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Dzhoyashvili NA, Thompson K, Gorelov AV, Rochev YA. Film Thickness Determines Cell Growth and Cell Sheet Detachment from Spin-Coated Poly(N-Isopropylacrylamide) Substrates. ACS APPLIED MATERIALS & INTERFACES 2016; 8:27564-27572. [PMID: 27661256 DOI: 10.1021/acsami.6b09711] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Poly(N-isopropylacrylamide) (pNIPAm) is widely used to fabricate thermoresponsive surfaces for cell sheet detachment. Many complex and expensive techniques have been employed to produce pNIPAm substrates for cell culture. The spin-coating technique allows rapid fabrication of pNIPAm substrates with high reproducibility and uniformity. In this study, the dynamics of cell attachment, proliferation, and function on non-cross-linked spin-coated pNIPAm films of different thicknesses were investigated. The measurements of advancing contact angle revealed increasing contact angles with increasing film thickness. Results suggest that more hydrophilic 50 and 80 nm thin pNIPAm films are more preferable for cell sheet fabrication, whereas more hydrophobic 300 and 900 nm thick spin-coated pNIPAm films impede cell attachment. These changes in cell behavior were correlated with changes in thickness and hydration of pNIPAm films. The control of pNIPAm film thickness using the spin-coating technique offers an effective tool for cell sheet-based tissue engineering.
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Affiliation(s)
| | | | - Alexander V Gorelov
- School of Chemistry and Chemical Biology, University College Dublin , D04 R7R0, Belfield, Dublin 4, Ireland
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Science , 142290 Pushchino, Moscow Region, Russia
| | - Yuri A Rochev
- Sechenov First Moscow State Medical University , Institute for Regenerative Medicine, 119991 Moscow, Russia
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Tiwari A, Tursky ML, Nekkanti LP, Jenkin G, Kirkland MA, Pande G. Expansion of Human Hematopoietic Stem/Progenitor Cells on Decellularized Matrix Scaffolds. ACTA ACUST UNITED AC 2016; 36:1C.15.1-1C.15.16. [PMID: 26840223 DOI: 10.1002/9780470151808.sc01c15s36] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Umbilical cord blood (UCB) is one of the richest sources for hematopoietic stem/progenitor cells (HSPCs), with more than 3000 transplantations performed each year for the treatment of leukemia and other bone marrow, immunological, and hereditary diseases. However, transplantation of single cord blood units is mostly restricted to children, due to the limited number of HSPC per unit. This unit develops a method to increase the number of HSPCs in laboratory conditions by using cell-free matrices from bone marrow cells that mimic 'human-body-niche-like' conditions as biological scaffolds to support the ex vivo expansion of HSPCs. In this unit, we describe protocols for the isolation and characterization of HSPCs from UCB and their serum-free expansion on decellularized matrices. This method may also help to provide understanding of the biochemical organization of hematopoietic niches and lead to suggestions regarding the design of tissue engineering-based biomimetic scaffolds for HSPC expansion for clinical applications.
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Affiliation(s)
- Abhilasha Tiwari
- CSIR Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India.,Geelong Technology Precinct, Deakin University, Geelong, Victoria, Australia.,The Ritchie Centre, Hudson Institute of Medical Research, Monash University, Clayton, Australia
| | - Melinda L Tursky
- Lowy Cancer Research Centre, University of New South Wales, New South Wales, Australia
| | - Lakshmi P Nekkanti
- The Ritchie Centre, Hudson Institute of Medical Research, Monash University, Clayton, Australia
| | - Graham Jenkin
- The Ritchie Centre, Hudson Institute of Medical Research, Monash University, Clayton, Australia
| | - Mark A Kirkland
- Geelong Technology Precinct, Deakin University, Geelong, Victoria, Australia
| | - Gopal Pande
- CSIR Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India
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Oubari F, Amirizade N, Mohammadpour H, Nakhlestani M, Zarif MN. The Important Role of FLT3-L in Ex Vivo Expansion of Hematopoietic Stem Cells following Co-Culture with Mesenchymal Stem Cells. CELL JOURNAL 2015. [PMID: 26199899 PMCID: PMC4503834 DOI: 10.22074/cellj.2016.3715] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Objective Hematopoietic stem cells (HSCs) transplantation using umbilical cord blood
(UCB) has improved during the last decade. Because of cell limitations, several studies focused on the ex vivo expansion of HSCs. Numerous investigations were performed to introduce the best cytokine cocktails for HSC expansion The majority used the Fms-related
tyrosine kinase 3 ligand (FLT3-L) as a critical component. According to FLT3-L biology, in
this study we have investigated the hypothesis that FLT3-L only effectively induces HSCs
expansion in the presence of a mesenchymal stem cell (MSC) feeder.
