1
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Valadares DF, Soares RRP, Di Giacomo G, Rocha T, Reichert CO, Bydlowski SP. von Willebrand factor and factor VIII in a healthy Brazilian population. Association with ABO blood groups. Thromb Res 2020; 188:49-51. [PMID: 32058198 DOI: 10.1016/j.thromres.2020.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/27/2020] [Accepted: 02/03/2020] [Indexed: 11/15/2022]
Affiliation(s)
- Daniela F Valadares
- Lipids, Oxidation, and Cell Biology Group, Laboratory of Immunology (LIM19), Heart Institute (InCor), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, 05403-900 Sao Paulo, SP, Brazil
| | | | - Giovanna Di Giacomo
- Lipids, Oxidation, and Cell Biology Group, Laboratory of Immunology (LIM19), Heart Institute (InCor), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, 05403-900 Sao Paulo, SP, Brazil
| | - Tania Rocha
- Divisão de Hematologia, Hemoterapia e Terapia Celular, Hospital das Clínicas HCFMUSP, São Paulo, SP, Brazil
| | - Cadiele O Reichert
- Lipids, Oxidation, and Cell Biology Group, Laboratory of Immunology (LIM19), Heart Institute (InCor), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, 05403-900 Sao Paulo, SP, Brazil
| | - Sergio P Bydlowski
- Lipids, Oxidation, and Cell Biology Group, Laboratory of Immunology (LIM19), Heart Institute (InCor), Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, 05403-900 Sao Paulo, SP, Brazil.
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2
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Ribeiro-Filho AC, Levy D, Ruiz JLM, Mantovani MDC, Bydlowski SP. Traditional and Advanced Cell Cultures in Hematopoietic Stem Cell Studies. Cells 2019; 8:cells8121628. [PMID: 31842488 PMCID: PMC6953118 DOI: 10.3390/cells8121628] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/02/2019] [Accepted: 12/04/2019] [Indexed: 01/09/2023] Open
Abstract
Hematopoiesis is the main function of bone marrow. Human hematopoietic stem and progenitor cells reside in the bone marrow microenvironment, making it a hotspot for the development of hematopoietic diseases. Numerous alterations that correspond to disease progression have been identified in the bone marrow stem cell niche. Complex interactions between the bone marrow microenvironment and hematopoietic stem cells determine the balance between the proliferation, differentiation and homeostasis of the stem cell compartment. Changes in this tightly regulated network can provoke malignant transformation. However, our understanding of human hematopoiesis and the associated niche biology remains limited due to accessibility to human material and the limits of in vitro culture models. Traditional culture systems for human hematopoietic studies lack microenvironment niches, spatial marrow gradients, and dense cellularity, rendering them incapable of effectively translating marrow physiology ex vivo. This review will discuss the importance of 2D and 3D culture as a physiologically relevant system for understanding normal and abnormal hematopoiesis.
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Affiliation(s)
- Antonio Carlos Ribeiro-Filho
- Organoid Development Team, Center of Innovation and Translational Medicine (CIMTRA), University of São Paulo School of Medicine, Sao Paulo 05360-130, Brazil; (A.C.R.-F.); (M.d.C.M.)
| | - Débora Levy
- Lipids, Oxidation and Cell Biology Team, Laboratory of Immunology (LIM19), Heart Institute (InCor), University of São Paulo School of Medicine, Sao Paulo 05403-900, Brazil;
| | - Jorge Luis Maria Ruiz
- Life and Nature Science Institute, Federal University of Latin American Integration-UNILA, Foz de Iguaçú, PR 858570-901, Brazil;
| | - Marluce da Cunha Mantovani
- Organoid Development Team, Center of Innovation and Translational Medicine (CIMTRA), University of São Paulo School of Medicine, Sao Paulo 05360-130, Brazil; (A.C.R.-F.); (M.d.C.M.)
| | - Sérgio Paulo Bydlowski
- Organoid Development Team, Center of Innovation and Translational Medicine (CIMTRA), University of São Paulo School of Medicine, Sao Paulo 05360-130, Brazil; (A.C.R.-F.); (M.d.C.M.)
