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Kikkawa Y, Sugawara Y, Harashima N, Fujii S, Ikari K, Kumai J, Katagiri F, Hozumi K, Nomizu M. Identification of laminin α5 short arm peptides active for endothelial cell attachment and tube formation. J Pept Sci 2017; 23:666-673. [PMID: 28220599 DOI: 10.1002/psc.2987] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 01/03/2017] [Accepted: 02/01/2017] [Indexed: 12/23/2022]
Abstract
Laminin-511, a major component of endothelial basement membrane, consists of α5, β1, and γ1 chains. The short arm region of the α5 chain is a structural feature of endothelial laminins. In this study, we identified active sequences for human umbilical vein endothelial cells (HUVECs) using recombinant proteins and synthetic peptides. The short arm of the α5 chain contains three globular domains [laminin N-terminal globular domain, laminin 4 domain a, and laminin 4 domain b (LN, L4a, and L4b)] and three rod-like elements [laminin epidermal growth factor-like domain a, b, and c (LEa, LEb, and LEc)]. The cell attachment assay using recombinant proteins showed that RGD-independent cell attachment sites were localized in the α5LN-LEa domain. Further, we synthesized 70 peptides covering the amino acid sequences of the α5LN-LEa domain. Of the 70 peptides, A5-16 (mouse laminin α5 230-243: LENGEIVVSLVNGR) potently exhibited endothelial cell attachment activity. An active sequence analysis using N-terminally and C-terminally truncated A5-16 peptides showed that the nine-amino acid sequence IVVSLVNGR was critical for the endothelial cell attachment activity. Cell adhesion to the peptides was dependent on both cations and heparan sulfate. Further, the A5-16 peptide inhibited the capillary-like tube formation of HUVECs with the cells forming small clumps with short tubes. The eight-amino acid sequence EIVVSLVN in the A5-16 peptide was critical to inhibit HUVEC tube formation. This amino acid sequence could be useful for grafts and thus modulate endothelial cell behavior for vascular surgery. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
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Affiliation(s)
- Yamato Kikkawa
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Yumika Sugawara
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Nozomi Harashima
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Shogo Fujii
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Kazuki Ikari
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Jun Kumai
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Fumihiko Katagiri
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Kentaro Hozumi
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Motoyoshi Nomizu
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
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ÇELEBİ SALTIK B, ÖTEYAKA MÖ. Cardiac patch design: compatibility of nanofiber materials prepared byelectrospinning method with stem cells. Turk J Biol 2016. [DOI: 10.3906/biy-1506-82] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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3
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Herrick WG, Rattan S, Nguyen TV, Grunwald MS, Barney CW, Crosby AJ, Peyton SR. Smooth Muscle Stiffness Sensitivity is Driven by Soluble and Insoluble ECM Chemistry. Cell Mol Bioeng 2015; 8:333-348. [PMID: 26495043 DOI: 10.1007/s12195-015-0397-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Smooth muscle cell (SMC) invasion into plaques and subsequent proliferation is a major factor in the progression of atherosclerosis. During disease progression, SMCs experience major changes in their microenvironment, such as what integrin-binding sites are exposed, the portfolio of soluble factors available, and the elasticity and modulus of the surrounding vessel wall. We have developed a hydrogel biomaterial platform to examine the combined effect of these changes on SMC phenotype. We were particularly interested in how the chemical microenvironment affected the ability of SMCs to sense and respond to modulus. To our surprise, we observed that integrin binding and soluble factors are major drivers of several critical SMC behaviors, such as motility, proliferation, invasion, and differentiation marker expression, and these factors modulated the effect of stiffness on proliferation and migration. Overall, modulus only modestly affected behaviors other than proliferation, relative to integrin binding and soluble factors. Surprisingly, pathological behaviors (proliferation, motility) are not inversely related to SMC marker expression, in direct conflict with previous studies on substrates coupled with single extracellular matrix (ECM) proteins. A high-throughput bead-based ELISA approach and inhibitor studies revealed that differentiation marker expression is mediated chiefly via focal adhesion kinase (FAK) signaling, and we propose that integrin binding and FAK drive the transition from a migratory to a proliferative phenotype. We emphasize the importance of increasing the complexity of in vitro testing platforms to capture these subtleties in cell phenotypes and signaling, in order to better recapitulate important features of in vivo disease and elucidate potential context-dependent therapeutic targets.
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Affiliation(s)
- William G Herrick
- Department of Chemical Engineering, University of Massachusetts, 686 N. Pleasant Street, 159 Goessmann Laboratory, Amherst, MA 01003, USA
| | - Shruti Rattan
- Polymer Science and Engineering Department, University of Massachusetts, Conte Polymer Research Center, 120 Governors Dr., Amherst, MA 01003, USA
| | - Thuy V Nguyen
- Department of Chemical Engineering, University of Massachusetts, 686 N. Pleasant Street, 159 Goessmann Laboratory, Amherst, MA 01003, USA
| | - Michael S Grunwald
- Department of Chemical Engineering, University of Massachusetts, 686 N. Pleasant Street, 159 Goessmann Laboratory, Amherst, MA 01003, USA
| | | | - Alfred J Crosby
- Polymer Science and Engineering Department, University of Massachusetts, Conte Polymer Research Center, 120 Governors Dr., Amherst, MA 01003, USA
| | - Shelly R Peyton
- Department of Chemical Engineering, University of Massachusetts, 686 N. Pleasant Street, 159 Goessmann Laboratory, Amherst, MA 01003, USA
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Park MH, Yu Y, Moon HJ, Ko DY, Kim HS, Lee H, Ryu KH, Jeong B. 3D culture of tonsil-derived mesenchymal stem cells in poly(ethylene glycol)-poly(L-alanine-co-L-phenyl alanine) thermogel. Adv Healthc Mater 2014; 3:1782-91. [PMID: 24958187 DOI: 10.1002/adhm.201400140] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/01/2014] [Indexed: 01/04/2023]
Abstract
Poly(ethylene glycol)-poly(L-alanine-co-L-phenyl alanine) (PEG-PAF) aqueous solutions undergo sol-to-gel transition as the temperature increases. The transition is driven by the micelle aggregation involving the partial dehydration of the PEG block and the partial increase in β-sheet content of the PAF block. Tonsil-tissue-derived mesenchymal stem cells (TMSCs), a new stem cell resource, are encapsulated through the sol-to-gel transition of the TMSC-suspended PEG-PAF aqueous solutions. The encapsulated TMSCs are in vitro 3D cultured by using induction media supplemented with adipogenic, osteogenic, or chondrogenic factors, where the TMSCs preferentially undergo chondrogenesis with high expressions of type II collagen and sulfated glycosaminoglycan. As a feasibility study of the PEG-PAF thermogel for injectable tissue engineering, the TMSCs encapsulated in hydrogels are implanted in the subcutaneous layer of mice by injecting the TMSC suspended PEG-PAF aqueous solution. The in vivo studies also prove that TMSCs undergo chondrogenesis with high expression of the chondrogenic biomarkers. This study suggests that the TMSCs can be an excellent resource of MSCs, and the thermogelling PEG-PAF is a promising injectable tissue engineering scaffold, particularly for chondrogenic differentiation of the stem cells.
