, we address this technological gap by implementing a method that can simultaneously tune both substrate stiffness and mechanical strain. Substrate stiffness is controlled with different monomer and crosslinker ratios during polyacrylamide gel polymerization, and strain is transferred from the underlying silicone platform when stretched. We demonstrate this platform with polyacrylamide gels with elastic moduli at 6 kPa and 20 kPa in combination with two different silicone formulations. The gels remain attached with up to 50% applied strains. To validate strain transfer through the gels into cells, we employ particle-tracking methods and observe strain transmission via cell morphological changes.
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Affiliation(s)
- Chelsey S. Simmons
- Department of Mechanical Engineering and Cardiovascular Institute, Stanford University
| | | | - Beth L. Pruitt
- Department of Mechanical Engineering and Cardiovascular Institute, Stanford University
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34
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Passuello T, Pedroni M, Piccinelli F, Polizzi S, Marzola P, Tambalo S, Conti G, Benati D, Vetrone F, Bettinelli M, Speghini A. PEG-capped, lanthanide doped GdF3 nanoparticles: luminescent and T2 contrast agents for optical and MRI multimodal imaging. NANOSCALE 2012; 4:7682-7689. [PMID: 23117700 DOI: 10.1039/c2nr31796f] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A facile method for the synthesis of water dispersible Er(3+)/Yb(3+) and Tm(3+)/Yb(3+) doped upconverting GdF(3) nanoparticles is reported. Strong upconversion emissions are observed in the red (for Er/Yb doped) and near-infrared (for Tm/Yb doped) regions upon laser excitation at 980 nm. The PEG coating ensures a good dispersion of the system in water and reduces the radiationless de-excitation of the excited states of the Er(3+) and Tm(3+) ions by water molecules. The r(2) relaxivity values are quite high with respect to the common T(2)-relaxing agents (22.6 ± 3.4 mM(-1) s(-1) and 15.8 ± 3.4 mM(-1) s(-1) for the Tm/Yb and Er/Yb doped samples, respectively), suggesting that the present NPs can be interesting as T(2) weighted contrast agents for proton MRI purpose. Preliminary experiments conducted in vitro, in stem cell cultures, and in vivo, after subcutaneous injection of the lanthanide-doped GdF(3) NPs, indicate scarce toxic effects. After an intravenous injection in mice, the GdF(3) NPs localize mainly in the liver. The present results indicate that the present Er(3+)/Yb(3+) and Tm(3+)/Yb(3+) doped GdF(3) NPs are suitable candidates to be efficiently used as bimodal probes for both in vitro and in vivo optical and magnetic resonance imaging.
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Affiliation(s)
- Tiziana Passuello
- Dipartimento di Biotecnologie, Università di Verona and INSTM, UdR Verona, Strada Le Grazie 15, I-37134 Verona, Italy
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35
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Galli C, Piemontese M, Meikle ST, Santin M, Macaluso GM, Passeri G. Biomimetic coating with phosphoserine-tethered poly(epsilon-lysine) dendrons on titanium surfaces enhances Wnt and osteoblastic differentiation. Clin Oral Implants Res 2012; 25:e133-9. [DOI: 10.1111/clr.12075] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2012] [Indexed: 01/22/2023]
Affiliation(s)
- Carlo Galli
- Department of Biotechnology; Biomedical and Translational Sciences, University of Parma; Parma Italy
| | - Marilina Piemontese
- Department of Clinical and Experimental Medicine; University of Parma; Parma Italy
| | - Steven T. Meikle
- Brighton Studies in Tissue-mimicry and Aided Regeneration; School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton UK
| | - Matteo Santin
- Brighton Studies in Tissue-mimicry and Aided Regeneration; School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton UK
| | - Guido M. Macaluso
- Department of Biotechnology; Biomedical and Translational Sciences, University of Parma; Parma Italy
| | - Giovanni Passeri
- Department of Clinical and Experimental Medicine; University of Parma; Parma Italy
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36
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Leigh SJ, Gilbert HTJ, Barker IA, Becker JM, Richardson SM, Hoyland JA, Covington JA, Dove AP. Fabrication of 3-Dimensional Cellular Constructs via Microstereolithography Using a Simple, Three-Component, Poly(Ethylene Glycol) Acrylate-Based System. Biomacromolecules 2012; 14:186-92. [DOI: 10.1021/bm3015736] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Hamish T. J. Gilbert