- Lipids, Oxidation and Cell Biology Team, Laboratory of Immunology (LIM19), Heart Institute (InCor), University of São Paulo School of Medicine, Sao Paulo 05403-900, Brazil;
- National Institute of Science and Technology in Regenerative Medicine (INCT-Regenera), CNPq, Rio de Janeiro 21941-902, Brazil
- Correspondence:
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3
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Levy D, de Melo TC, Oliveira BA, Paz JL, de Freitas FA, Reichert CO, Rodrigues A, Bydlowski SP. 7-Ketocholesterol and cholestane-triol increase expression of SMO and LXRα signaling pathways in a human breast cancer cell line. Biochem Biophys Rep 2018; 19:100604. [PMID: 31463370 PMCID: PMC6709374 DOI: 10.1016/j.bbrep.2018.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/14/2018] [Accepted: 12/20/2018] [Indexed: 02/07/2023] Open
Abstract
Oxysterols are 27-carbon oxidation products of cholesterol metabolism. Oxysterols possess several biological actions, including the promotion of cell death. Here, we examined the ability of 7-ketocholesterol (7-KC), cholestane-3β-5α-6β-triol (triol), and a mixture of 5α-cholestane-3β,6β-diol and 5α-cholestane-3β,6α-diol (diol) to promote cell death in a human breast cancer cell line (MDA-MB-231). We determined cell viability, after 24-h incubation with oxysterols. These oxysterols promoted apoptosis. At least part of the observed effects promoted by 7-KC and triol arose from an increase in the expression of the sonic hedgehog pathway mediator, smoothened. However, this increased expression was apparently independent of sonic hedgehog expression, which did not change. Moreover, these oxysterols led to increased expression of LXRα, which is involved in cellular cholesterol efflux, and the ATP-binding cassette transporters, ABCA1 and ABCG1. Diols did not affect these pathways. These results suggested that the sonic hedgehog and LXRα pathways might be involved in the apoptotic process promoted by 7-KC and triol.
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Affiliation(s)
- Debora Levy
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Thatiana Correa de Melo
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Beatriz A. Oliveira
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Jessica L. Paz
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Fabio A. de Freitas
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | - Cadiele O. Reichert
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
| | | | - Sergio P. Bydlowski
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil
- Instituto Nacional de Ciencia e Tecnologia em Medicina Regenerativa (INCT-Regenera), CNPq, Brazil
- Correspondence to: Department of Hematology, Faculdade de Medicina, Universidade de Sao Paulo, Av.Dr. Enéas de Carvalho Aguiar,155, 1st floor, room 43, 05403-000 São Paulo, SP, Brazil.
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4
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Oxysterols selectively promote short-term apoptosis in tumor cell lines. Biochem Biophys Res Commun 2018; 505:1043-1049. [DOI: 10.1016/j.bbrc.2018.10.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 10/01/2018] [Indexed: 02/07/2023]
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5
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Favero GM, Paz JL, Otake AH, Maria DA, Caldini EG, de Medeiros RSS, Deus DF, Chammas R, Maranhão RC, Bydlowski SP. Cell internalization of 7-ketocholesterol-containing nanoemulsion through LDL receptor reduces melanoma growth in vitro and in vivo: a preliminary report. Oncotarget 2018; 9:14160-14174. [PMID: 29581835 PMCID: PMC5865661 DOI: 10.18632/oncotarget.24389] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 01/25/2018] [Indexed: 01/01/2023] Open
Abstract
Oxysterols are cholesterol oxygenated derivatives which possess several biological actions. Among oxysterols, 7-ketocholesterol (7KC) is known to induce cell death. Here, we hypothesized that 7KC cytotoxicity could be applied in cancer therapeutics. 7KC was incorporated into a lipid core nanoemulsion. As a cellular model the murine melanoma cell line B16F10 was used. The nanoparticle (7KCLDE) uptake into tumor cells was displaced by increasing amounts of low-density-lipoproteins (LDL) suggesting a LDL-receptor-mediated cell internalization. 7KCLDE was mainly cytostatic, which led to an accumulation of polyploid cells. Nevertheless, a single dose of 7KCLDE killed roughly 10% of melanoma cells. In addition, it was observed dissipation of the transmembrane potential, evidenced with flow cytometry; presence of autophagic vacuoles, visualized and quantified with flow cytometry and acridine orange; and presence of myelin figures, observed with ultrastructural microscopy. 7KCLDE impaired cytokenesis was accompanied by changes in cellular morphology into a fibroblastoid shape which is supported by cytoskeletal rearrangements, as shown by the increased actin polymerization. 7KCLDE was injected into B16 melanoma tumor-bearing mice. 7KCLDE accumulated in the liver and tumor. In melanoma tumor 7KCLDE promoted a >50% size reduction, enlarged the necrotic area, and reduced intratumoral vasculature. 7KCLDE increased the survival rates of animals, without hematologic or liver toxicity. Although more pre-clinical studies should be performed, our preliminary results suggested that 7KCLDE is a promising novel preparation for cancer chemotherapy.