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Affiliation(s)
- Min Hee Park
- Department of Chemistry and Nano Science; Ewha Womans University; Ewha Global Top 5 Research Program; 52 Ewhayeodae-gil Seodaemun-gu Seoul 120-750 Korea
| | - Yeonsil Yu
- Departments of Molecular Medicine; Otorhinolaryngology - Head and Neck Surgery and Pediatrics; School of Medicine Ewha Womans University; Ewha Global Top 5 Research Program; Seoul Korea
| | - Hyo Jung Moon
- Department of Chemistry and Nano Science; Ewha Womans University; Ewha Global Top 5 Research Program; 52 Ewhayeodae-gil Seodaemun-gu Seoul 120-750 Korea
| | - Du Young Ko
- Department of Chemistry and Nano Science; Ewha Womans University; Ewha Global Top 5 Research Program; 52 Ewhayeodae-gil Seodaemun-gu Seoul 120-750 Korea
| | - Han Su Kim
- Departments of Molecular Medicine; Otorhinolaryngology - Head and Neck Surgery and Pediatrics; School of Medicine Ewha Womans University; Ewha Global Top 5 Research Program; Seoul Korea
| | - Hyukjin Lee
- College of Pharmacy, Graduate School of Pharmaceutical Science; Ewha Womans University; Ewha Global Top 5 Research Program; Seoul Korea
| | - Kyung Ha Ryu
- Departments of Molecular Medicine; Otorhinolaryngology - Head and Neck Surgery and Pediatrics; School of Medicine Ewha Womans University; Ewha Global Top 5 Research Program; Seoul Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nano Science; Ewha Womans University; Ewha Global Top 5 Research Program; 52 Ewhayeodae-gil Seodaemun-gu Seoul 120-750 Korea
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Boccafoschi F, Ramella M, Sibillano T, De Caro L, Giannini C, Comparelli R, Bandiera A, Cannas M. Human elastin polypeptides improve the biomechanical properties of three-dimensional matrices through the regulation of elastogenesis. J Biomed Mater Res A 2014; 103:1218-30. [DOI: 10.1002/jbm.a.35257] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 05/27/2014] [Accepted: 06/04/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Francesca Boccafoschi
- Department of Health Sciences; University of Piemonte Orientale “A. Avogadro”; 28100 Novara Italy
| | - Martina Ramella
- Department of Health Sciences; University of Piemonte Orientale “A. Avogadro”; 28100 Novara Italy
| | - Teresa Sibillano
- Institute of Crystallography; National Research Council; 70126 Bari Italy
| | - Liberato De Caro
- Institute of Crystallography; National Research Council; 70126 Bari Italy
| | - Cinzia Giannini
- Institute of Crystallography; National Research Council; 70126 Bari Italy
| | | | | | - Mario Cannas
- Department of Health Sciences; University of Piemonte Orientale “A. Avogadro”; 28100 Novara Italy
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Conconi MT, Borgio L, Di Liddo R, Sartore L, Dalzoppo D, Amistà P, Lora S, Parnigotto PP, Grandi C. Evaluation of vascular grafts based on polyvinyl alcohol cryogels. Mol Med Rep 2014; 10:1329-34. [PMID: 24969541 DOI: 10.3892/mmr.2014.2348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 02/27/2014] [Indexed: 11/06/2022] Open
Abstract
The present study designed and developed blood vessel substitutes (BVSs) composed of polyvinyl alcohol (PVA) cryogels. The in vitro results demonstrated that the coating of the polymer with lyophilized decellularized vascular matrix (DVM) greatly enhanced the adhesion of human umbilical vein endothelial cells (HUVECs). However, when PVA̸DVM BVSs were implanted into the abdominal aorta of Sprague‑Dawley rats, DVM was identified as a highly thrombogenic surface resulting in the mortality of all animals 3‑4 days after surgery. By contrast, all rats implanted with PVA survived and were sacrificed after 12 months. The luminal surface of the explanted grafts was completely covered by endothelial cells and the inner diameter was similar to that of the original vessel. In conclusion, the present study indicated that PVA may be considered as a promising biomaterial for the fabrication of artificial vessels.
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Affiliation(s)
- Maria Teresa Conconi
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua 35131, Italy
| | - Luca Borgio
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua 35131, Italy
| | - Rosa Di Liddo
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua 35131, Italy
| | - Leonardo Sartore
- Department of Plastic and Reconstructive Surgery, University of Padua, Padua 35131, Italy
| | - Daniele Dalzoppo
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua 35131, Italy
| | - Pietro Amistà
- Department of Neuroradiology, Hospital of Rovigo, Rovigo 45100, Italy
| | - Silvano Lora
- Foundation for Biology and Regenerative Medicine, TES‑Tissue Engineering and Signaling (ONLUS), Padua 35131, Italy
| | - Pier Paolo Parnigotto
- Foundation for Biology and Regenerative Medicine, TES‑Tissue Engineering and Signaling (ONLUS), Padua 35131, Italy
| | - Claudio Grandi
- Department of Pharmaceutical and Pharmacological Sciences, University of Padua, Padua 35131, Italy
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7
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Hayward CJ, Fradette J, Morissette Martin P, Guignard R, Germain L, Auger FA. Using human umbilical cord cells for tissue engineering: a comparison with skin cells. Differentiation 2014; 87:172-81. [PMID: 24930038 DOI: 10.1016/j.diff.2014.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 05/15/2014] [Indexed: 01/04/2023]
Abstract
The epithelial cells and Wharton׳s jelly cells (WJC) from the human umbilical cord have yet to be extensively studied in respect to their capacity to generate tissue-engineered substitutes for clinical applications. Our reconstruction strategy, based on the self-assembly approach of tissue engineering, allows the production of various types of living human tissues such as skin and cornea from a wide range of cell types originating from post-natal tissue sources. Here we placed epithelial cells and WJC from the umbilical cord in the context of a reconstructed skin substitute in combination with skin keratinocytes and fibroblasts. We compared the ability of the epithelial cells from both sources to generate a stratified, differentiated skin-like epithelium upon exposure to air when cultured on the two stromal cell types. Conversely, the ability of the WJC to behave as dermal fibroblasts, producing extracellular matrix and supporting the formation of a differentiated epithelium for both types of epithelial cells, was also investigated. Of the four types of constructs produced, the combination of WJC and keratinocytes was the most similar to skin engineered from dermal fibroblasts and keratinocytes. When cultured on dermal fibroblasts, the cord epithelial cells were able to differentiate in vitro into a stratified multilayered epithelium expressing molecules characteristic of keratinocyte differentiation after exposure to air, and maintaining the expression of keratins K18 and K19, typical of the umbilical cord epithelium. WJC were able to support the growth and differentiation of keratinocytes, especially at the early stages of air-liquid culture. In contrast, cord epithelial cells cultured on WJC did not form a differentiated epidermis when exposed to air. These results support the premise that the tissue from which cells originate can largely affect the properties and homoeostasis of reconstructed substitutes featuring both epithelial and stromal compartments.