- Regenerative Medicine, Institute of Inflammation
and Repair, Faculty of Medical and Human
Sciences, The University of Manchester,
Stopford Building, Oxford Road, Manchester, M13 9PT, United Kingdom
| | | | | | - Stephen M. Richardson
- Regenerative Medicine, Institute of Inflammation
and Repair, Faculty of Medical and Human
Sciences, The University of Manchester,
Stopford Building, Oxford Road, Manchester, M13 9PT, United Kingdom
| | - Judith A. Hoyland
- Regenerative Medicine, Institute of Inflammation
and Repair, Faculty of Medical and Human
Sciences, The University of Manchester,
Stopford Building, Oxford Road, Manchester, M13 9PT, United Kingdom
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37
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Lee TY, Chen WS, Huang YA, Liu TW, Hwang E, Tseng CP. Application of aurintricarboxylic acid for the adherence of mouse P19 neurons and primary hippocampal neurons to noncoated surface in serum-free culture. Biotechnol Prog 2012; 28:1566-74. [PMID: 23011767 DOI: 10.1002/btpr.1638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 08/08/2012] [Indexed: 02/01/2023]
Abstract
Dissociated primary neuron culture has been the most widely used model systems for neuroscience research. Most of these primary neurons are cultured on adhesion matrix-coated surface to provide a proper environment for cell anchorage under serum-free conditions. In this study, we provide an alternative technique to promote the adhesions of these neurons using aurintricarboxylic acid (ATA), a nonpeptide compound, without surface manipulations. We first demonstrated that ATA could promote Chinese hamster ovary cell attachment and proliferation in serum-free medium in a dosage-dependent manner. We later showed that ATA significantly enhanced the attachment of the retinoic acid differentiated P19 mouse embryonal carcinoma (P19) neurons, with an optimal concentration around 30 μg/mL. A similar result was seen in primary hippocampal neurons, with an optimal ATA concentration around 15 μg/mL. Further morphological assessments revealed that the average neurite length and neuronal polarization were almost identical to that obtained using a conventional method with poly-L-lysine surface. The advantages of using the ATA treatment technique for immunochemical analysis are discussed.
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Affiliation(s)
- Tsung-Yih Lee
- Dept. of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
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38
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Choi SH, Jung SY, Yoo SM, Asahara T, Suh W, Kwon SM, Baek SH. Amine-enriched surface modification facilitates expansion, attachment, and maintenance of human cardiac-derived c-kit positive progenitor cells. Int J Cardiol 2012; 168:100-7. [PMID: 23046590 DOI: 10.1016/j.ijcard.2012.09.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 05/29/2012] [Accepted: 09/14/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Stem cells have a low expansion rate and are difficult to maintain in vitro. To overcome the problems of cardiovascular regeneration, we developed a novel method of stem cell cultivation in culture vessels with amine and carboxyl coatings. METHODS AND RESULTS We isolated cardiac stem/progenitor cells from infant-derived heart tissue by using c-kit antibody (human cardiac-derived c-kit positive progenitor cells; hCPC(c-kit+)); the cells differentiated into endothelial cells, smooth muscle cells, and cardiomyocytes. To characterize the effect of surface modification on hCPC(c-kit+) expansion, cellular attachment, c-kit expression maintenance, and cardiomyocyte differentiation, we tested hCPC(c-kit+) cultured on non-coated (control), amine-coated (amine), and carboxyl-coated (carboxyl) vessels. Ex vivo proliferation, c-kit maintenance, and cellular attachment were significantly enhanced in the amine group. The amine coating also increased procollagen type I (pro-COL1) expression and increased phosphorylation signals, such as focal adhesion kinase (FAK) and cytosolic Src, as well as enhanced ERK/CDK2 signaling. In addition, there was significant downregulation of the stress signal transducer, JNK, in the amine group. However, cardiomyogenesis remained unchanged in the control, amine, and carboxyl groups. CONCLUSIONS Although surface modifications had no effect on early induction cardiomyogenesis, amine-enriched surface modification may increase hCPC(c-kit+) expansion. The amine-enriched surface improved cellular proliferation and attachment during ex vivo hCPC(c-kit+) expansion, possibly by modulating intracellular signal transducers.
