1
|
Ma XY, Bao HJ, Cui L, Zou J. The graft of autologous adipose-derived stem cells in the corneal stromal after mechanic damage. PLoS One 2013; 8:e76103. [PMID: 24098428 PMCID: PMC3787960 DOI: 10.1371/journal.pone.0076103] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 08/20/2013] [Indexed: 12/13/2022] Open
Abstract
This study was designed to explore the feasibility of using autologous rabbit adipose derived stem cells (rASCs) as seed cells and polylactic-co-glycolic acid (PLGA) as a scaffold for repairing corneal stromal defects. rASCs isolated from rabbit nape adipose tissue were expanded and seeded on a PLGA scaffold to fabricate cell-scaffold constructs. After 1 week of cultivation in vitro, the cell-scaffold complexes were transplanted into corneal stromal defects in rabbits. In vivo, the autologous rASCs-PLGA constructed corneal stroma gradually became transparent without corneal neovascularization after 12 weeks. Hematoxylin and eosin staining and transmission electron microscopy examination revealed that their histological structure and collagen fibril distribution at 24 weeks after implantation were similar to native counterparts. As to the defect treated with PLGA alone, the stromal defects remained. And scar tissue was observed in the untreated-group. The implanted autologous ASCs survived up to 24 weeks post-transplantation and differentiated into functional keratocytes, as assessed by the expression of aldehyde-3-dehydrogenase1A1 (ALDH1A1) and cornea-specific proteoglycan keratocan. Our results revealed that autologous rASCs could be one of the cell sources for corneal stromal restoration in diseased corneas or for tissue engineering of a corneal equivalent.
Collapse
Affiliation(s)
- Xiao-Yun Ma
- Department of Ophthalmology, Guanghua Integrative Medicine Hospital, Shanghai, China
| | - Hui-Jing Bao
- Department of Ophthalmology, Shanghai Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Cui
- Medical Technology and Engineering Institute, Henan Science and Technology University, Luoyang, Henan, China
- * E-mail: (JZ); (LC)
| | - Jun Zou
- Department of Ophthalmology, Shanghai Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: (JZ); (LC)
| |
Collapse
|
2
|
Govers C, Berrevoets C, Treffers-Westerlaken E, Broertjes M, Debets R. Magnetic-activated cell sorting of TCR-engineered T cells, using tCD34 as a gene marker, but not peptide-MHC multimers, results in significant numbers of functional CD4+ and CD8+ T cells. Hum Gene Ther Methods 2012; 23:213-24. [PMID: 22871260 PMCID: PMC4015082 DOI: 10.1089/hgtb.2012.074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 06/25/2012] [Indexed: 01/14/2023] Open
Abstract
T cell-sorting technologies with peptide-MHC multimers or antibodies against gene markers enable enrichment of antigen-specific T cells and are expected to enhance the therapeutic efficacy of clinical T cell therapy. However, a direct comparison between sorting reagents for their ability to enrich T cells is lacking. Here, we compared the in vitro properties of primary human T cells gene-engineered with gp100(280-288)/HLA-A2-specific T cell receptor-αβ (TCRαβ) on magnetic-activated cell sorting (MACS) with various peptide-MHC multimers or an antibody against truncated CD34 (tCD34). With respect to peptide-MHC multimers, we observed that Streptamer(®), when compared with pentamers and tetramers, improved T cell yield as well as level and stability of enrichment, of TCR-engineered T cells (>65% of peptide-MHC-binding T cells, stable for at least 6 weeks). In agreement with these findings, Streptamer, the only detachable reagent, revealed significant T cell expansion in the first week after MACS. Sorting TCR and tCD34 gene-engineered T cells with CD34 monoclonal antibody (mAb) resulted in the most significant T cell yield and enrichment of T cells (>95% of tCD34 T cells, stable for at least 6 weeks). Notably, T cells sorted with CD34 mAb, when compared with Streptamer, bound about 2- to 3-fold less peptide-MHC but showed superior antigen-specific upregulated expression of CD107a and production of interferon (IFN)-γ. Multiparametric flow cytometry revealed that CD4(+) T cells, uniquely present in CD34 mAb-sorted T cells, contributed to enhanced IFN-γ production. Taken together, we postulate that CD34 mAb-based sorting of gene-marked T cells has benefits toward applications of T cell therapy, especially those that require CD4(+) T cells.