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Affiliation(s)
- Cindy J Hayward
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - Julie Fradette
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - Pascal Morissette Martin
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - Rina Guignard
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada.
| | - Lucie Germain
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
| | - François A Auger
- Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Aile-R, Hôpital de l'Enfant-Jésus, Centre de recherche du CHU de Québec, 1401, 18e Rue, Québec, QC, Canada G1J 1Z4; Axe Médecine Régénératrice-Centre de recherche FRQS du CHU de Québec, Québec, QC, Canada; Département de Chirurgie, Faculté de Médecine, Université Laval, Québec, QC, Canada.
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A novel coating of type IV collagen and hyaluronic acid on stent material-titanium for promoting smooth muscle cell contractile phenotype. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 38:235-43. [PMID: 24656374 DOI: 10.1016/j.msec.2014.02.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 01/13/2014] [Accepted: 02/04/2014] [Indexed: 12/22/2022]
Abstract
The method of stent implantation is currently considered an effective means of treating atherosclerosis. However, implanting of cardiovascular stent often leads to intimal breakage and hyperplasia. The phenomenon that vascular smooth muscle cells (SMCs) transform from contractile to synthetic phenotype becomes a serious obstacle to intimal recovery. To improve how SMCs transform from a synthetic to contractile phenotype, a technique of coimmobilization was used to form type IV collagen (CoIV) and hyaluronic acid (HA) coating on the widely used stent material, titanium (Ti). In this work, several bio-functional coatings made of CoIV/HA mixtures in different ratios were fabricated on the Ti surface. The quantitative characterization of CoIV showed that introducing HA could enhance the amount of the immobilized CoIV on the alkali activated Ti (TiOH) surface. The immunofluorescence staining results of myosin heavy chain (MHC) and DAPI showed that the coating of CoIV/HA in ratios of 200 μg/ml (M200) and 500 μg/ml (M500) also could promote SMCs expressing more contractile phenotype compared with TiOH/CoIV control samples, while the AO/PI staining results indicated that SMCs on the M200 and M500 samples showed less apoptosis ratio. Thus, we hope that this study can provide more helpful exploration and application for promoting the SMC contractile phenotype on the cardiovascular stents.
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9
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Mol A, Smits AIPM, Bouten CVC, Baaijens FPT. Tissue engineering of heart valves: advances and current challenges. Expert Rev Med Devices 2014; 6:259-75. [DOI: 10.1586/erd.09.12] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Egbuniwe O, Grant AD, Renton T, Di Silvio L. Phenotype-independent effects of retroviral transduction in human dental pulp stem cells. Macromol Biosci 2013; 13:851-9. [PMID: 23765615 DOI: 10.1002/mabi.201300020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 04/05/2013] [Indexed: 01/03/2023]
Abstract
An immortalized human dental pulp stem cell (DPSC) line of an odontoblastic phenotype is established to circumvent the normal programmed senescence and to maintain the cell line's usefulness as a tool for further study of cellular activity. DPSCs are isolated from human dental pulp tissues and transfected using hTERT. The influence of this process on the DPSC phenotype and the mRNA expression of oncogenes involved in cellular senescence is investigated. The results reveal an absence of altered DPSC morphology and phenotype following the exogenous introduction of the hTERT gene, which is coupled with a significant reduction in p16 mRNA expression. This provides insight into how to circumvent in vitro dental pulp stem cell death following the exogenous introduction of hTERT.
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Affiliation(s)
- Obi Egbuniwe
- Biomaterials, Tissue Engineering and Imaging, King's College London, Guy's Hospital, London, England.
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11
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Çelebi B, Cloutier M, Rabelo RB, Balloni R, Mantovani D, Bandiera A. Human elastin-based recombinant biopolymers improve mesenchymal stem cell differentiation. Macromol Biosci 2012; 12:1546-54. [PMID: 23042756 DOI: 10.1002/mabi.201200170] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/25/2012] [Indexed: 12/26/2022]
Abstract
Elastin-based polypeptides are a class of smart biopolymers representing an important model in the design of biomaterials. The combination of biomimetic materials with cells that have great plasticity provides a promising strategy for the realization of highly engineered cell-based constructs for regenerative medicine and tissue repair applications. Two recombinant biopolymers inspired by human elastin are assessed as coating agents to prepare biomimetic surfaces for cell culture. These substrates are assayed for hBM MSC culture. The coated surfaces are also characterized with AFM to evaluate the topographical features of the deposited biopolymers. The results suggest that the elastin-derived biomimetic surfaces play a stimulatory role on osteogenic differentiation of MSCs.
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Affiliation(s)
- Betül Çelebi
- Laboratory for Biomaterials and Bioengineering, Laval University, Quebec City, G1V 0A6, PQ, Canada
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Sivaraman B, Bashur CA, Ramamurthi A. Advances in biomimetic regeneration of elastic matrix structures. Drug Deliv Transl Res 2012; 2:323-50. [PMID: 23355960 PMCID: PMC3551595 DOI: 10.1007/s13346-012-0070-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Elastin is a vital component of the extracellular matrix, providing soft connective tissues with the property of elastic recoil following deformation and regulating the cellular response via biomechanical transduction to maintain tissue homeostasis. The limited ability of most adult cells to synthesize elastin precursors and assemble them into mature crosslinked structures has hindered the development of functional tissue-engineered constructs that exhibit the structure and biomechanics of normal native elastic tissues in the body. In diseased tissues, the chronic overexpression of proteolytic enzymes can cause significant matrix degradation, to further limit the accumulation and quality (e.g., fiber formation) of newly deposited elastic matrix. This review provides an overview of the role and importance of elastin and elastic matrix in soft tissues, the challenges to elastic matrix generation in vitro and to regenerative elastic matrix repair in vivo, current biomolecular strategies to enhance elastin deposition and matrix assembly, and the need to concurrently inhibit proteolytic matrix disruption for improving the quantity and quality of elastogenesis. The review further presents biomaterial-based options using scaffolds and nanocarriers for spatio-temporal control over the presentation and release of these biomolecules, to enable biomimetic assembly of clinically relevant native elastic matrix-like superstructures. Finally, this review provides an overview of recent advances and prospects for the application of these strategies to regenerating tissue-type specific elastic matrix structures and superstructures.