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Affiliation(s)
- Sung Hyun Choi
- Laboratory of Cardiovascular Regeneration, Division of Cardiovascular Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, South Korea.
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39
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Li Z, Guo X, Palmer AF, Das H, Guan J. High-efficiency matrix modulus-induced cardiac differentiation of human mesenchymal stem cells inside a thermosensitive hydrogel. Acta Biomater 2012; 8:3586-95. [PMID: 22729021 DOI: 10.1016/j.actbio.2012.06.024] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 06/15/2012] [Accepted: 06/15/2012] [Indexed: 12/13/2022]
Abstract
Mesenchymal stem cells (MSCs) experience an extremely low rate of cardiac differentiation after transplantation into infarcted hearts, in part due to the inability of stiff scar tissue to support differentiation. We hypothesized that delivering MSCs in a hydrogel with a modulus matched to that of native heart tissue should stimulate MSC differentiation into cardiac cells. We have developed a thermosensitive and injectable hydrogel suitable for the delivery of cells into the heart, and found that the appropriate gel modulus can differentiate MSCs into cardiac cells with high efficiency. The hydrogel was based on N-isopropylacrylamide, N-acryloxysuccinimide, acrylic acid and poly(trimethylene carbonate)-hydroxyethyl methacrylate. The hydrogel solution can be readily injected through needles commonly used for heart injection, and is capable of gelling within 7s at 37°C. The formed gels were highly flexible, with breaking strains (>300%) higher than that of native heart tissue and moduli within the range of native heart tissue (1-140 kPa). Controlling the concentration of the hydrogel solution resulted in hydrogels with three different moduli: 16, 45 and 65 kPa. The moduli were decoupled from the gel water content and oxygen diffusion, parameters that can also influence cell differentiation. MSCs survived in the hydrogels throughout the entire culture period, and it was observed that gel stiffness did not affect cell survival. After 14 days of culture, more than 76% of MSCs had differentiated into cardiac cells in the 45 and 65 kPa gels, as confirmed by the expression of cardiac markers at both the gene and protein levels. MSCs in the hydrogel with the 65 kPa modulus had the highest differentiation efficiency. The differentiated cells also developed calcium channels that imparted an electrophysiological property, and gap junctions for cell-cell communication. The efficiency of differentiation reported in this study was much higher than for the differentiation approaches described in the literature, such as chemical induction and co-culture of MSCs and cardiomyocytes. These results indicate that the novel hydrogel holds great promise for delivering MSCs into an infarcted heart for the generation of new heart tissue.
