1
|
Kim OH, Hong HE, Seo H, Kwak BJ, Choi HJ, Kim KH, Ahn J, Lee SC, Kim SJ. Generation of induced secretome from adipose-derived stem cells specialized for disease-specific treatment: An experimental mouse model. World J Stem Cells 2020; 12:70-86. [PMID: 32110276 PMCID: PMC7031761 DOI: 10.4252/wjsc.v12.i1.70] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 08/16/2019] [Accepted: 09/26/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Recently, the exclusive use of mesenchymal stem cell (MSC)-secreted molecules, named as the secretome, have been evaluated for overcoming the limitations of cell-based therapy while maintaining its advantages.
AIM To improve cell-free therapy by adding disease-specificity through stimulation of MSCs using disease-causing materials.
METHODS We collected the secretory materials (named as inducers) released from AML12 hepatocytes that had been pretreated with thioacetamide (TAA) and generated the TAA-induced secretome (TAA-isecretome) after stimulating adipose-derived stem cells with the inducers. The TAA-isecretome was intravenously administered to mice with TAA-induced hepatic failure and those with partial hepatectomy.
RESULTS TAA-isecretome infusion showed higher therapeutic potential in terms of (1) restoring disorganized hepatic tissue to normal tissue; (2) inhibiting proinflammatory cytokines (interleukin-6 and tumor necrosis factor-α); and (3) reducing abnormally elevated liver enzymes (aspartate aminotransferase and alanine aminotransferase) compared to the naïve secretome infusion in mice with TAA-induced hepatic failure. However, the TAA-isecretome showed inferior therapeutic potential for restoring hepatic function in partially hepatectomized mice. Proteomic analysis of TAA-isecretome identified that antioxidant processes were the most predominant enriched biological networks of the proteins exclusively identified in the TAA-isecretome. In addition, peroxiredoxin-1, a potent antioxidant protein, was found to be one of representative components of TAA-isecretome and played a central role in the protection of TAA-induced hepatic injury.
CONCLUSION Appropriate stimulation of adipose-derived stem cells with TAA led to the production of a secretome enriched with proteins, especially peroxiredoxin-1, with higher antioxidant activity. Our results suggest that appropriate stimulation of MSCs with pathogenic agents can lead to the production of a secretome specialized for protecting against the pathogen. This approach is expected to open a new way of developing various specific therapeutics based on the high plasticity and responsiveness of MSCs.
Collapse
Affiliation(s)
- Ok-Hee Kim
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Division of Hepato-biliary Pancreatic Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Ha-Eun Hong
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Division of Hepato-biliary Pancreatic Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Haeyeon Seo
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Division of Hepato-biliary Pancreatic Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Bong Jun Kwak
- Department of Surgery, Division of Hepato-biliary Pancreatic Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Ho Joong Choi
- Department of Surgery, Division of Hepato-biliary Pancreatic Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Kee-Hwan Kim
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, the Catholic University of Korea, Seoul 11765, South Korea
| | - Joseph Ahn
- Department of Surgery, Division of Hepato-biliary Pancreatic Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Sang Chul Lee
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 34943, South Korea
| | - Say-June Kim
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Division of Hepato-biliary Pancreatic Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| |
Collapse
|
2
|
Kim KH, Lee JI, Kim OH, Hong HE, Kwak BJ, Choi HJ, Ahn J, Lee TY, Lee SC, Kim SJ. Ameliorating liver fibrosis in an animal model using the secretome released from miR-122-transfected adipose-derived stem cells. World J Stem Cells 2019; 11:990-1004. [PMID: 31768225 PMCID: PMC6851007 DOI: 10.4252/wjsc.v11.i11.990] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 09/02/2019] [Accepted: 09/13/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Recently, the exclusive use of mesenchymal stem cell (MSC)-secreted molecules, called secretome, rather than cells, has been evaluated for overcoming the limitations of cell-based therapy, while maintaining its advantages. However, the use of naïve secretome may not fully satisfy the specificity of each disease. Therefore, it appears to be more advantageous to use the functionally reinforced secretome through a series of processes involving physico-chemical adjustments or genetic manipulation rather than to the use naïve secretome.
AIM To determine the therapeutic potential of the secretome released from miR-122-transfected adipose-derived stromal cells (ASCs).