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Affiliation(s)
- Balakrishnan Sivaraman
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
| | - Chris A. Bashur
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
| | - Anand Ramamurthi
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
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Hayward CJ, Fradette J, Galbraith T, Rémy M, Guignard R, Gauvin R, Germain L, Auger FA. Harvesting the potential of the human umbilical cord: isolation and characterisation of four cell types for tissue engineering applications. Cells Tissues Organs 2012; 197:37-54. [PMID: 22965075 DOI: 10.1159/000341254] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2012] [Indexed: 12/27/2022] Open
Abstract
The human umbilical cord (UC) has attracted interest as a source of cells for many research applications. UC solid tissues contain four cell types: epithelial, stromal, smooth muscle and endothelial cells. We have developed a unique protocol for the sequential extraction of all four cell types from a single UC, allowing tissue reconstruction using multiple cell types from the same source. By combining perfusion, immersion and explant techniques, all four cell types have been successfully expanded in monolayer cultures. We have also characterised epithelial and Wharton's jelly cells (WJC) by immunolabelling of specific proteins. Epithelial cell yields averaged at 2.3 × 10(5) cells per centimetre UC, and the cells expressed an unusual combination of keratins typical of simple, mucous and stratified epithelia. Stromal cells in the Wharton's jelly expressed desmin, α-smooth muscle actin, elastin, keratins (K12, K16, K18 and K19), vimentin and collagens. Expression patterns in cultured cells resembled those found in situ except for basement membrane components and type III collagen. These stromal cells featured a sustained proliferation rate up to passage 12 after thawing. The mesenchymal stem cell (MSC) character of the WJC was confirmed by their expression of typical MSC surface markers and by adipogenic and osteogenic differentiation assays. To emphasise and demonstrate their potential for regenerative medicine, UC cell types were successfully used to produce human tissue-engineered constructs. Both bilayered stromal/epithelial and vascular substitutes were produced, establishing the versatility and importance of these cells for research and therapeutic applications.
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Affiliation(s)
- Cindy J Hayward
- Centre LOEX de l'Université Laval, Université Laval, Québec, Qué., Canada
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Del Gaudio C, Fioravanzo L, Folin M, Marchi F, Ercolani E, Bianco A. Electrospun tubular scaffolds: on the effectiveness of blending poly(ε-caprolactone) with poly(3-hydroxybutyrate-co-3-hydroxyvalerate). J Biomed Mater Res B Appl Biomater 2012; 100:1883-98. [PMID: 22888010 DOI: 10.1002/jbm.b.32756] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 04/27/2012] [Accepted: 06/03/2012] [Indexed: 11/08/2022]
Abstract
Tissue engineering can effectively contribute to the development of novel vascular prostheses aimed to overcome the well-known drawbacks of small-diameter grafts. To date, poly(ε-caprolactone) (PCL), a bioresorbable synthetic poly(α-hydroxyester), is considered one of the most promising materials for vascular tissue engineering. In this work, the potential advantage of intimate blending soft PCL and hard poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), a polymer of microbial origin, has been evaluated. Nonwoven mats and small-diameter tubular scaffolds of PCL, PHBV, and PCL/PHBV were fabricated by means of electrospinning technique. Mechanical properties and suture retention strength were investigated according to the international standard for cardiovascular implants. Biological tests demonstrated that both PCL-based scaffolds supported survival and growth of rat cerebral endothelial cells in a short time. The fiber alignment of the electrospun tubular scaffolds contributed to a more rapid and homogeneous cell colonization of the luminal surface.
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Affiliation(s)
- Costantino Del Gaudio
- Department of Industrial Engineering, University of Rome Tor Vergata, INSTM Research Unit Roma Tor Vergata, Rome, Italy.
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15
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Basu J, Genheimer CW, Rivera EA, Payne R, Mihalko K, Guthrie K, Bruce AT, Robbins N, McCoy D, Sangha N, Ilagan R, Knight T, Spencer T, Wagner BJ, Jayo MJ, Jain D, Ludlow JW, Halberstadt C. Functional Evaluation of Primary Renal Cell/Biomaterial Neo-Kidney Augment Prototypes for Renal Tissue Engineering. Cell Transplant 2011; 20:1771-90. [DOI: 10.3727/096368911x566172] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Development of a tissue-engineered neo-kidney augment (NKA) requires evaluation of defined, therapeutically relevant cell and cell/biomaterial composites (NKA constructs) for regenerative potential in mammalian kidney. Previous work identified primary renal cell populations that extended survival and improved renal function in a rodent model of chronic kidney disease (CKD). This study extends that work toward the goal of developing NKA by (i) screening in vivo inflammatory and fibrotic responses to acellular biomaterials delivered to healthy rodent renal parenchyma, (ii) evaluating the functionality of renal cell/biomaterial combinations in vitro, (iii) generating NKA constructs by combining therapeutically relevant cell populations with biocompatible biomaterial, and (iv) evaluating in vivo neokidney tissue development in response to NKA constructs delivered to healthy rodent renal parenchyma. Gelatin and hyaluronic acid (HA)-based hydrogels elicited the least inflammatory and fibrotic responses in renal parenchyma relative to polycaprolactone (PCL) and poly(lactic- co-glycolic acid) (PLGA) beads or particles and were associated with neovascularization and cellular infiltration by 4 weeks postimplantation. Renal cell populations seeded onto gelatin or HA-based hydrogels were viable and maintained a tubular epithelial functional phenotype during an in vitro maturation of 3 days as measured by transcriptomic, proteomic, secretomic, and confocal immunofluorescence assays. In vivo delivery of cell-seeded NKA constructs (bioactive renal cells + gelatin hydrogels) to healthy rodent renal parenchyma elicited neokidney tissue formation at 1 week postimplantation. To investigate a potential mechanism by which NKA constructs could impact a disease state, the effect of conditioned media on TGF-β signaling pathways related to tubulo-interstitial fibrosis associated with CKD progression was evaluated. Conditioned medium was observed to attenuate TGF-β-induced epithelial–mesenchymal transition (EMT) in vitro in a human proximal tubular cell line (HK2).