Materials and Methods In this experimental study, HSCs and MSCs were isolated from
UCB and placenta, respectively. HSCs were cultured in different culture conditions in the
presence and absence of MSC feeder and cytokines. After ten days of culture, total nucleated cell count (TNC), cluster of differentiation 34+(CD34+) cell count, colony forming
unit assay (CFU), long-term culture initiating cell (LTC-IC), homeobox protein B4 (HoxB4)
mRNA and surface CD49d expression were evaluated. The fold increase for some culture
conditions was compared by the t test.
Results HSCs expanded in the presence of cytokines and MSCs feeder. The rate of expansion in the co-culture condition was two-fold more than culture with cytokines (P<0.05).
FLT3-L could expand HSCs in the co-culture condition at a level of 20-fold equal to the
presence of stem cell factor (SCF), thrombopoietin (TPO) and FLT3-L without feeder cells.
The number of extracted colonies from LTC-IC and CD49d expression compared with a
cytokine cocktail condition meaningfully increased (P<0.05).
Conclusion FLT3-L co-culture with MSCs can induce high yield expansion of HSCs and
be a substitute for the universal cocktail of SCF, TPO and FLT3-L in feeder-free culture.
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Affiliation(s)
- Farhad Oubari
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran ; Faulty of Paramedics, Kermanshah University of Medical Science, Kermanshah, Iran
| | - Naser Amirizade
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Hemn Mohammadpour
- Department of Medical Immunology, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Mozhdeh Nakhlestani
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Mahin Nikougoftar Zarif
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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Tiwari A, Tursky ML, Kirkland MA, Pande G. Expansion of human hematopoietic stem/progenitor cells on decellularized matrix scaffolds. ACTA ACUST UNITED AC 2014; 28:1C.15.1-1C.15.15. [PMID: 24510768 DOI: 10.1002/9780470151808.sc01c15s28] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Umbilical cord blood (UCB) is one of the richest sources for hematopoietic stem/progenitor cells (HSPCs), with more than 3000 transplantations performed each year for the treatment of leukemia and other bone marrow, immunological, and hereditary diseases. However, transplantation of single cord blood units is mostly restricted to children, due to the limited number of HSPC per unit. This unit develops a method to increase the number of HSPCs in laboratory conditions by using cell-free matrices from bone marrow cells that mimic 'human-body niche-like' conditions as biological scaffolds to support the ex vivo expansion of HSPCs. In this unit, we describe protocols for the isolation and characterization of HSPCs from UCB and their serum-free expansion on decellularized matrices. This method may also help to provide understanding of the biochemical organization of hematopoietic niches and lead to suggestions regarding the design of tissue engineering-based biomimetic scaffolds for HSPC expansion for clinical applications.