METHODS We collected secretory materials released from ASCs that had been transfected with antifibrotic miR-122 (MCM) and compared their antifibrotic effects with those of the naïve secretome (CM). MCM and CM were intravenously administered to the mouse model of thioacetamide-induced liver fibrosis, and their therapeutic potentials were compared.
RESULTS MCM infusion provided higher therapeutic potential in terms of: (A) Reducing collagen content in the liver; (B) Inhibiting proinflammatory cytokines; and (C) Reducing abnormally elevated liver enzymes than the infusion of the naïve secretome. The proteomic analysis of MCM also indicated that the contents of antifibrotic proteins were significantly elevated compared to those in the naïve secretome.
CONCLUSION We could, thus, conclude that the secretome released from miR-122-transfected ASCs has higher antifibrotic and anti-inflammatory properties than the naïve secretome. Because miR-122 transfection into ASCs provides a specific way of potentiating the antifibrotic properties of ASC secretome, it could be considered as an enhanced method for reinforcing secretome effectiveness.
Collapse
Affiliation(s)
- Kee-Hwan Kim
- Department of Surgery, Uijeongbu St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 11765, South Korea
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Jae Im Lee
- Department of Surgery, Uijeongbu St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 11765, South Korea
| | - Ok-Hee Kim
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Ha-Eun Hong
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Bong Jun Kwak
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Ho Joong Choi
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Joseph Ahn
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Tae Yun Lee
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| | - Sang Chul Lee
- Department of Surgery, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 34943, South Korea
| | - Say-June Kim
- Catholic Central Laboratory of Surgery, Institute of Biomedical Industry, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
- Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul 06591, South Korea
| |
Collapse
|
3
|
Dental derived stem cell conditioned media for hair growth stimulation. PLoS One 2019; 14:e0216003. [PMID: 31042749 PMCID: PMC6493760 DOI: 10.1371/journal.pone.0216003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 04/11/2019] [Indexed: 12/20/2022] Open
Abstract
Alopecia is a clinical condition caused by excessive hair loss which may result in baldness, the causes of which still remain elusive. Conditioned media (CM) from stem cells shows promise in regenerative medicine. Our aim was to evaluate the potential CM of dental pulp stem cells obtained from human deciduous teeth (SHED-CM) to stimulate hair growth under in vitro and in vivo conditions. SHED and hair follicle stem cells (HFSCs) (n = 3) were cultured in media combinations; i) STK2, ii) DMEM-KO+10% FBS, iii) STK2+2% FBS and profiled for the presence of positive hair growth-regulatory paracrine factors; SDF-1, HGF, VEGF-A, PDGF-BB and negative hair growth-regulatory paracrine factors; IL-1α, IL-1β, TGF-β, bFGF, TNF-α, and BDNF. The potential of CM from both cell sources to stimulate hair growth was evaluated based on the paracrine profile and measured dynamics of hair growth under in vitro conditions. The administration of CM media to telogen-staged synchronized 7-week old C3H/HeN female mice was carried out to study the potential of the CM to stimulate hair growth in vivo. SHED and HFSCs cultured in STK2 based media showed a shorter population doubling time, higher viability and better maintenance of MSC characteristics in comparison to cells cultured in DMEM-KO media. STK2 based CM contained only two negative hair growth-regulatory factors; TNF-α, IL-1 while DMEM-KO CM contained all negative hair growth-regulatory factors. The in vitro study confirmed that treatment with STK2 based media CM from passage 3 SHED and HFSCs resulted in a significantly higher number of anagen-staged hair follicles (p<0.05) and a significantly lower number of telogen-staged hair follicles (p<0.05). Administration of SHED-CM to C3H/HeN mice resulted in a significantly faster stimulation of hair growth in comparison to HFSC-CM (p<0.05), while the duration taken for complete hair coverage was similar for both CM sources. Thus, SHED-CM carries the potential to stimulate hair growth which can be used as a treatment tool for alopecia.