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Affiliation(s)
| | | | | | | | - Kim Mihalko
- Carolinas Medical Center, Charlotte, NC, USA
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16
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Hayes AJ, Lord MS, Smith SM, Smith MM, Whitelock JM, Weiss AS, Melrose J. Colocalization in vivo and association in vitro of perlecan and elastin. Histochem Cell Biol 2011; 136:437-54. [PMID: 21874555 DOI: 10.1007/s00418-011-0854-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2011] [Indexed: 12/30/2022]
Abstract
We have colocalized elastin and fibrillin-1 with perlecan in extracellular matrix of tensional and weight-bearing connective tissues. Elastin and fibrillin-1 were identified as prominent components of paraspinal blood vessels, and posterior longitudinal ligament in the human fetal spine and outer annulus fibrosus of the fetal intervertebral disc. We also colocalized perlecan with a synovial elastic basal lamina, where the attached synovial cells were observed to produce perlecan. Elastin, fibrillin-1 and perlecan were co-localized in the intima and media of small blood vessels in the synovium and in human fetal paraspinal blood vessels. Elastic fibers were observed at the insertion point of the anterior cruciate ligament to bone in the ovine stifle joint where they colocalized with perlecan. Elastin has not previously been reported to be spatially associated with perlecan in these tissues. Interactions between the tropoelastin and perlecan heparan sulfate chains were demonstrated using quartz crystal microbalance with dissipation solid phase binding studies. Electrostatic interactions through the heparan sulfate chains of perlecan and core protein mediated the interactions with tropoelastin, and were both important in the coacervation of tropoelastin and deposition of elastin onto perlecan immobilized on the chip surface. This may help us to understand the interactions which are expected to occur in vivo between the tropoelastin and perlecan to facilitate the deposition of elastin and formation of elastic microfibrils in situ and would be consistent with the observed distributions of these components in a number of connective tissues.
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Affiliation(s)
- Anthony J Hayes
- BioImaging Unit, Cardiff School of Biosciences, University of Cardiff, Cardiff, UK
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17
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Smardencas A, Parkington HC. Seeding of endothelial cells on the luminal surface of a sheet model of cold-stored (at 4°C) sheep carotid arteries. Cell Transplant 2011; 21:285-97. [PMID: 21669048 DOI: 10.3727/096368911x580608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Cold-stored arteries are biomaterials that potentially represent an abundant "off-the-shelf" source of vascular grafts for use in vascular surgery. One of the keys to reestablishing the antithrombogenic endothelial cell (EC) lining of cold-stored arterial grafts is to maximize the number of ECs that attach following seeding. In this study, the cold-stored sheep carotid artery is used as a substrate to determine the conditions that maximize EC adherence following seeding. The effect of serum concentration, duration of seeding incubation, seeding density, and period of cold storage on attachment of ECs following seeding of 4-week cold-stored sheep carotid arteries (n = 5 arteries), 8-week cold-stored sheep carotid arteries (n = 5 arteries), and 12-week cold-stored sheep carotid arteries (n = 5 arteries) was examined. Three experiments (serum concentration, time of incubation, and seeding density) were conducted to determine the conditions that maximized the number of cultured sheep carotid artery ECs that attached to cold-stored sheep carotid artery following seeding. A flat sheet model was used. Serum concentration (0%, 10%, 20%, and 30%) in the seeding suspension did not have a significant effect on overall EC adherence on 4-, 8-, and 12-week cold-stored arteries. Time of seeding incubation (30, 60, and 90 min) did not have a significant effect on overall EC adherence on 4-, 8-, and 12-week cold-stored arteries. Seeding density (500,000 cells/ml, 1,000,000 cells/ml, and 2,000,000 cells/ml) had a significant effect (p = 0.036) on overall EC adherence on 4-, 8-, and 12-week cold-stored arteries. The period of cold storage (4, 8, and 12 weeks) of the artery had a significant effect (p = 0.002, p < 0.0001, p < 0.0001 in serum, time, and seeding density experiments, respectively) on overall EC adherence following seeding. Pairwise comparisons of EC adherence revealed the following. In the serum experiment, EC adherence on 4-week cold-stored arteries was significantly greater than on 8-week cold-stored arteries (p = 0.003) and 12-week cold-stored arteries (p = 0.002). This effect was due largely to the significant difference between EC adherence on 4-week and 8-week cold-stored arteries (p = 0.0002) and between EC adherence on 4-week and 12-week cold-stored arteries (p = 0.0091) at 20% serum. In the time experiment, EC adherence on 4-week cold-stored arteries was significantly greater than on 12-week cold-stored arteries (p < 0.0001). In the seeding density experiment, EC adherence on 4-week cold-stored arteries was significantly greater than on 8-week cold-stored arteries (p < 0.0001) and 12-week cold-stored arteries (p < 0.0001). In the same experiment, EC adherence following seeding at a density of 1,000,000 cells/ml and 2,000,000 cells/ml was significantly greater (p = 0.03 and p = 0.02, respectively) than EC adherence following seeding at a density of 500,000 cells/ml. Thus, it was determined that 4-week cold-stored arteries were superior to 8- and 12-week cold-stored arteries in terms of the number of ECs that adhered. It was also determined that a seeding density of 1,000,000 or 2,000,000 cells/ml was superior to a seeding density of 500,000 cells/ml in terms of producing maximal EC attachment. The ideal conditions, from those examined, for maximizing EC attachment to cold-stored arteries were 4 weeks of cold storage, a serum concentration of 20%, a seeding density of 2,000,000 cells/ml, and a duration of incubation of 30-90 min.
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Affiliation(s)
- Arthur Smardencas
- Department of Forensic Medicine, Monash University, Clayton, Victoria, Australia.