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Affiliation(s)
- Giovani M Favero
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Department of General Biology, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
| | - Jessica L Paz
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Andréia H Otake
- Centro de Investigação Translacional em Oncologia (LIM24), Departamento de Radiologia e Oncologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Instituto do Cancer do Estado de Sao Paulo (ICESP), SP, Brazil
| | - Durvanei A Maria
- Biochemistry and Biophysics Laboratories, Instituto Butantan, Sao Paulo, SP, Brazil
| | - Elia G Caldini
- Laboratory for Cell Biology, Department of Pathology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Raphael S S de Medeiros
- Centro de Investigação Translacional em Oncologia (LIM24), Departamento de Radiologia e Oncologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Instituto do Cancer do Estado de Sao Paulo (ICESP), SP, Brazil
| | - Debora F Deus
- Laboratory of Metabolism and Lipids, Heart Institute (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Roger Chammas
- Centro de Investigação Translacional em Oncologia (LIM24), Departamento de Radiologia e Oncologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Instituto do Cancer do Estado de Sao Paulo (ICESP), SP, Brazil
| | - Raul C Maranhão
- Laboratory of Metabolism and Lipids, Heart Institute (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.,Faculdade de Ciencias Farmaceuticas, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Sergio P Bydlowski
- Laboratory of Genetics and Molecular Hematology (LIM31), Department of Hematology, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
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Levy D, de Melo TC, Ruiz JL, Bydlowski SP. Oxysterols and mesenchymal stem cell biology. Chem Phys Lipids 2017; 207:223-230. [DOI: 10.1016/j.chemphyslip.2017.06.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 06/28/2017] [Accepted: 06/28/2017] [Indexed: 02/08/2023]
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7
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Outside-in, inside-out: Proteomic analysis of endothelial stress mediated by 7-ketocholesterol. Chem Phys Lipids 2017; 207:231-238. [DOI: 10.1016/j.chemphyslip.2017.06.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 06/23/2017] [Accepted: 06/23/2017] [Indexed: 12/15/2022]
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8
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Silva SF, Levy D, Ruiz JLM, de Melo TC, Isaac C, Fidelis ML, Rodrigues A, Bydlowski SP. Oxysterols in adipose tissue-derived mesenchymal stem cell proliferation and death. J Steroid Biochem Mol Biol 2017; 169:164-175. [PMID: 27133385 DOI: 10.1016/j.jsbmb.2016.04.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 04/22/2016] [Accepted: 04/27/2016] [Indexed: 11/26/2022]
Abstract
Mesenchymal stem cells (MSCs) are multipotent cells characterized by self-renewal and cellular differentiation capabilities. Oxysterols comprise a very heterogeneous group derived from cholesterol through enzymatic and non-enzymatic oxidation. Potent effects in cell death processes, including cytoxicity and apoptosis induction, were described in several cell lines. Very little is known about the effects of oxysterols in MSCs. 7-ketocholesterol (7-KC), one of the most important oxysterols, was shown to be cytotoxic to human adipose tissue-derived MSCs. Here, we describe the short-term (24h) cytotoxic effects of cholestan-3α-5β-6α-triol, 3,5 cholestan-7-one, (3α-5β-6α)- cholestane-3,6-diol, 7-oxocholest-5-en-3β-yl acetate, and 5β-6β epoxy-cholesterol, on MSCs derived from human adipose tissue. MSCs were isolated from adipose tissue obtained from three young, healthy women. Oxysterols, with the exception of 3,5 cholestan-7-one and 7-oxocholest-5-en-3β-yl acetate, led to a complex mode of cell death that include apoptosis, necrosis and autophagy, depending on the type of oxysterol and concentration, being cholestan-3α-5β-6α-triol the most effective. Inhibition of proliferation was also promoted by these oxysterols, but no changes in cell cycle were observed.
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Affiliation(s)
- Suelen Feitoza Silva
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av.Dr.Enéas de Carvalho Aguiar, 155, 1st floor, room 43, 05403-000, São Paulo/SP, Brazil
| | - Débora Levy
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av.Dr.Enéas de Carvalho Aguiar, 155, 1st floor, room 43, 05403-000, São Paulo/SP, Brazil
| | - Jorge Luis Maria Ruiz
- Federal University of Latin American Integration-UNILA, Life and Nature Science Institute, Av. Tarquinio Joslin dos Santos, 1000, Sala 105, CEP: 85870-901, Foz do Iguacu, Parana/PR, Brazil
| | - Thatiana Correa de Melo
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av.Dr.Enéas de Carvalho Aguiar, 155, 1st floor, room 43, 05403-000, São Paulo/SP, Brazil
| | - Cesar Isaac
- Cell Culture and Wound Healing Research Laboratory, Division of Plastic Surgery, Hospital das Clínicas, University of São Paulo Medical School, Av. Dr. Arnaldo, 455, 1st floor, 05403-000, São Paulo/SP, Brazil
| | - Maíra Luísa Fidelis
- Department of Earth and Exact Sciences, Federal University of São Paulo, São Paulo/SP, Brazil
| | - Alessandro Rodrigues
- Department of Earth and Exact Sciences, Federal University of São Paulo, São Paulo/SP, Brazil
| | - Sérgio Paulo Bydlowski
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av.Dr.Enéas de Carvalho Aguiar, 155, 1st floor, room 43, 05403-000, São Paulo/SP, Brazil.