Collapse
|
4
|
Esquiva G, Grayston A, Rosell A. Revascularization and endothelial progenitor cells in stroke. Am J Physiol Cell Physiol 2018; 315:C664-C674. [PMID: 30133323 DOI: 10.1152/ajpcell.00200.2018] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Stroke is one of the leading causes of death and disability worldwide. Tremendous improvements have been achieved in the acute care of stroke patients with the implementation of stroke units, thrombolytic drugs, and endovascular trombectomies. However, stroke survivors with neurological deficits require long periods of neurorehabilitation, which is the only approved therapy for poststroke recovery. With this scenario, more treatments are urgently needed, and only the understanding of the mechanisms of brain recovery might contribute to identify new therapeutic agents. Fortunately, brain injury after stroke is counteracted by the birth and migration of several populations of progenitor cells towards the injured areas, where angiogenesis and vascular remodeling play a key role providing trophic support and guidance during neurorepair. Endothelial progenitor cells (EPCs) constitute a pool of circulating bone-marrow derived cells that mobilize after an ischemic injury with the potential to incorporate into the damaged endothelium, to form new vessels, or to secrete trophic factors stimulating vessel remodeling. The circulating levels of EPCs are altered after stroke, and several subpopulations have proved to boost brain neurorepair in preclinical models of cerebral ischemia. The goal of this review is to discuss the current state of the neuroreparative actions of EPCs, focusing on their paracrine signaling mechanisms thorough their secretome and released extracellular vesicles.
Collapse
Affiliation(s)
- Gema Esquiva
- Neurovascular Research Laboratory and Neurology Department, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Alba Grayston
- Neurovascular Research Laboratory and Neurology Department, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona , Barcelona , Spain
| | - Anna Rosell
- Neurovascular Research Laboratory and Neurology Department, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona , Barcelona , Spain
| |
Collapse
|
5
|
Lee SC, Jeong HJ, Lee SK, Kim SJ. Lipopolysaccharide preconditioning of adipose-derived stem cells improves liver-regenerating activity of the secretome. Stem Cell Res Ther 2015; 6:75. [PMID: 25890074 PMCID: PMC4416308 DOI: 10.1186/s13287-015-0072-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 03/26/2015] [Accepted: 03/31/2015] [Indexed: 02/07/2023] Open
Abstract
Introduction Growing recognition of paracrine mechanisms in stem cell plasticity has resulted in considerable interest in stem cell-derived secretome. The aim of this study was to investigate the effects of lipopolysaccharide (LPS) preconditioning on the composition and hepatic regenerative activity of adipose-derived stem cell (ASC) secretome. Methods Conditioned medium (CM) and LPS-CM were obtained after culturing human ASCs without or with low-dose LPS (0.5 ng/mL) for 24 hours. Untreated and thioacetamide-treated mouse AML12 hepatocytes were incubated for 24 hours with the control medium, LPS (0.5 ng/mL), CM, and LPS-CM and then cell viabilities were compared. CM and LPS-CM were also intravenously administered to partially hepatectomized mice, and their effects on liver regeneration were assessed by using liver weight measurements, immunohistochemistry, and Western blotting. Results In the in vitro experiments, LPS preconditioning of ASCs enhanced the mRNA expression levels of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), hepatocyte growth factor, and vascular endothelial growth factor, which evoke inflammatory response or liver regeneration. LPS-CM significantly promoted thioacetamide-damaged AML12 cell viability compared with CM-incubated cells and the control cells (77%, 69%, and 65% P <0.05). In the in vivo experiment, LPS-CM infusion into the partially hepatectomized mice significantly reduced serum IL-6 and TNF-α levels compared with the other groups (P <0.05) on days 1 and 2 after partial hepatectomy. Moreover, LPS-CM infusion enhanced liver regeneration (based on the liver weight changes at day 7 after partial hepatectomy, 3.73% versus 3.22% in the CM group; P <0.05) and significantly reduced the elevated serum levels of aspartate transaminase and alanine transaminase (at day 1, P <0.05). Conclusions Our results suggest that LPS preconditioning effectively stimulates ASCs to produce the secretome beneficial to hepatic regeneration. Thus, optimizing ASC secretome profile by LPS preconditioning could be a promising approach to treat liver diseases by using stem cells.