Collapse
Affiliation(s)
- Coen Govers
- Laboratory of Experimental Tumor Immunology, Department of Medical Oncology, Erasmus University Medical Center-Daniel den Hoed Cancer Center, 3015 GE Rotterdam, The Netherlands
| | | | | | | | | |
Collapse
|
3
|
Tiemann U, Sgodda M, Warlich E, Ballmaier M, Schöler HR, Schambach A, Cantz T. Optimal reprogramming factor stoichiometry increases colony numbers and affects molecular characteristics of murine induced pluripotent stem cells. Cytometry A 2011; 79:426-35. [DOI: 10.1002/cyto.a.21072] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 03/25/2011] [Accepted: 04/04/2011] [Indexed: 12/18/2022]
|
4
|
Duramad O, Laysang A, Li J, Ishii Y, Namikawa R. Pharmacologic expansion of donor-derived, naturally occurring CD4(+)Foxp3(+) regulatory T cells reduces acute graft-versus-host disease lethality without abrogating the graft-versus-leukemia effect in murine models. Biol Blood Marrow Transplant 2010; 17:1154-68. [PMID: 21145405 DOI: 10.1016/j.bbmt.2010.11.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Accepted: 11/18/2010] [Indexed: 10/18/2022]
Abstract
Adoptive transfer of regulatory T cells (Tregs) prevents graft-versus-host disease (GVHD) in mouse models, indicating a pivotal role for Tregs in controlling GVHD. The present study demonstrates the efficacy of Tregs pharmacologically induced in vivo in GVHD prevention. A single i.v. administration of a liposomal formulation of α-galactosylceramide (RGI-2001) at the time of allogeneic bone marrow transplantation with spleen cells significantly prolonged the survival of mice experiencing lethal acute GVHD. RGI-2001 expanded donor-derived CD4(+)Foxp3(+) Tregs in the spleen, lymph nodes, and bone marrow in a dose-dependent manner. On day 15 posttransplantation, the spleens of mice treated with RGI-2001 (1 μg/kg) contained 5-fold higher percentages or 10-fold higher numbers of CD4(+)Foxp3(+) Tregs compared with the spleens of untreated mice. Host-specific immunosuppression was introduced in treated mice, whereas the responsiveness to third-party alloantigens and leukemia cells was maintained. Using Foxp3:GFP reporter mice as donors, it was clearly shown that RGI-2001 expanded the pre-existing naturally occurring Tregs (nTregs) in donor spleen cells. Finally, RGI-2001 synergized with a subtherapeutic dose of rapamycin in nTreg expansion and further prolonged survival. Our results provide the first demonstration of the efficacy of nTregs pharmacologically expanded in vivo in preventing acute GVHD without abrogation of the beneficial graft-versus-leukemia effect.