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Abstract
Antiphospholipid syndrome (APS) is characterized by vascular thrombosis and/or obstetric complications associated with presence of antiphospholipid antibodies (aPL) but additional factors would also induce thrombosis. ABO (H) blood groups are known to be closely related to thrombosis, especially non-O blood type with venous events. The aim of this study was to investigate possible role of ABO (H) blood types in the thrombotic events in primary APS (PAPS). Seventy PAPS patients were selected for the study and were divided according to ABO blood group in: O PAPS (n = 26) and non-O PAPS (n = 44). ABO blood group phenotyping was performed by indirect technique. aPL anticardiolipin (aCL) and anti-βeta2 glycoprotein-1 (aβ2GPI) and the concentrations and activities of von Willebrand factor (VWF) were measured with ELISA. Lupus anticoagulant (LA) was detected by coagulation assays. A significant higher frequency of venous events was observed in non-O PAPS group (72.7 vs. 46.2 %, p = 0.040). In contrast, the frequency of arterial events was significantly higher in the O PAPS compared to the non-O PAPS group (69.2 vs. 36.4 %, respectively; p = 0.013). Frequencies of aCL, LA, aβ2GPI and triple aPL positivity were similar in both groups (p > 0.05). VWF antigen (75.54 ± 8.68 vs. 79.51 ± 7.07 IU/dl, p = 0.041) and activity (70.23 ± 11.96 vs. 77.92 ± 13.67 %, p = 0.020) were decreased in O PAPS compared to non-O blood group. VWF:CB/VWF:Ag ratio was similar among groups (p > 0.05). This is the first report that confirms the role of ABO blood system in thrombosis of PAPS and suggests that non-O blood group was related with venous events and O blood group with arterial thrombosis.
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Teshima T, Onoe H, Kuribayashi-Shigetomi K, Aonuma H, Kamiya K, Ishihara H, Kanuka H, Takeuchi S. Parylene mobile microplates integrated with an enzymatic release for handling of single adherent cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:912-921. [PMID: 24123995 DOI: 10.1002/smll.201301993] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 08/25/2013] [Indexed: 06/02/2023]
Abstract
An approach for manipulating single adherent cells is developed that is integrated with an enzymatic batch release. This strategy uses an array of releasable microfabricated mobile substrates, termed microplates, formed from a biocompatible polymer, parylene. A parylene microplate array of 10-70 μm in diameter can be formed on an alginate hydrogel sacrificial layer by using a standard photolithographic process. The parylene surfaces are modified with fibronectin to enhance cell attachment, growth, and stretching. To load single cells onto these microplates, cells are initially placed in suspension at an optimized seeding density and are allowed to settle, stretch, and grow on individual microplates. The sacrificial layer underneath the microplate array can be dissolved on a time-scale of several seconds without cytotoxicity. This system allows the inspection of selected single adherent cells. The ability to assess single cells while maintaining their adhesive properties will broaden the examination of a variety of attributes, such as cell shape and cytoskeletal properties.
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Affiliation(s)
- Tetsuhiko Teshima
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan
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Levy D, Ruiz JLM, Celestino AT, Silva SF, Ferreira AK, Isaac C, Bydlowski SP. Short-term effects of 7-ketocholesterol on human adipose tissue mesenchymal stem cells in vitro. Biochem Biophys Res Commun 2014; 446:720-5. [PMID: 24491549 DOI: 10.1016/j.bbrc.2014.01.132] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 01/25/2014] [Indexed: 01/27/2023]
Abstract
Oxysterols comprise a very heterogeneous group derived from cholesterol through enzymatic and non-enzymatic oxidation. Among them, 7-ketocholesterol (7-KC) is one of the most important. It has potent effects in cell death processes, including cytoxicity and apoptosis induction. Mesenchymal stem cells (MSCs) are multipotent cells characterized by self-renewal and cellular differentiation capabilities. Very little is known about the effects of oxysterols in MSCs. Here, we describe the short-term cytotoxic effect of 7-ketocholesterol on MSCs derived from human adipose tissue. MSCs were isolated from adipose tissue obtained from two young, healthy women. After 24 h incubation with 7-KC, mitochondrial hyperpolarization was observed, followed by a slight increase in the level of apoptosis and changes in actin organization. Finally, the IC50 of 7-KC was higher in these cells than has been observed or described in other normal or cancer cell lines.
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Affiliation(s)
- Débora Levy
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av. Dr. Enéas de Carvalho Aguiar,155, 1st Floor, Room 43, 05403-000 São Paulo, SP, Brazil
| | - Jorge Luis Maria Ruiz
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av. Dr. Enéas de Carvalho Aguiar,155, 1st Floor, Room 43, 05403-000 São Paulo, SP, Brazil
| | - Andrea Turbuck Celestino
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av. Dr. Enéas de Carvalho Aguiar,155, 1st Floor, Room 43, 05403-000 São Paulo, SP, Brazil
| | - Suelen Feitoza Silva
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av. Dr. Enéas de Carvalho Aguiar,155, 1st Floor, Room 43, 05403-000 São Paulo, SP, Brazil
| | - Adilson Kleber Ferreira
- Departament of Immunology, Laboratory of Tumor Immunology, Institute of Biomedical Science, University of Sao Paulo, Av. Prof. Lineu Prestes, 1730-Room 254, 05508-900 São Paulo, SP, Brazil
| | - Cesar Isaac
- Cell Culture and Wound Healing Research Laboratory, Division of Plastic Surgery, University of São Paulo, Av. Dr. Arnaldo, 455, 1st Floor, 05403-000 São Paulo, SP, Brazil
| | - Sérgio Paulo Bydlowski
- Laboratory of Genetics and Molecular Hematology (LIM31), University of São Paulo School of Medicine, Av. Dr. Enéas de Carvalho Aguiar,155, 1st Floor, Room 43, 05403-000 São Paulo, SP, Brazil.