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Affiliation(s)
- Zhenqing Li
- Department of Materials Science & Engineering, The Ohio State University, Columbus, OH 43210, USA
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40
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Cai L, Lu J, Sheen V, Wang S. Optimal poly(L-lysine) grafting density in hydrogels for promoting neural progenitor cell functions. Biomacromolecules 2012; 13:1663-74. [PMID: 22533450 PMCID: PMC3547621 DOI: 10.1021/bm300381d] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Recently, we have developed a photopolymerizable poly(L-lysine) (PLL) that can be covalently incorporated into poly(ethylene glycol) diacrylate (PEGDA) hydrogels to improve their bioactivity by providing positive charges. To explore the potential of these PLL-grafted PEGDA hydrogels as a cell delivery vehicle and luminal filler in nerve guidance conduits for peripheral and central nerve regeneration, we varied the number of pendent PLL chains in the hydrogels by photo-cross-linking PEGDA with weight compositions of PLL (φ(PLL)) of 0, 1, 2, 3, and 5%. We further investigated the effect of PLL grafting density on E14 mouse neural progenitor cell (NPC) behavior including cell viability, attachment, proliferation, differentiation, and gene expression. The amount of actually grafted PLL and charge densities were characterized, showing a proportional increase with the feed composition φ(PLL). NPC viability in 3D hydrogels was significantly improved in a PLL grafting density-dependent manner at days 7 and 14 postencapsulation. Similarly, NPC attachment and proliferation were promoted on the PLL-grafted hydrogels with increasing φ(PLL) up to 2%. More intriguingly, NPC lineage commitment was dramatically altered by the amount of grafted PLL chains in the hydrogels. NPC differentiation demonstrated a parabolic or nonmonotonic dependence on φ(PLL), resulting in cells mostly differentiated toward mature neurons with extensive neurite formation and astrocytes rather than oligodendrocytes on the PLL-grafted hydrogels with φ(PLL) of 2%, whereas the neutral hydrogels and PLL-grafted hydrogels with higher φ(PLL) of 5% support NPC differentiation less. Gene expression of lineage markers further illustrated this trend, indicating that PLL-grafted hydrogels with an optimal φ(PLL) of 2% could be a promising cell carrier that promoted NPC functions for treatment of nerve injuries.
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Affiliation(s)
- Lei Cai
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996
| | - Jie Lu
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115
| | - Volney Sheen
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115
| | - Shanfeng Wang
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
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41
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Poly(2-acrylamido-2-methylpropanesulfonic acid) gel induces articular cartilage regeneration in vivo: Comparisons of the induction ability between single- and double-network gels. J Biomed Mater Res A 2012; 100:2244-51. [DOI: 10.1002/jbm.a.34165] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 02/16/2012] [Accepted: 03/01/2012] [Indexed: 11/07/2022]
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42
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Controlling the migration behaviors of vascular smooth muscle cells by methoxy poly(ethylene glycol) brushes of different molecular weight and density. Biomaterials 2011; 33:810-20. [DOI: 10.1016/j.biomaterials.2011.10.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2011] [Accepted: 10/10/2011] [Indexed: 02/01/2023]
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43
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Chien HW, Tan SF, Wei KL, Tsai WB. Modulation of the functions of osteoblast-like cells on poly(allylamine hydrochloride) and poly(acrylic acid) multilayer films. Colloids Surf B Biointerfaces 2011; 88:297-303. [PMID: 21798725 DOI: 10.1016/j.colsurfb.2011.07.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 06/17/2011] [Accepted: 07/04/2011] [Indexed: 01/02/2023]
Abstract
Deposition of layer-by-layer polyelectrolyte multilayer (PEM) films has been a widely applied surface modification technique to improve the biocompatibility of biomaterials. The objective of this study was to investigate the impact of the deposition of poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA) multilayer films on adhesion, growth and differentiation of osteoblasts-like MG63 cells. PAH and PAA were deposited sequentially onto tissue culture polystyrene at either pH 2.0 or pH 6.5 with 4-21 layers. While the MG63 cells attached poorly on the PAH/PAA multilayer films deposited at pH 2.0, while the cells adhered to the PEM films deposited at pH 6.5, depending on layer numbers. Cell adhesion, proliferation and osteogenic activities (alkaline phosphatase activity, expression of osteogenic marker genes and mineralization) were highest on the 4-layer PAH/PAA film and decreased with increasing layer numbers. On the other hand, the behavior of MG63 cells did not show any difference on the adjacent even and odd layers, except PEM4 and PEM5, i.e. the surface charges of the PAH/PAA multilayer films with over ten layers seem indifferent to osteoblastic functions. The results in this study suggested that the mechanical properties of PEM films may play a critical role in modulating the behavior of osteoblasts, providing guidance for application of PEM films to osteopaedic implants.