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18
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Heine J, Schmiedl A, Cebotari S, Mertsching H, Karck M, Haverich A, Kallenbach K. Preclinical Assessment of a Tissue-Engineered Vasomotive Human Small-Calibered Vessel Based on a Decellularized Xenogenic Matrix: Histological and Functional Characterization. Tissue Eng Part A 2011; 17:1253-61. [DOI: 10.1089/ten.tea.2010.0375] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Jörg Heine
- Department of Cardiovascular and Thoracic Surgery, Hannover Medical School, Hannover, Germany
- Leibniz Research Laboratory for Biotechnology and Artificial Organs (LEBAO), Hannover, Germany
- Oral- and Craniomaxillofacial and Facial Plastic Surgery, University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Andreas Schmiedl
- Department of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
| | - Serghei Cebotari
- Department of Cardiovascular and Thoracic Surgery, Hannover Medical School, Hannover, Germany
- Leibniz Research Laboratory for Biotechnology and Artificial Organs (LEBAO), Hannover, Germany
| | - Heike Mertsching
- Department of Cardiovascular and Thoracic Surgery, Hannover Medical School, Hannover, Germany
- Leibniz Research Laboratory for Biotechnology and Artificial Organs (LEBAO), Hannover, Germany
- Fraunhofer IGB Stuttgart, Stuttgart, Germany
| | - Matthias Karck
- Department of Cardiovascular and Thoracic Surgery, Hannover Medical School, Hannover, Germany
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Axel Haverich
- Department of Cardiovascular and Thoracic Surgery, Hannover Medical School, Hannover, Germany
- Leibniz Research Laboratory for Biotechnology and Artificial Organs (LEBAO), Hannover, Germany
| | - Klaus Kallenbach
- Department of Cardiovascular and Thoracic Surgery, Hannover Medical School, Hannover, Germany
- Leibniz Research Laboratory for Biotechnology and Artificial Organs (LEBAO), Hannover, Germany
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
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19
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Li J, Stuhlmann H. In vitro imaging of angiogenesis using embryonic stem cell-derived endothelial cells. Stem Cells Dev 2011; 21:331-42. [PMID: 21385073 DOI: 10.1089/scd.2010.0587] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Angiogenesis is an important event during developmental processes, and it plays a key role in neovascularization. The development of an in vitro model that can be used for live imaging of vessel growth will facilitate the study of molecular and cellular mechanisms for the growth of blood vessels. Embryonic stem cells (ESCs) are considered to be a novel renewable source for the derivation of genetically manipulable endothelial cells (ECs). To derive green fluorescence protein (GFP)-expressing ECs, we used a transgenic ESC line in which a GFP reporter was driven by the endothelial-specific promoter fetal liver kinase 1. ESC-ECs were isolated from 11-day embryoid bodies by fluorescence-activated cell sorting. Embedding the aggregated ESC-ECs in a 3-dimensional collagen gel matrix resulted in ESC-EC migration out of the aggregates and coalescence into a capillary network. Time-lapse microscopy revealed EC migration, proliferation, lumen formation, and anastomosis to other capillary vessels during this process, which were reminiscent of angiogenic processes. Vascular endothelial growth factor plays major roles in the induction of ESC-EC angiogenesis in vitro. Blockage of the β1 integrin subunit severely impaired ESC-EC survival and migration. We demonstrate that our in vitro ESC-EC angiogenesis model represents a high-resolution dynamic video-image system for observing the cellular events underlying angiogenic cascades. We also consider this model as an image screening tool for the identification of pro-angiogenic and anti-angiogenic molecules.
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Affiliation(s)
- Jia Li
- Department of Cell and Developmental Biology, Weill Medical College of Cornell University, New York, New York, USA.
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20
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Chen J, Chen C, Chen Z, Chen J, Li Q, Huang N. Collagen/heparin coating on titanium surface improves the biocompatibility of titanium applied as a blood-contacting biomaterial. J Biomed Mater Res A 2011; 95:341-9. [PMID: 20623672 DOI: 10.1002/jbm.a.32847] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Thrombosis and restenosis are the main causes leading to failure of cardiovascular and other blood-contacting biomedical devices. It is recognized that rapid re-endothelialization is a promising method for preventing these complications. This article deals with improving the endothelial progenitor cell (EPC) compatibility and hemocompatibility of titanium by coating an extracellular matrix-like film with heparin(hep) and collagen(col) by a layer-by-layer (LBL) self-assembly technique. In the work described here, LBL-produced col/hep coating growth is initialized by deposition of a layer of poly-L-lysine on a titanium surface, which is negatively charged after treatment with NaOH, followed by formation of a multilayer film formed by alternating deposition of negatively charged heparin and positively charged collagen using electrostatic interaction. The X-ray photoelectron spectroscopy results and fluorescence staining of collagen show that collagen is predominant on the surface and that collagen interpenetrates the heparin layer. In vitro EPC attachment and proliferation increase greatly on the col/hep coating. Immunofluorescent staining of cytoskeleton actin reveals that cells on the col/hep coating form a compact confluent cell layer after culture for 3 days. After culture for 5 days, cell viability on the col/hep increases persistently and on titanium the cell viability begins to decrease, showing that the coating possesses the ability to maintain cell viability. Platelet adhesion under dynamic conditions in vitro implies that the hemocompatibility of the col/hep coating is superior to that of titanium. The col/hep coating improves the biocompatibility of titanium and has good potential for application in blood-contacting biomaterials.
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Affiliation(s)
- Jialong Chen
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
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21
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Rossi A, Gabbrielli E, Villano M, Messina M, Ferrara F, Weber E. Human microvascular lymphatic and blood endothelial cells produce fibrillin: deposition patterns and quantitative analysis. J Anat 2010; 217:705-14. [PMID: 21039476 DOI: 10.1111/j.1469-7580.2010.01306.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Fibrillin microfibrils constitute a scaffold for elastin deposition in the wall of arteries and form the anchoring filaments that connect the lymphatic endothelium to surrounding elastic fibers. We previously reported that fibrillin is deposited in a honeycomb pattern in bovine arterial endothelial cells, which also deposit microfibril-associated glycoprotein (MAGP)-1, whereas thoracic duct endothelial cells form an irregular web. The present immunohistochemical study was designed to verify whether lymphatic and blood human dermal microvascular endothelial cells (HDMECs) isolated from human foreskin by the sequential use of a pan-endothelial marker, CD31, and the lymphatic specific marker, D2-40, deposit fibrillin and MAGP-1. In both cell types, fibrillin and MAGP-1 co-localized and were deposited with different patterns of increasing complexity co-existing in the same culture. Fibrillin microfibrils formed a wide-mesh honeycomb leaving fibrillin-free spaces that were gradually filled. This modality of fibrillin deposition, similar to that of bovine large artery endothelial cells, was basically the same in blood and lymphatic HDMECs. In some lymphatic HDMECs, fibrillin was initially deposited as uniformly scattered short fibrillin strands probably as a result of anchoring filaments carried over from the vessels of origin. Our findings show that blood and lymphatic endothelial cells participate in fibrillin deposition in human skin.
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Affiliation(s)
- Antonella Rossi
- Molecular Medicine Section, Department of Neuroscience, University of Siena, Siena, Italy
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22
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Villalona GA, Udelsman B, Duncan DR, McGillicuddy E, Sawh-Martinez RF, Hibino N, Painter C, Mirensky T, Erickson B, Shinoka T, Breuer CK. Cell-seeding techniques in vascular tissue engineering. TISSUE ENGINEERING PART B-REVIEWS 2010; 16:341-50. [PMID: 20085439 DOI: 10.1089/ten.teb.2009.0527] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Previous studies have demonstrated the benefits of cell seeding in the construction of tissue-engineered vascular grafts (TEVG). However, seeding methods are diverse and no method is clearly superior in either promoting seeding efficiency or improving long-term graft function. As we head into an era during which a variety of different TEVG are under investigation in clinical trials around the world, it is important to consider the regulatory issues surrounding the translation of these technologies. In this review, we summarize important advances in the field of vascular tissue engineering, with particular attention on cell-seeding techniques for TEVG development and special emphasis placed on regulatory issues concerning the clinical translation of these various methods.