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Klein Gunnewiek M, Di Luca A, Sui X, van Blitterswijk CA, Moroni L, Vancso GJ. Controlled Surface Initiated Polymerization of N-Isopropylacrylamide from Polycaprolactone Substrates for Regulating Cell Attachment and Detachment. Isr J Chem 2012. [DOI: 10.1002/ijch.201100118] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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13
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Singh S, Prasad S, Gupta HP, Singhal S, Gupta AK, Kumar A. Isolation and characterization of oviduct-specific glycoproteins from ampulla and isthmus parts of cyclic and acyclic buffalo for studying differential microenvironment. Appl Biochem Biotechnol 2012; 166:1814-30. [PMID: 22350939 DOI: 10.1007/s12010-012-9599-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Accepted: 02/03/2012] [Indexed: 11/28/2022]
Abstract
The present study characterized the glycoproteins synthesized by buffalo oviduct. Scanning electron microscopy analyses of the ampullary and isthmic segments of cyclic and acyclic buffaloes showed ultrastructural variations in ciliated and nonciliated cells. Mucosal proteins were extracted by scrapping of different segments of oviduct and, after centrifugation, the remainder tissues were subjected to establish primary cell culture system of oviduct epithelial cells and conditioned media were prepared. Time- and concentration-dependent effects of trypsinization on the establishment of primary monolayer culture showed that 0.25% trypsin for 1-2 min at 37 °C were the optimal conditions. Total protein content in oviductal tissues and conditioned media was quantified and analyzed by SDS-PAGE which showed marked variation in different segments of the oviduct. Western blot analysis revealed five major oviduct-specific glycoproteins (OGPs) in cyclic oviduct (ampulla and isthmus) with Mw 180, 95, 75, 66 and 35 kDa in the oviduct extract and two glycoproteins with Mw 95 and 66 kDa in conditioned media. However, in acyclic oviduct (ampulla and isthmus), three glycoproteins were immunostained with Mw 180, 95 and 66 kDa in the oviduct extract and one glycoprotein with Mw 66 kDa in conditioned media. Indirect Enzyme-Linked Immuno Sorbent Assay (ELISA) results showed significant differences of OGPs in different segments of cyclic and acyclic buffaloes and, thus, indicative of segmental variation in the synthesis and secretion of glycoproteins. Oviductal extract secretes more amounts of OGPs as compared to the conditioned medium. The role of these OGPs may be defined and exploited for influencing the fertilization process and/or subsequent embryonic development.
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Affiliation(s)
- Shubhra Singh
- Department of Molecular Biology & Genetic Engineering, College of Basic Sciences & Humanities, G.B. Pant University of Agriculture & Technology, Pantnagar 263145, Uttarakhand, India
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Lapworth JW, Hatton PV, Goodchild RL, Rimmer S. Thermally reversible colloidal gels for three-dimensional chondrocyte culture. J R Soc Interface 2012; 9:362-75. [PMID: 21775322 PMCID: PMC3243393 DOI: 10.1098/rsif.2011.0308] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Accepted: 06/28/2011] [Indexed: 11/12/2022] Open
Abstract
Healthy cells are required in large numbers to form a tissue-engineered construct and primary cells must therefore be increased in number in a process termed 'expansion'. There are significant problems with existing procedures, including cell injury and an associated loss of phenotype, but three-dimensional culture has been reported to offer a solution. Reversible gels, which allow for the recovery of cells after expansion would therefore have great value in the expansion of chondrocytes for tissue engineering applications, but they have received relatively little attention to date. In this study, we examined the synthesis and use of thermoresponsive polymers that form reversible three-dimensional gels for chondrocyte cell culture. A series of polymers comprising N-isopropylacrylamide (NIPAM) and styrene was synthesized before studying their thermoresponsive solution behaviour and gelation. A poly(NIPAM-co-styrene-graft-N-vinylpyrrolidone) variant was also synthesized in order to provide increased water content. Both random- and graft-copolymers formed particulate gels above the lower critical solution temperature and, on cooling, re-dissolved to allow enzyme-free cell recovery. Chondrocytes remained viable in all of these materials for 24 days, increased in number and produced collagen type II and glycosaminoglycans.