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Affiliation(s)
- Abhilasha Tiwari
- CSIR Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India; Geelong Technology Precinct, Deakin University, Geelong, Victoria, Australia; Monash Institute of Medical Research, Monash University, Clayton, Victoria, Australia
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Tiwari A, Tursky ML, Mushahary D, Wasnik S, Collier FM, Suma K, Kirkland MA, Pande G. Ex vivo expansion of haematopoietic stem/progenitor cells from human umbilical cord blood on acellular scaffolds prepared from MS-5 stromal cell line. J Tissue Eng Regen Med 2012; 7:871-83. [PMID: 22511368 DOI: 10.1002/term.1479] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 11/18/2011] [Accepted: 01/16/2012] [Indexed: 12/13/2022]
Abstract
Lineage-specific expansion of haematopoietic stem/progenitor cells (HSPCs) from human umbilical cord blood (UCB) is desirable because of their several applications in translational medicine, e.g. treatment of cancer, bone marrow failure and immunodeficiencies. The current methods for HSPC expansion use either cellular feeder layers and/or soluble growth factors and selected matrix components coated on different surfaces. The use of cell-free extracellular matrices from bone marrow cells for this purpose has not previously been reported. We have prepared insoluble, cell-free matrices from a murine bone marrow stromal cell line (MS-5) grown under four different conditions, i.e. in presence or absence of osteogenic medium, each incubated under 5% and 20% O₂ tensions. These acellular matrices were used as biological scaffolds for the lineage-specific expansion of magnetically sorted CD34⁺ cells and the results were evaluated by flow cytometry and colony-forming assays. We could get up to 80-fold expansion of some HSPCs on one of the matrices and our results indicated that oxygen tension played a significant role in determining the expansion capacity of the matrices. A comparative proteomic analysis of the matrices indicated differential expression of proteins, such as aldehyde dehydrogenase and gelsolin, which have previously been identified as playing a role in HSPC maintenance and expansion. Our approach may be of value in identifying factors relevant to tissue engineering-based ex vivo HSPC expansion, and it may also provide insights into the constitution of the niche in which these cells reside in the bone marrow.
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Affiliation(s)
- Abhilasha Tiwari
- CSIR Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India; Deakin University, Waurn Ponds, Geelong, VIC, Australia
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Moshaver B, van der Pol MA, Westra AH, Ossenkoppele GJ, Zweegman S, Schuurhuis GJ. Chemotherapeutic treatment of bone marrow stromal cells strongly affects their protective effect on acute myeloid leukemia cell survival. Leuk Lymphoma 2008; 49:134-48. [PMID: 17926185 DOI: 10.1080/10428190701593636] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Bone marrow stromal cells (BMSCs) have been found to support leukemic cell survival; however, the mechanisms responsible are far from elucidated yet. Therefore, the effect of BMSCs on both proliferation and apoptosis characteristics of acute myeloid leukaemia (AML) cells was investigated as well as the effect of BMSCs exposure to chemotherapy on the stromal supportive capacity. Leukemic HL-60 and primary AML cells were either untreated or treated with cytarabine and subsequently cultured for 3-4 days, in the presence or absence of untreated or cytarabine-treated BMSCs. The effect on proliferation and apoptosis was investigated with flow cytometry using CFSE labeling and Syto16 and 7AAD staining. BMSCs were found to maintain cytarabine-exposed primary AML cells by protection against spontaneous apoptosis. Accordingly, an increase in phosphorylated-AKT and Bcl-2 expression was found. Concomitant exposure of BMSCs to cytarabine resulted in a dose-dependent decrease of protective capacity of BMSCs. Thus, inhibition of spontaneous apoptosis of leukemic cells mediated by phosphorylation of AKT/Bcl-2 pathway results in protection of leukemic cells by BMSCs, which decreases after BMSCs exposure to chemotherapy. Targeting both the tumor cells and intervening in their interaction with the bone marrow microenvironment may thus affect clinical outcome in AML.