Collapse
Affiliation(s)
- Omar Duramad
- Research and Development, REGiMMUNE Inc, Santa Clara, California 95054, USA
| | | | | | | | | |
Collapse
|
5
|
Zhang YQ, Zhang WJ, Liu W, Hu XJ, Zhou GD, Cui L, Cao Y. Tissue Engineering of Corneal Stromal Layer with Dermal Fibroblasts: Phenotypic and Functional Switch of Differentiated Cells in Cornea. Tissue Eng Part A 2008; 14:295-303. [PMID: 18333782 DOI: 10.1089/tea.2007.0200] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yan Qing Zhang
- Shanghai Jiao Tong University School of Medicine, Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| | - Wen Jie Zhang
- Shanghai Jiao Tong University School of Medicine, Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| | - Wei Liu
- Shanghai Jiao Tong University School of Medicine, Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| | - Xiao Jie Hu
- Shanghai Jiao Tong University School of Medicine, Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| | - Guang Dong Zhou
- Shanghai Jiao Tong University School of Medicine, Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| | - Lei Cui
- Shanghai Jiao Tong University School of Medicine, Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| | - Yilin Cao
- Shanghai Jiao Tong University School of Medicine, Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai, China
| |
Collapse
|
6
|
Dijon M, Torne-Celer C, Moreau T, Tonnelle C, Chabannon C. Expression and recombination of the EGFP and EYFP genes in lentiviral vectors carrying two heterologous promoters. Cytotherapy 2005; 7:417-26. [PMID: 16236631 DOI: 10.1080/14653240500319317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND Expressing two genes in the progeny of stem and progenitor cells that are transduced with a unique viral vector is desirable in certain situations. We tested the ability of two lentiviral vectors to transduce human cells of hematopoietic origin and concomitantly express two reporter genes, either EGFP (enhanced green fluorescent protein) and DsRed2, or EGFP and EYFP (enhanced yellow fluorescent protein), from two internal promoters. METHODS The vectors were generated from the pTRIP deltaU3 EF1alpha EGFP lentiviral vector. Following transduction of hematopoietic and non-hematopoietic cell lines, we performed FACS, PCR and Southern blot analyzes to quantify transduction, integration efficiencies and size of integrated lentiviral vectors, respectively. RESULTS The detection of DsRed2 fluorescence appeared unexpectedly low in human cells of hematopoietic origin. Alternatively, a modification in the flow cytometry assay allowed us to distinguish between the two overlapping fluorescence signals emitted by EGFP and EYFP, when transduced cells were excited with a 488-nm laser beam. However, the low frequency of double-positive EGFP+ EYFP+ cells, and the existence of single-positive, mostly EGFP- EYFP+, cells, prompted us to search for recombinations in the vector sequence. Southern blotting of DNA obtained from transduced cells indeed demonstrated that recombination had occurred between the two closely related EGFP and EYFP sequences. DISCUSSION These observations suggest that recombination occurred within the EGFP and EYFP genes, which differ by only four amino acids. We conclude that the insertion of two highly homologous sequences into a lentiviral backbone can favor recombination.
Collapse
Affiliation(s)
- M Dijon
- Centre de Thérapie Cellulaire et Génique, Institut Paoli-Calmettes, Centre Régional de Lutte Contre le Cancer Provence-Alpes-Côte d'Azur, and Unité Mixte de Recherche 599, Institut de Recherche sur le Cancer de Marseille, Marseille, France
| | | | | | | | | |
Collapse
|
7
|
Affiliation(s)
- David W Galbraith
- University of Arizona, Department of Plant Sciences, Institute for Biomedical Science and Biotechnology, Tucson, Arizona 85721, USA
| |
Collapse
|
8
|
Relander T, Brun ACM, Olsson K, Pedersen L, Richter J. Overexpression of gibbon ape leukemia virus (GALV) receptor (GLVR1) on human CD34(+) cells increases gene transfer mediated by GALV pseudotyped vectors. Mol Ther 2002; 6:400-6. [PMID: 12231177 DOI: 10.1006/mthe.2002.0678] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Retroviral transduction of CD34(+) cells on Retronectin using gibbon ape leukemia virus (GALV) pseudotyped vectors is inhibited by high concentrations of vector containing medium (VCM). Furthermore, this inhibitory activity is stable for at least 48 hours at 37 degrees C and partially blocks a second hit with a GALV pseudotyped vector. We hypothesized that this inhibition was due to interference at the receptor level between infectious and noninfectious vector particles and that it might be possible to overcome it by increasing receptor expression on target cells. Activation of protein kinase C in CD34(+) cells with the phorbol ester PMA (phorbol 12-myristate 13-acetate) increased the mRNA level of the GALV receptor (GLVR1) and the transduction efficiency (TE), and fully reversed the inhibition of transduction seen with high-titer GALV VCM. A murine stem cell virus (MSCV) vector with the GLVR1 receptor and green fluorescent protein cDNAs (MGLIG) was used to transduce fibroblasts, and clones expressing different levels of GLVR1 were isolated. The TE of these cells using a GALV vector correlated with the level of GLVR1 expression. When CD34(+) cells or K562 cells were first transduced with MGLIG and then with high-titer GALV VCM, no inhibition of transduction was seen. The low level of GLVR1 expression limits gene transfer to K562 and CD34(+) cells using GALV pseudotyped vectors, especially in the presence of high-titer VCMs.