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Affiliation(s)
- Hsiu-Wen Chien
- National Taiwan University, Department of Chemical Engineering, Taipei, Taiwan
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Liu Y, Xu X, Ma X, Martin-Rendon E, Watt S, Cui Z. Cryopreservation of human bone marrow-derived mesenchymal stem cells with reduced dimethylsulfoxide and well-defined freezing solutions. Biotechnol Prog 2011; 26:1635-43. [PMID: 20572296 DOI: 10.1002/btpr.464] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The aim of this study is to investigate the feasibility of using well defined, serum-free freezing solutions with a reduced level of dimethylsulfoxide (DMSO) of 7.5, 5, and 2.5% (v/v) in the combination with polyethylene glycol (PEG) or trehalose to cryopreserve human bone marrow-derived mesenchymal stem cells (hBMSCs), a main source of stem cells for cell therapy and tissue engineering. The standard laboratory freezing protocol of around 1°C/min was used in the experiments. The efficiency of 1,2-propandiol on cryopreservation of hBMSCs was explored. We measured the post-thawing cell viability and early apoptotic behaviors, cell metabolic activities, and growth dynamics. Cell morphology and osteogenic, adipogenic and chondrogenic differentiation capability were also tested after cryopreservation. The results showed that post-thawing viability of hBMSCs in 7.5% DMSO (v/v), 2.5% PEG (w/v), and 2% bovine serum albumin (BSA) (w/v) was comparable with that obtained in conventional 10% DMSO, that is, 82.9 ± 4.3% and 82.7 ± 3.7%, respectively. In addition, 5% DMSO (v/v) with 5% PEG (w/v) and 7.5% 1,2-propandiol (v/v) with 2.5% PEG (w/v) can provide good protection to hBMSCs when 2% albumin (w/v) is present. Enhanced cell viability was observed with the addition of albumin to all tested freezing solutions.
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Affiliation(s)
- Yang Liu
- Dalian R&D Center for Stem Cell and Tissue Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, PR China
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Chen Y, Bilgen B, Pareta RA, Myles AJ, Fenniri H, Ciombor DM, Aaron RK, Webster TJ. Self-Assembled Rosette Nanotube/Hydrogel Composites for Cartilage Tissue Engineering. Tissue Eng Part C Methods 2010; 16:1233-43. [DOI: 10.1089/ten.tec.2009.0400] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yupeng Chen
- Department of Chemistry, Brown University, Providence, Rhode Island
- Division of Engineering, Brown University, Providence, Rhode Island
| | - Bahar Bilgen
- Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Rajesh A. Pareta
- Division of Engineering, Brown University, Providence, Rhode Island
| | - Andrew J. Myles
- Department of Chemistry, National Institute for Nanotechnology, National Research Council, University of Alberta, Edmonton, Canada
| | - Hicham Fenniri
- Department of Chemistry, National Institute for Nanotechnology, National Research Council, University of Alberta, Edmonton, Canada
| | - Deborah McK. Ciombor
- Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Roy K. Aaron
- Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Thomas J. Webster
- Division of Engineering, Brown University, Providence, Rhode Island
- Department of Orthopaedics, Warren Alpert Medical School, Brown University, Providence, Rhode Island
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Nigro J, White JF, Ramshaw JA, Haylock DN, Nilsson SK, Werkmeister JA. The effect of bovine endosteum-derived particles on the proliferation of human mesenchymal stem cells. Biomaterials 2010; 31:5689-99. [DOI: 10.1016/j.biomaterials.2010.03.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Accepted: 03/21/2010] [Indexed: 01/22/2023]
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