Collapse
Affiliation(s)
- Sang Chul Lee
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daeheung-dong 520-2, Joong-gu, Daejeon, Republic of Korea.
| | - Hye Jin Jeong
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daeheung-dong 520-2, Joong-gu, Daejeon, Republic of Korea.
| | - Sang Kuon Lee
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daeheung-dong 520-2, Joong-gu, Daejeon, Republic of Korea.
| | - Say-June Kim
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daeheung-dong 520-2, Joong-gu, Daejeon, Republic of Korea.
| |
Collapse
|
6
|
Radrizzani M, Lo Cicero V, Soncin S, Bolis S, Sürder D, Torre T, Siclari F, Moccetti T, Vassalli G, Turchetto L. Bone marrow-derived cells for cardiovascular cell therapy: an optimized GMP method based on low-density gradient improves cell purity and function. J Transl Med 2014; 12:276. [PMID: 25260977 PMCID: PMC4189603 DOI: 10.1186/s12967-014-0276-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/22/2014] [Indexed: 01/08/2023] Open
Abstract
Background Cardiovascular cell therapy represents a promising field, with several approaches currently being tested. The advanced therapy medicinal product (ATMP) for the ongoing METHOD clinical study (“Bone marrow derived cell therapy in the stable phase of chronic ischemic heart disease”) consists of fresh mononuclear cells (MNC) isolated from autologous bone marrow (BM) through density gradient centrifugation on standard Ficoll-Paque. Cells are tested for safety (sterility, endotoxin), identity/potency (cell count, CD45/CD34/CD133, viability) and purity (contaminant granulocytes and platelets). The aims of the present work were (1) to optimize the cell manufacturing process in order to reduce contaminants and (2) to implement additional assays in order to improve product characterization and evaluate product stability. Methods BM-MNC were isolated by density gradient centrifugation on Ficoll-Paque. The following process parameters were optimized throughout the study: gradient medium density; gradient centrifugation speed and duration; washing conditions. Differential cell count was performed by an automated hematology cell analyzer. Immunophenotype and cell viability were determined by flow cytometry. Functional hematopoietic and mesenchymal precursors and cells with angiogenic potential were assessed by colony-forming assays, cell invasion capacity by a fluorimetric assay. Sterility was tested using an automated microbial detection system, endotoxin by a kinetic chromogenic Limulus amebocyte lysate test. T-test was used for statistical analysis. Results A new manufacturing method was set up, based on gradient centrifugation on low density Ficoll-Paque, followed by 2 washing steps, of which the second one at low speed. It led to significantly higher removal of contaminant granulocytes and platelets, improving product purity; the frequencies of CD34+ cells, CD133+ cells and functional hematopoietic and mesenchymal precursors were significantly increased. The process was successfully validated according to Good Manufacturing Practices. The resulting ATMP mainly consisted of viable MNC including CD34+ and CD133+ cell subsets (2.98% ± 1.90% and 0.83% ± 1.32%, respectively), CD184/CXCR4+ cells (34% ± 15%), CD34+/CD133+/CD309+ endothelial precursors (44 ± 21 in 106 total cells), cells with invasion capacity, functional hematopoietic and mesenchymal precursors, cells with angiogenic potential; it was stable for 20 hours at 10°C. Conclusions The methodological optimization described here resulted in a significant improvement of ATMP quality, a crucial issue to clinical applications in cardiovascular cell therapy.
Collapse
|
7
|
Rosell A, Morancho A, Navarro-Sobrino M, Martínez-Saez E, Hernández-Guillamon M, Lope-Piedrafita S, Barceló V, Borrás F, Penalba A, García-Bonilla L, Montaner J. Factors secreted by endothelial progenitor cells enhance neurorepair responses after cerebral ischemia in mice. PLoS One 2013; 8:e73244. [PMID: 24023842 PMCID: PMC3762828 DOI: 10.1371/journal.pone.0073244] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 07/18/2013] [Indexed: 02/07/2023] Open
Abstract
Cell therapy with endothelial progenitor cells (EPCs) has emerged as a promising strategy to regenerate the brain after stroke. Here, we aimed to investigate if treatment with EPCs or their secreted factors could potentiate angiogenesis and neurogenesis after permanent focal cerebral ischemia in a mouse model of ischemic stroke. BALB/C male mice were subjected to distal occlusion of the middle cerebral artery, and EPCs, cell-free conditioned media (CM) obtained from EPCs, or vehicle media were administered one day after ischemia. Magnetic resonance imaging (MRI) was performed at baseline to confirm that the lesions were similar between groups. Immunohistochemical and histological evaluation of the brain was performed to evaluate angio-neurogenesis and neurological outcome at two weeks. CM contained growth factors, such as VEGF, FGF-b and PDGF-bb. A significant increase in capillary density was noted in the peri-infarct areas of EPC- and CM-treated animals. Bielschowsky's staining revealed a significant increase in axonal rewiring in EPC-treated animals compared with shams, but not in CM-treated mice, in close proximity with DCX-positive migrating neuroblasts. At the functional level, post-ischemia forelimb strength was significantly improved in animals receiving EPCs or CM, but not in those receiving vehicle media. In conclusion, we demonstrate for the first time that the administration of EPC-secreted factors could become a safe and effective cell-free option to be considered in future therapeutic strategies for stroke.