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Affiliation(s)
- Bijan Moshaver
- Department of Hematology, VU University Medical Center, Amsterdam, The Netherlands
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Seki M, Kameoka J, Takahashi S, Harigae H, Yanai N, Obinata M, Sasaki T. Identification of tenascin-C as a key molecule determining stromal cell-dependent erythropoiesis. Exp Hematol 2006; 34:519-27. [PMID: 16569598 DOI: 10.1016/j.exphem.2006.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2005] [Revised: 12/20/2005] [Accepted: 01/03/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVE We previously established 33 bone marrow stromal cell lines from SV40 T-antigen transgenic mice. Of these, 27 clones supported erythroid colony formation, while 6 did not. The objective of this study is to identify the molecules that determine these erythroid colony-forming activities. MATERIALS AND METHODS We compared gene expression profiling by DNA microarray between cell lines that support erythropoiesis (E(+); TBR9, 184, 31-2) and cell lines that do not (E(-); TBR17, 33, 511). Among the differentially expressed genes, we selected candidate genes with results of quantitative reverse transcriptase polymerase chain reaction, and examined the effect of small interfering RNA (siRNA) and the addition of exogenous proteins on the erythroid colony formation. RESULTS Out of 7226 genes examined, 138 and 282 genes were upregulated and downregulated in E(+) by threefold or more, respectively. We have selected one of the upregulated genes, tenascin-C (TN-C), as a candidate. Expressions of TN-C in E(+) were all higher than the three E-cell lines, with a mean of 3.6-fold. The number of erythroid colonies in the presence of TN-C siRNA was significantly lower than that of control siRNA in TBR9 (20.7 +/- 6.3 vs 4.7 +/- 4.8 colonies; p = 0.01) and in TBR184 (13.3 +/- 5.3 vs 0.3 +/- 0.5; p = 0.02). Moreover, addition of exogenous TN-C enhanced the number of erythroid colonies in TBR184 (13.3 +/- 3.5 vs 20.0 +/- 2.0; p = 0.04) and in TBR31-2 (7.5 +/- 3.1 vs 13.5 +/- 2.6; p = 0.03). CONCLUSION These results suggest that TN-C is responsible for determining the stromal cell-dependent erythropoiesis.
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Affiliation(s)
- Masanori Seki
- Department of Rheumatology and Hematology, Tohoku University Graduate School of Medicine, Sendai, Japan
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Theunissen K, Verfaillie CM. A multifactorial analysis of umbilical cord blood, adult bone marrow and mobilized peripheral blood progenitors using the improved ML-IC assay. Exp Hematol 2005; 33:165-72. [PMID: 15676210 DOI: 10.1016/j.exphem.2004.10.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2004] [Revised: 10/21/2004] [Accepted: 10/21/2004] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Assays that can evaluate the potential of individual human hematopoietic stem cells (HSC) are still lacking. We previously developed the myeloid-lymphoid initiating cell (ML-IC) assay that enumerates single CD34(+) cells that generate long-term culture-initiating (LTC-IC) and NK-initiating (NK-IC) daughter cells, or single primitive progenitors with multilineage potential. When transplanted in vivo, umbilical cord blood (UCB) has greater repopulating ability than bone marrow (BM) or mobilized peripheral blood (MPB). Whether the greater in vivo repopulating ability is due to an increased frequency of HSC in UCB and generative potential of UCB, BM, and MPB CD34(+) cells is not known. MATERIALS AND METHODS Single UCB, BM, and MPB CD34(+)CD38(-)Lin(-) or CD34(+)CD38(-)CD33(-) cells were plated in ML-IC assay and after 2 to 4 weeks, progeny was evaluated for frequency and generative potential of ML-IC. We also tested whether the ML-IC assay could be used to define if increased numbers of primitive progenitors generated by different cytokines in expansion cultures are mediated by recruitment of quiescent cells or by increasing their generative potential. RESULTS The frequency of ML-IC in BM, UCB, and MPB was similar, but the generative potential of UCB ML-IC was significantly higher. Substitution of Flt3-L, SCF, and IL-7 with Flt3-L and thrombopoietin significantly increased the generative potential of ML-IC, whereas Flt3-L, SCF, and hyper-IL-6 increased both ML-IC frequency and generative potential. CONCLUSION The ML-IC assay demonstrates that the greater repopulating ability of UCB is due to the higher generative ability of HSC in UCB. Furthermore, the ML-IC assay can discriminate between cytokine-mediated expansion of hematopoietic progenitors by enhancing generation of immature daughter cells or by recruiting otherwise quiescent cells.