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Affiliation(s)
- Gustavo A Villalona
- Department of Surgery, Yale University School of Medicine, Yale New Haven Hospital, New Haven, Connecticut 06520-8062, USA
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23
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Chong MSK, Teoh SH, Teo EY, Zhang ZY, Lee CN, Koh S, Choolani M, Chan J. Beyond Cell Capture: Antibody Conjugation Improves Hemocompatibility for Vascular Tissue Engineering Applications. Tissue Eng Part A 2010; 16:2485-95. [DOI: 10.1089/ten.tea.2009.0680] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Mark Seow Khoon Chong
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Mechanical Engineering, Centre for Biomedical Materials Applications and Technology (BIOMAT), National University of Singapore, Singapore, Singapore
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Swee-Hin Teoh
- Department of Mechanical Engineering, Centre for Biomedical Materials Applications and Technology (BIOMAT), National University of Singapore, Singapore, Singapore
| | - Erin Yiling Teo
- Department of Mechanical Engineering, Centre for Biomedical Materials Applications and Technology (BIOMAT), National University of Singapore, Singapore, Singapore
| | - Zhi-Yong Zhang
- Department of Mechanical Engineering, Centre for Biomedical Materials Applications and Technology (BIOMAT), National University of Singapore, Singapore, Singapore
| | - Chueng Neng Lee
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Stephen Koh
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Mahesh Choolani
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jerry Chan
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Reproductive Medicine, KK Women's and Children's Hospital, Singapore, Singapore
- Cancer and Stem Cell Biology Program, Duke-NUS Graduate Medical School, Singapore, Singapore
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24
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Bax DV, McKenzie DR, Weiss AS, Bilek MM. Linker-free covalent attachment of the extracellular matrix protein tropoelastin to a polymer surface for directed cell spreading. Acta Biomater 2009; 5:3371-81. [PMID: 19463976 DOI: 10.1016/j.actbio.2009.05.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 04/02/2009] [Accepted: 05/12/2009] [Indexed: 12/28/2022]
Abstract
Polymers are used for the fabrication of many prosthetic implants. It is desirable for these polymers to promote biological function by promoting the adhesion, differentiation and viability of cells. Here we have used plasma immersion ion implantation (PIII) treatment of polystyrene to modify the polymer surface, and so modulate the binding of the extracellular matrix protein tropoelastin. PIII treated, but not untreated polystyrene, bound tropoelastin in a sodium dodecyl sulfate (SDS)-resistant manner, consistent with previous enzyme-binding data that demonstrated the capability of these surfaces to covalently attach proteins without employing chemical linking molecules. Furthermore sulfo-NHS acetate (SNA) blocking of tropoelastin lysine side chains eliminated the SDS-resistant binding of tropoelastin to PIII-treated polystyrene. This implies tropoelastin is covalently attached to the PIII-treated surface via its lysine side chains. Cell spreading was only observed on tropoelastin coated, PIII-treated polystyrene surfaces, indicating that tropoelastin was more biologically active on the PIII-treated surface compared to the untreated surface. A contact mask was used to pattern the PIII treatment. Following tropoelastin attachment, cells spread preferentially on the PIII-treated sections of the polystyrene surface. This demonstrates that PIII treatment of polystyrene improves the polymer's tropoelastin binding properties, with advantages for tissue engineering and prosthetic design.
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25
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Grenier S, Sandig M, Mequanint K. Smooth muscle alpha-actin and calponin expression and extracellular matrix production of human coronary artery smooth muscle cells in 3D scaffolds. Tissue Eng Part A 2009; 15:3001-11. [PMID: 19323608 DOI: 10.1089/ten.tea.2009.0057] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
For a tissue-engineered coronary artery substitute to be a viable clinical option in the treatment of vascular diseases, it is necessary to use tissue-specific human cells. Coronary artery smooth muscle cells are the main resident cells in the tunica media of arteries. In this work, we examined the behavior and differentiation state of human coronary artery smooth muscle cells (HCASMCs) when cultured on 3D polyurethane scaffolds to fabricate hybrid vascular tissues. As the mechanical strength of the scaffold is an important element in engineered hybrid vascular substitutes, porous 3D polyurethane scaffolds fabricated using paraffin spheres and ammonium chloride particles were tested for their mechanical properties both in tension and in compression. The use of ammonium chloride particles as porogen generated scaffolds with superior mechanical properties, which are suitable for vascular tissue engineering. When seeded on uncoated, fibronectin-coated, and Matrigel-coated scaffolds, HCASMCs were well spread and started producing collagen as judged by histochemical analysis but appeared to lack elastin production. Fibronectin coating appeared to promote the infiltration of HCASMCs into the scaffold better than Matrigel coating but did not appear to affect the expression of collagen and elastin. Western blot analyses after successful cell recovery from the scaffolds indicated that HCASMCs, after culturing for 4 and 7 days, expressed similar amounts of smooth muscle alpha-actin and calponin regardless of extracellular matrix coating. Taken together, our data showed that the behavior and differentiation phenotype of HCASMCs can be analyzed after culture in 3D polyurethane scaffolds to establish appropriate conditions that will favor the fabrication of hybrid-engineered vascular substitutes.
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Affiliation(s)
- Stephanie Grenier
- The Graduate Program of Biomedical Engineering, The University of Western Ontario, London, Ontario, Canada
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26
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Chan-Park MB, Shen JY, Cao Y, Xiong Y, Liu Y, Rayatpisheh S, Kang GCW, Greisler HP. Biomimetic control of vascular smooth muscle cell morphology and phenotype for functional tissue-engineered small-diameter blood vessels. J Biomed Mater Res A 2009; 88:1104-21. [PMID: 19097157 DOI: 10.1002/jbm.a.32318] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Small-diameter blood vessel substitutes are urgently needed for patients requiring replacements of their coronary and below-the-knee vessels and for better arteriovenous dialysis shunts. Circulatory diseases, especially those arising from atherosclerosis, are the predominant cause of mortality and morbidity in the developed world. Current therapies include the use of autologous vessels or synthetic materials as vessel replacements. The limited availability of healthy vessels for use as bypass grafts and the failure of purely synthetic materials in small-diameter sites necessitate the development of a biological substitute. Tissue engineering is such an approach and has achieved promising results, but reconstruction of a functional vascular tunica media, with circumferentially oriented contractile smooth muscle cells (SMCs) and extracellular matrix, appropriate mechanical properties, and vasoactivity has yet to be demonstrated. This review focuses on strategies to effect the switch of SMC phenotype from synthetic to contractile, which is regarded as crucial for the engineering of a functional vascular media. The synthetic SMC phenotype is desired initially for cell proliferation and tissue remodeling, but the contractile phenotype is then necessary for sufficient vasoactivity and inhibition of neointima formation. The factors governing the switch to a more contractile phenotype with in vitro culture are reviewed.