Collapse
Affiliation(s)
- Anna Rosell
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
- * E-mail:
| | - Anna Morancho
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
| | - Miriam Navarro-Sobrino
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
| | - Elena Martínez-Saez
- Neuropathology Unit, Department of Pathology, Hospital Vall d’Hebron, Barcelona, Catalonia, Spain
| | - Mar Hernández-Guillamon
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
| | - Silvia Lope-Piedrafita
- Servei RMN, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Catalonia, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Cerdanyola del Vallès, Catalonia, Spain
| | - Verónica Barceló
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
| | - Francesc Borrás
- Neuropathology Unit, Department of Pathology, Hospital Vall d’Hebron, Barcelona, Catalonia, Spain
| | - Anna Penalba
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
| | - Lidia García-Bonilla
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
| | - Joan Montaner
- Neurovascular Research Laboratory, Department of Neurology and Department of Internal Medicine, Universitat Autònoma de Barcelona, Vall d’Hebron Research Institute, Barcelona, Catalonia, Spain
| |
Collapse
|
8
|
Lima LCF, Porto ML, Campagnaro BP, Tonini CL, Nogueira BV, Pereira TM, Vasquez EC, Meyrelles SS. Mononuclear cell therapy reverts cuff-induced thrombosis in apolipoprotein E-deficient mice. Lipids Health Dis 2012; 11:96. [PMID: 22849299 PMCID: PMC3477089 DOI: 10.1186/1476-511x-11-96] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Accepted: 07/12/2012] [Indexed: 01/06/2023] Open
Abstract
Background Stem/progenitor cell-based therapy has successfully been used as a novel therapeutic strategy for vascular diseases triggered by endothelial dysfunction. The aim of this study was to investigate the effects of mononuclear cell (MNC) therapy in situ on carotid cuff-induced occlusive thrombus in the apolipoprotein E knockout (apoE-/-) mouse. Methods Spleen-derived MNCs were isolated from green fluorescent protein (GFP)-transgenic mice for cell treatment. A cuff-induced thrombus model was produced by placing a nonconstrictive silastic collar around the left common carotid artery in 20-week-old female apoE-/- mice. After 10 days, the cuff was removed, and the animals received in situ MNCs (Cuff-MNC) or vehicle (Cuff-Vehicle) and were compared with sham-operated animals (Sham). Results The histological analysis showed that the MNC treatment reverted occlusive thrombus formation compared to the vehicle and the vessel lumen area to that observed in the Sham group (MNC, 50 ± 4; Vehicle, 20 ± 4; Sham, 55 ± 2 x103 μm2; p < 0.01). The animals that underwent the carotid cuff placement developed compensatory vessel enlargement, which was reduced by the MNC therapy. In addition, the treatment was able to reduce superoxide anion production, which likely contributed to the reduced apoptosis that was observed. Lastly, the immunofluorescence analysis revealed the presence of endothelial progenitor cells (EPCs) in the carotid endothelia of the apoE-/- mice. Conclusion In situ short-term MNC therapy was able to revert cuff-induced occlusive thrombi in the carotid arteries of apoE-/- mice, possibly through the homing of EPCs, reduction of oxidative stress and decreased apoptosis.