Collapse
Affiliation(s)
- Thomas Relander
- Department of Molecular Medicine and Gene Therapy, University of Lund, Lund, Sweden
| | | | | | | | | |
Collapse
|
9
|
Hagenbeek D, Rock CD. Quantitative analysis by flow cytometry of abscisic acid-inducible gene expression in transiently transformed rice protoplasts. CYTOMETRY 2001; 45:170-9. [PMID: 11746085 DOI: 10.1002/1097-0320(20011101)45:3<170::aid-cyto1160>3.0.co;2-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Quantifying plant gene expression by flow cytometry (FCM) would allow multidimensional cell-parameter analysis on a per-cell basis, thereby providing insight into the cellular mechanisms of plant gene regulation. Here we sought to establish quantitation by FCM of plant hormone (abscisic acid, ABA)-inducible green fluorescent protein (GFP) expression and to compare the method directly with traditional reporter enzyme assays. MATERIALS AND METHODS GFP, beta-glucuronidase, and luciferase reporter genes driven by ABA-inducible or constitutive promoter constructs were expressed in transiently cotransformed rice protoplasts and reporter activities quantified by FCM (for GFP) or traditional enzyme assays. Treatments included cotransformations with specific ABA signaling effector cDNA constructs (encoding VIVIPAROUS-1, an ABA transcription factor, and ABA-INSENSITIVE1-1, a dominant-negative protein phosphatase regulator) and the ABA agonist lanthanum chloride. Dual-color FCM was also performed on GFP-expressing cells immunodecorated with an mAb recognizing a rice cell surface epitope. RESULTS Quantitative analysis of ABA-inducible gene expression by FCM using GFP as reporter gave comparable results to traditional reporter enzyme assays, although the signal-to-noise ratio was less for FCM, which can be a limitation of the method at low promoter strengths. Multiparameter-correlated analysis of ABA-inducible GFP expression with a plasma membrane marker showed no apparent correlation between ABA sensitivity, marked by GFP, and presence of a cell surface arabinogalactan glycoprotein. CONCLUSIONS Quantitative FCM of GFP-expressing plant cells is a rapid, robust, reproducible, and value-added method relative to traditional enzymatic reporter gene assays.
Collapse
Affiliation(s)
- D Hagenbeek
- Department of Biology, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
| | | |
Collapse
|
10
|
Hawley TS, Telford WG, Hawley RG. "Rainbow" reporters for multispectral marking and lineage analysis of hematopoietic stem cells. Stem Cells 2001; 19:118-24. [PMID: 11239166 DOI: 10.1634/stemcells.19-2-118] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hematologic diseases potentially benefiting from gene-based therapies involving hematopoietic stem cells (HSCs) include hereditary hemoglobinopathies, immunodeficiency syndromes, and congenital bleeding disorders such as hemophilia A, as well as acquired diseases like AIDS. Successful treatment of these blood diseases with gene-modified HSCs requires high efficiency gene delivery to the target cell population and persistence of transgene expression following differentiation. We review flow cytometric procedures that permit simultaneous, noninvasive measurements of transgene expression and phenotypic discrimination of hematopoietic cell subsets. Central to this approach has been the recent development of a spectrum of blue, cyan, and yellowish-green fluorescent reporters based on the jellyfish Aequorea victoria green fluorescent protein and the discovery of a red fluorescent protein in DISCOSOMA: coral. This methodology should facilitate the optimization of oncoretroviral and lentiviral vectorology and HSC transduction protocols for the ultimate purpose of HSC-directed gene therapy.
Collapse
Affiliation(s)
- T S Hawley
- Flow Cytometry Facility, Jerome H. Holland Laboratory for the Biomedical Sciences, American Red Cross, Rockville, Maryland 20855, USA.
| | | | | |
Collapse
|