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Affiliation(s)
- James W. Lapworth
- Polymer and Biomaterials Chemistry Laboratories, Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK
- Biomaterials Research Group, School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK
| | - Paul V. Hatton
- Biomaterials Research Group, School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK
| | - Rebecca L. Goodchild
- Biomaterials Research Group, School of Clinical Dentistry, University of Sheffield, Sheffield S10 2TA, UK
| | - Stephen Rimmer
- Polymer and Biomaterials Chemistry Laboratories, Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK
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15
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Derivation, characterization and expansion of fetal chondrocytes on different microcarriers. Cytotechnology 2011; 63:633-43. [PMID: 21837435 DOI: 10.1007/s10616-011-9380-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Accepted: 07/19/2011] [Indexed: 10/17/2022] Open
Abstract
Fetal chondrocytes (FCs) have recently been identified as an alternative cell source for cartilage tissue engineering applications because of their partially chondrogenically differentiated phenotype and developmental plasticity. In this study, chondrocytes derived from fetal bovine cartilage were characterized and then cultured on commercially available Cytodex-1 and Biosilon microcarriers and thermosensitive poly(hydroxyethylmethacrylate)-poly(N-isopropylacrylamide) (PHEMA-PNIPAAm) beads produced by us. Growth kinetics of FCs were estimated by means of specific growth rate and metabolic activity assay. Cell detachment from thermosensitive microcarriers was induced by cold treatment at 4 °C for 20 min or enzymatic treatment was applied for the detachment of cells from Cytodex-1 and Biosilon. Although attachment efficiency and proliferation of FCs on PHEMA-PNIPAAm beads were lower than that of commercial Cytodex-1 and Biosilon microcarriers, these beads also supported growth of FCs. Detached cells from thermosensitive beads by cold induction exhibited a normal proliferative activity. Our results indicated that Cytodex-1 microcarrier was the most suitable material for the production of FCs in high capacity, however, 'thermosensitive microcarrier model' could be considered as an attractive solution to the process scale up for cartilage tissue engineering by improving surface characteristics of PHEMA-PNIPAAm beads.
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16
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Howell GJ, Herbert SP, Smith JM, Mittar S, Ewan LC, Mohammed M, Hunter AR, Simpson N, Turner AJ, Zachary I, Walker JH, Ponnambalam S. Endothelial cell confluence regulates Weibel-Palade body formation. Mol Membr Biol 2009; 21:413-21. [PMID: 15764371 DOI: 10.1080/09687860400011571] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Secretory granules called Weibel-Palade bodies (WPBs) containing Von Willebrand factor (VWF) are characteristic of the mammalian endothelium. We hypothesized that vascular-specific antigens such as VWF are linked to endothelial identity and proliferation in vitro. To test this idea, the cellular accumulation of VWF in WPBs was monitored as a function of cell proliferation, confluence and passage number in human umbilical vein endothelial cells (HUVECs). We found that as passage number increased the percentage of cells containing VWF in WPBs was reduced significantly, whilst the protein was still detected within the secretory pathway at all times. However, the endothelial-specific marker protein, PECAM-1, is present on all cells even when WPBs are absent, indicating partial maintenance of endothelial identity. Biochemical studies show that a significant pool of immature pro-VWF can be detected in sub-confluent HUVECs; however, a larger pool of mature, processed VWF is detected in confluent cells. Newly synthesized VWF must thus be differentially sorted and packaged along the secretory pathway in semi-confluent versus confluent endothelial cells. Our studies thus show that WPB formation is linked to the formation of a confluent endothelial monolayer.
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Affiliation(s)
- Gareth J Howell
- School of Biochemistry and Microbiology, University of Leeds, Leeds LS2 9JT, UK
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17
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Huck V, Niemeyer A, Goerge T, Schnaeker EM, Ossig R, Rogge P, Schneider MF, Oberleithner H, Schneider SW. Delay of acute intracellular pH recovery after acidosis decreases endothelial cell activation. J Cell Physiol 2007; 211:399-409. [PMID: 17167769 DOI: 10.1002/jcp.20947] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Reperfusion after ischemic conditions induces massive endothelial cell (EC) activation, an initial step of reperfusion injury. Reperfusion is characterized by reoxygenation, realkalinization and a localized increase of inflammatory stimuli. In this study, we focused on the influence of extracellular realkalinization on human umbilical vein endothelial cell (HUVEC) activation. We examined intracellular pH (pH(in)) and intracellular free calcium concentration ([Ca(2+)](in)), a second messenger known to mediate von Willebrand factor (VWF) exocytosis in endothelium, upon realkalinization. Furthermore, we measured the agonist-stimulated exocytosis of VWF, Interleukin-8 and soluble P-selectin (sP-Selectin) as markers of EC activation. To verify a morphological correlate of EC activation, we finally observed platelet-endothelial adherence during realkalinization using shear flow. Realkalinization of HUVEC was simulated by switching from bicarbonate buffered Ringer solution of an acidotic pH(ex) of 6.4 to a physiologic pH(ex) of 7.4. Extracellular realkalinization was accompanied by pH(in) recovery from 6.5 to 7.2 within 10 min. Application of cariporide, an inhibitor of the Na(+)/H(+) exchanger subtype 1 (NHE), during extracellular realkalinization significantly delayed the early kinetics of intracellular realkalinization. Histamine stimulated [Ca(2+)](in) was significantly increased upon realkalinization compared to control cells. Also agonist-stimulated release of VWF, Interleukin-8 and sP-Selectin was massively enhanced during pH(in) recovery in comparison to control. Furthermore, we observed an increased platelet binding to endothelium. Interestingly, each of these realkalinization-induced effects were significantly reduced by early application of cariporide. Therefore, delay of acute NHE-dependent pH(in) recovery may represent a promising mechanism for inhibition of EC activation upon reperfusion.