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Affiliation(s)
- Koen Theunissen
- Stem Cell Biology Program, Department of Medicine and Cancer Center, University of Minnesota Medical School, Minneapolis, Minn., USA
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Ito Y, Hasuda H, Yamauchi T, Komatsu N, Ikebuchi K. Immobilization of erythropoietin to culture erythropoietin-dependent human leukemia cell line. Biomaterials 2004; 25:2293-8. [PMID: 14741594 DOI: 10.1016/j.biomaterials.2003.09.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
To investigate the effect of immobilized cytokine, erythropoietin (Epo) was immobilized on a culture plate and the Epo-dependent human leukemia cell line UT-7/Epo then was cultured upon the plate. A photo-reactive gelatin was mixed with Epo and the mixture was cast on a plate. The plate was then irradiated with ultraviolet light in the presence or absence of a photo-mask. After washing with water, a micropatterned or unpatterned surface was formed. A leukemia cell line dependent on Epo, UT-7/Epo, was cultured on the sample plate. On the micropatterned surface, apoptosis of cells was induced on the surface without Epo, but was not observed on the Epo-immobilized surface. This result demonstrated that Epo stimulated the cells even after immobilization. Although the activity of immobilized Epo was low, the activity was slightly higher than that achieved by soluble Epo at higher concentration. In addition, the immobilized Epo could be repeatedly used for culture of UT-7/Epo cell. The present study provided a convenient immobilization method and indicated that immobilization of cytokines will be useful for creating an artificial cell culture device.
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Affiliation(s)
- Yoshihiro Ito
- Kanagawa Academy of Science and Technology, Regenerative Medical Bioreactor Project, 3-2-1 Sakado, Takatsu-ku, Kawasaki 213-0012, Japan.
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Greco NJ, Lee WR, Moroff G. Increased transmigration of G-CSF-mobilized peripheral blood CD34+ cells after overnight storage at 37°C. Transfusion 2003; 43:1575-86. [PMID: 14617318 DOI: 10.1046/j.1537-2995.2003.00572.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND G-CSF-mobilized PBPCs are utilized in allogeneic and autologous PBPC transplants. Homing, adhesion, and transmigration of hematopoietic CD34+ cells are required for successful engraftment. Hematopoietic CD34+ cells undergo directional migration toward the CXCR4 receptor ligand stromal-derived factor-1 (SDF-1). Limited data are available on the effects of liquid storage and cryopreservation on PBPC CD34+ cells. STUDY DESIGN AND METHODS Magnetic-assisted cell sorting (MACS)-selected CD34+ cells were assayed for retention of in vitro transmigration and phenotypic changes of unit-matched liquid-stored and cryopreserved PBPC samples from healthy donors. Studies evaluated whether transmigration of CD34+ cells in Iscove's modified Dulbecco's medium plus 1 percent HSA alone or in medium supplemented with SCF or allogeneic plasma was affected by overnight incubation at 37 degrees C, relative to nonincubated conditions. RESULTS Transmigration was maintained during liquid storage at 1 to 6 degrees C during a 2-day period and in unit-matched cryopreserved-thawed samples that had been initially liquid stored. Overnight incubation at 37 degrees C of MACS-selected unit-matched liquid-stored or cryopreserved-thawed CD34+ cells resulted in substantially increased transmigration, in particular with noncoated filters chemoattracted with the chemokine SDF-1. CONCLUSION CD34+ cell transmigration was comparable between liquid-stored and cryopreserved samples, and both demonstrated similar increases after overnight incubation at 37 degrees C.
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Affiliation(s)
- Nicholas J Greco
- American Red Cross, Blood & Cell Therapy Development Department, Holland Laboratory, Rockville, Maryland, USA.
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