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Affiliation(s)
- Mary B Chan-Park
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 50 Nanyang Ave, Singapore 639798, Singapore.
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27
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Chong MS, Chan J, Choolani M, Lee CN, Teoh SH. Development of cell-selective films for layered co-culturing of vascular progenitor cells. Biomaterials 2009; 30:2241-51. [DOI: 10.1016/j.biomaterials.2008.12.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Accepted: 12/26/2008] [Indexed: 12/20/2022]
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28
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Veeravagu A, Bababeygy SR, Kalani MYS, Hou LC, Tse V. The Cancer Stem Cell–Vascular Niche Complex in Brain Tumor Formation. Stem Cells Dev 2008; 17:859-67. [DOI: 10.1089/scd.2008.0047] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Anand Veeravagu
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California
| | - Simon R. Bababeygy
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, California
| | - M. Yashar S. Kalani
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California
- Department of Developmental Biology, Stanford University School of Medicine, Stanford, California
| | - Lewis C. Hou
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California
| | - Victor Tse
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California
- Department of Neurosurgery, Santa Clara Valley Medical Center, San Jose, California
- Providence Regional Medical Center, Everett and Seattle Neuroscience Institute at Swedish, Washington
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29
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Ma PX. Biomimetic materials for tissue engineering. Adv Drug Deliv Rev 2008; 60:184-98. [PMID: 18045729 DOI: 10.1016/j.addr.2007.08.041] [Citation(s) in RCA: 796] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2007] [Accepted: 08/21/2007] [Indexed: 12/16/2022]
Abstract
Tissue engineering and regenerative medicine is an exciting research area that aims at regenerative alternatives to harvested tissues for transplantation. Biomaterials play a pivotal role as scaffolds to provide three-dimensional templates and synthetic extracellular matrix environments for tissue regeneration. It is often beneficial for the scaffolds to mimic certain advantageous characteristics of the natural extracellular matrix, or developmental or wound healing programs. This article reviews current biomimetic materials approaches in tissue engineering. These include synthesis to achieve certain compositions or properties similar to those of the extracellular matrix, novel processing technologies to achieve structural features mimicking the extracellular matrix on various levels, approaches to emulate cell-extracellular matrix interactions, and biologic delivery strategies to recapitulate a signaling cascade or developmental/wound healing program. The article also provides examples of enhanced cellular/tissue functions and regenerative outcomes, demonstrating the excitement and significance of the biomimetic materials for tissue engineering and regeneration.
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Ball SG, Shuttleworth CA, Kielty CM. Mesenchymal stem cells and neovascularization: role of platelet-derived growth factor receptors. J Cell Mol Med 2008; 11:1012-30. [PMID: 17979880 PMCID: PMC4401270 DOI: 10.1111/j.1582-4934.2007.00120.x] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
There is now accumulating evidence that bone marrow-derived mesenchymal stem cells (MSCs) make an important contribution to postnatal vasculogenesis, especially during tissue ischaemia and tumour vascularization. Identifying mechanisms which regulate the role of MSCs in vasculogenesis is a key therapeutic objective, since while increased neovascularization can be advantageous during tissue ischaemia, it is deleterious during tumourigenesis. The potent angiogenic stimulant vascular endothelial growth factor (VEGF) is known to regulate MSC mobilization and recruitment to sites of neovascularization, as well as directing the differentiation of MSCs to a vascular cell fate. Despite the fact that MSCs did not express VEGF receptors, we have recently identified that VEGF-A can stimulate platelet-derived growth factor (PDGF) receptors, which regulates MSC migration and proliferation. This review focuses on the role of PDGF receptors in regulating the vascular cell fate of MSCs, with emphasis on the function of the novel VEGF-A/PDGF receptor signalling mechanism.
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Affiliation(s)
- Stephen G Ball
- UK Centre for Tissue Engineering, Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, The University of Manchester, Manchester, UK
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Haldar D. Two component hydrogel with γ-amino butyric acid as potential receptor and neurotransmitter delivery system. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.10.074] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Williamson MR, Shuttleworth A, Canfield AE, Black RA, Kielty CM. The role of endothelial cell attachment to elastic fibre molecules in the enhancement of monolayer formation and retention, and the inhibition of smooth muscle cell recruitment. Biomaterials 2007; 28:5307-18. [PMID: 17850863 DOI: 10.1016/j.biomaterials.2007.08.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2007] [Accepted: 08/15/2007] [Indexed: 01/23/2023]
Abstract
The endothelium is an essential modulator of vascular tone and thrombogenicity and a critical barrier between the vessel wall and blood components. In tissue-engineered small-diameter vascular constructs, endothelial cell detachment in flow can lead to thrombosis and graft failure. The subendothelial extracellular matrix provides stable endothelial cell anchorage through interactions with cell surface receptors, and influences the proliferation, migration, and survival of both endothelial cells and smooth muscle cells. We have tested the hypothesis that these desired physiological characteristics can be conferred by surface coatings of natural vascular matrix components, focusing on the elastic fiber molecules, fibrillin-1, fibulin-5 and tropoelastin. On fibrillin-1 or fibulin-5-coated surfaces, endothelial cells exhibited strong integrin-mediated attachment in static conditions (82% and 76% attachment, respectively) and flow conditions (67% and 78% cell retention on fibrillin-1 or fibulin-5, respectively, at 25 dynes/cm2), confluent monolayer formation, and stable functional characteristics. Adhesion to these two molecules also strongly inhibited smooth muscle cell migration to the endothelial monolayer. In contrast, on elastin, endothelial cells attached poorly, did not spread, and had markedly impaired functional properties. Thus, fibrillin-1 and fibulin-5, but not elastin, can be exploited to enhance endothelial stability, and to inhibit SMC migration within vascular graft scaffolds. These findings have important implications for the design of vascular graft scaffolds, the clinical performance of which may be enhanced by exploiting natural cell-matrix biology to regulate cell attachment and function.
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Affiliation(s)
- Matthew R Williamson
- Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Manchester M13 9PT, UK
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