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Affiliation(s)
- Volker Huck
- Institute of Physiology II-Nanolab, University of Muenster, Muenster, Germany
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18
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Collett J, Crawford A, Hatton PV, Geoghegan M, Rimmer S. Thermally responsive polymeric hydrogel brushes: synthesis, physical properties and use for the culture of chondrocytes. J R Soc Interface 2007; 4:117-26. [PMID: 17254980 PMCID: PMC2358963 DOI: 10.1098/rsif.2006.0158] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Hydrogel brushes are materials composed of a water-swollen network, which contains polymer chains that are grafted with another polymer. Using a thermally responsive polymer, poly(N-isopropyl acrylamide) (polyNIPAM), as the graft component we are able to maintain the critical solution temperature (Tcrit), independent of the overall composition of the material, at approximately 32 degrees C. The change in swelling at Tcrit is a function of the amount of polyNIPAM in the system. However, there is a much smaller change in the surface contact angles at Tcrit. PolyNIPAM-based materials have generated considerable interest, as 'smart' substrates for the culture of cells and here, we show the utility of hydrogel brushes in cell culture. Chondrocytes attached to the hydrogel brushes and yielded viable cell cultures. Moreover, the chondrocytes could be released from the hydrogel brushes without the use of proteases by reducing the temperature of the cultures to below Tcrit to induce a change in the conformation of the polyNIPAM chain at Tcrit. The importance of the crosslink hydrogel component is illustrated by significant changes in cell attachment/cell viability as the crosslink density is changed.
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Affiliation(s)
- John Collett
- Department of Chemistry, University of SheffieldSheffield, South Yorkshire S3 7HF, UK
- Centre for Biomaterials and Tissue Engineering, University of SheffieldSheffield, South Yorkshire S3 7HQ, UK
| | - Aileen Crawford
- Centre for Biomaterials and Tissue Engineering, University of SheffieldSheffield, South Yorkshire S3 7HQ, UK
- School of Clinical Dentistry, University of SheffieldSheffield, South Yorkshire S10 2TA, UK
| | - Paul V Hatton
- Centre for Biomaterials and Tissue Engineering, University of SheffieldSheffield, South Yorkshire S3 7HQ, UK
- School of Clinical Dentistry, University of SheffieldSheffield, South Yorkshire S10 2TA, UK
| | - Mark Geoghegan
- Department of Physics and Astronomy, University of SheffieldSheffield, South Yorkshire S3 7RH, UK
| | - Stephen Rimmer
- Department of Chemistry, University of SheffieldSheffield, South Yorkshire S3 7HF, UK
- Centre for Biomaterials and Tissue Engineering, University of SheffieldSheffield, South Yorkshire S3 7HQ, UK
- Author for correspondence ()
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Zhu Y, Gao C, Liu X, He T, Shen J. Immobilization of Biomacromolecules onto Aminolyzed Poly(L-lactic acid) toward Acceleration of Endothelium Regeneration. ACTA ACUST UNITED AC 2004; 10:53-61. [PMID: 15009930 DOI: 10.1089/107632704322791691] [Citation(s) in RCA: 138] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
By reaction of poly(L-lactic acid) (PLLA) membrane with 1,6-hexanediamine, free amino groups were introduced onto a PLLA surface, through which biocompatible macromolecules such as gelatin, chitosan, or collagen were covalently immobilized by employing glutaraldehyde as a coupling agent. The existence of free amino groups on the aminolyzed PLLA surface was verified quantitatively by the ninhydrin analysis method, which revealed that surface NH(2) density increased with 1,6-hexanediamine concentration or aminolyzing time. Scanning force microscopy measurements detected an increase in surface roughness after aminolysis. The culture of human umbilical vein endothelial cells (HUVECs) in vitro proved that the cell proliferation rate and cell activity of both aminolyzed and biomacromolecule-immobilized PLLAs were improved compared with control PLLA. Scanning electron microscopy observation showed more spreading and flat cell morphology after HUVECs were cultured for 4 days on either aminolyzed or biomacromolecule-immobilized PLLA membranes. Confluent cell layers were observed on the modified PLLA. Measurement of von Willebrand factor secreted by these HUVECs confirmed that endothelium function was maintained. Therefore, aminolysis and biomacromolecule immobilization are promising ways to accelerate endothelium regeneration, which is crucial for blood vessel tissue engineering.
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Affiliation(s)
- Yabin Zhu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
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20
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Zhu Y, Gao C, Liu Y, Shen J. Endothelial cell functionsin vitro cultured on poly(L-lactic acid) membranes modified with different methods. ACTA ACUST UNITED AC 2004; 69:436-43. [PMID: 15127390 DOI: 10.1002/jbm.a.30007] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We recently developed several methods to enhance the cell-polymer interactions. Optimal conditions for each method have been revealed separately by in vitro cell culture. As a practical consideration for construction of tissue-engineered organs, it is necessary to consider which is the most suitable and convenient in clinical applications. To compare the efficiency of these methods with respect to cell functions, poly-L-lactic acid (PLLA) was selected as matrix being modified by 1) aminolysis (PLLA-NH(2)), 2) collagen immobilization with GA (PLLA-GA-Col), 3) chondroitin sulfate (CS)/collagen layer-by-layer (LBL) assembly (PLLA-CS/Col), 4) photo-induced grafting copolymerization of hydrophilic methacrylic acid (MAA) (PLLA-g-PMAA), and 5) further immobilization of collagen with 1-ethyl-3-(3-dimethylamino propyl) carbodiimide hydrochloride (EDAC) (PLLA-g-PMAA-Col). The surface wettability of the modified PLLA was determined by water contact angle measurements. The cell response to the modified PLLA was quantitatively assessed and compared by using human umbilical endothelial cells (HUVECs) culture. Our results indicate that all the modifications can improve the cytocompatibility of PLLA (e.g., cells can attach with spreading morphology, proliferate and secret vWF and 6-keto-PGF(1 alpha)). All the collagen-modified PLLA showed more positive cell response than those purely aminolyzed or PMAA grafted. Among all the methods, collagen immobilization by LBL assembly or GA bridging after aminolysis is more acceptable for the convenience and applicability to scaffolds.
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Affiliation(s)
- Yabin Zhu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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21
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Zhu Y, Gao C, He T, Liu X, Shen J. Layer-by-layer assembly to modify poly(l-lactic acid) surface toward improving its cytocompatibility to human endothelial cells. Biomacromolecules 2003; 4:446-52. [PMID: 12625744 DOI: 10.1021/bm025723k] [Citation(s) in RCA: 143] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel technique to introduce free amino groups onto polyester scaffolds via aminolyzing the ester groups with diamine has been developed recently. Positively charged chitosan was then deposited onto the aminolyzed poly(l-lactic acid) (PLLA) membrane surface in a layer-by-layer assembly manner using poly(styrene sulfonate, sodium salt) (PSS) as a negatively charged polyelectrolyte. The layer-by-layer deposition process of PSS and chitosan was monitored by UV-vis absorbance spectroscopy, energy transfer by fluorescence spectroscopy, and advancing contact angle measurements. The existed chitosan obviously improved the cytocompatibility of PLLA to human endothelial cells. The cell attachment, activity, and proliferation on the PLLA membranes assembled with three or five bilayers of PSS/chitosan with chitosan as the outermost layer were better than those with one bilayer of PSS/chitosan or the control PLLA. The cells also showed morphology of an elongated shape with abundant cytoplasm, and a confluent cell layer was reached after being cultured for 4 days. Measurement of von Willebrand factor secreted by these endothelial cells (ECs) verified the endothelial function. Hence, better ECs compatible PLLA were produced.
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Affiliation(s)
- Yabin Zhu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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22
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Zhu Y, Gao C, Liu X, Shen J. Surface modification of polycaprolactone membrane via aminolysis and biomacromolecule immobilization for promoting cytocompatibility of human endothelial cells. Biomacromolecules 2002; 3:1312-9. [PMID: 12425670 DOI: 10.1021/bm020074y] [Citation(s) in RCA: 395] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amino groups were covalently introduced onto a polycaprolactone (PCL) surface by the reaction between 1,6-hexanediamine and the ester groups of PCL. The occurrence of the aminolysis and the introduction of free NH(2) groups were verified qualitatively by fluorescence spectroscopy, where rhodamine B isothiocyanate was employed to label NH(2) groups, and quantitatively by absorbance spectroscopy, where ninhydrin was used to react with NH(2) to generate a blue product. Due to the presence of deep pores on the PCL membrane, the aminolysis reaction could penetrate as deep as 50 microm to yield NH(2) density as high as 2 x 10(-7) mol/cm(2). By use of the NH(2) groups as active sites, biocompatible macromolecules such as gelatin, chitosan, or collagen were further immobilized on the aminolyzed PCL membrane via a cross-linking agent, glutaraldehyde. X-ray photoelectron spectroscopy (XPS) and surface wettability measurements confirmed the coupling of the biomacromolecules. The endothelial cell culture proved that the cytocompatibility of the aminolyzed PCL was improved slightly regardless of the NH(2) amount on the surface. After immobilization of the biomacromolecules, however, the cell attachment and proliferation ratios were obviously improved and the cells showed a similar morphology to those on tissue culture polystyrene. Measurement of the von Willebrand factor (vWF) secreted by these endothelial cells (ECs) verified the endothelial function. Hence, a better EC-compatible PCL was produced.
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Affiliation(s)
- Yabin Zhu
- Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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