Collapse
Affiliation(s)
- Leandro C F Lima
- Laboratory of Transgenes and Cardiovascular Control, Department Physiological Sciences, Health Sciences Center, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Ziebart T, Schnell A, Walter C, Kämmerer PW, Pabst A, Lehmann KM, Ziebart J, Klein MO, Al-Nawas B. Interactions between endothelial progenitor cells (EPC) and titanium implant surfaces. Clin Oral Investig 2012; 17:301-9. [PMID: 22406922 DOI: 10.1007/s00784-012-0691-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Accepted: 02/09/2012] [Indexed: 01/02/2023]
Abstract
OBJECTIVES Endothelial cells play an important role in peri-implant angiogenesis during early bone formation. Therefore, interactions between endothelial progenitor cells (EPCs) and titanium dental implant surfaces are of crucial interest. The aim of our in vitro study was to investigate the reactions of EPCs in contact with different commercially available implant surfaces. MATERIALS AND METHODS EPCs from buffy coats were isolated by Ficoll density gradient separation. After cell differentiation, EPC were cultured for a period of 7 days on different titanium surfaces. The test surfaces varied in roughness and hydrophilicity: acid-etched (A), sand-blasted-blasted and acid-etched (SLA), hydrophilic A (modA), and hydrophilic SLA (modSLA). Plastic and fibronectin-coated plastic surfaces served as controls. Cell numbers and morphology were analyzed by confocal laser scanning microscopy. Secretion of vascular endothelial growth factor (VEGF)-A was measured by enzyme-linked immunosorbent assay and expressions of iNOS and eNOS were investigated by real-time polymerase chain reaction. RESULTS Cell numbers were higher in the control groups compared to the cells of titanium surfaces. Initially, hydrophilic titanium surfaces (modA and modSLA) showed lower cell numbers than hydrophobic surfaces (A and SLA). After 7 days smoother surfaces (A and modA) showed increased cell numbers compared to rougher surfaces (SLA and modSLA). Cell morphology of A, modA, and control surfaces was characterized by a multitude of pseudopodia and planar cell soma architecture. SLA and modSLA promoted small and plump cell soma with little quantity of pseudopodia. The lowest VEGF level was measured on A, the highest on modSLA. The highest eNOS and iNOS expressions were found on modA surfaces. CONCLUSIONS The results of this study demonstrate that biological behaviors of EPCs can be influenced by different surfaces. The modSLA surface promotes an undifferentiated phenotype of EPCs that has the ability to secrete growth factors in great quantities. CLINICAL RELEVANCE In correlation with recent clinical studies these results underline the hypothesis that EPC could promote and increase neovascularization by secreting paracrine factors which support osseointegration of dental implants.
Collapse
Affiliation(s)
- Thomas Ziebart
- Department of Oral and Maxillofacial Surgery, University medical centre of Johannes Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany.
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Porto ML, Lima LCF, Pereira TMC, Nogueira BV, Tonini CL, Campagnaro BP, Meyrelles SS, Vasquez EC. Mononuclear cell therapy attenuates atherosclerosis in apoE KO mice. Lipids Health Dis 2011; 10:155. [PMID: 21896159 PMCID: PMC3179743 DOI: 10.1186/1476-511x-10-155] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 09/06/2011] [Indexed: 11/17/2022] Open
Abstract
Background Recent studies have highlighted the potential of cell therapy for atherosclerosis. The aim of this study was to evaluate the effects of mononuclear cell (MNC) therapy on the development of atherosclerotic lesions in the apolipoprotein E knockout (apoE KO) mouse. Methods We investigated vascular lipid deposition, vascular remodeling, oxidative stress, and endothelial nitric oxide synthase (eNOS) expression in apoE KO mice treated with spleen MNCs isolated from lacZ transgenic mice (apoE KO-MNC) for 8 weeks compared to untreated control mice (apoE KO). Results Histological analysis of aortas showed a significant reduction in the lipid deposition area in apoE KO-MNC mice compared to apoE KO mice (0.051 ± 0.004 vs 0.117 ± 0.016 mm2, respectively, p < 0.01). In addition, vessel morphometry revealed that MNC therapy prevented the outward (positive) remodeling in apoE KO mice that is normally observed (apoE KO-MNC: 0.98 ± 0.07 vs apoE KO: 1.37 ± 0.09), using wild-type mice (C57BL/6J) as a reference. ApoE KO-MNC mice also have reduced production of superoxide anions and increased eNOS expression compared to apoE KO mice. Finally, immunohistochemistry analysis revealed a homing of endothelial progenitor cells (EPCs) in the aortas of apoE KO-MNC mice. Conclusion MNC therapy attenuates the progression of atherosclerosis in the aortas of apoE KO mice. Our data provide evidence that the mechanism by which this attenuation occurs includes the homing of EPCs, a decrease in oxidative stress and an upregulation of eNOS expression.
Collapse
Affiliation(s)
- Marcella L Porto
- Laboratory of Transgenes and Cardiovascular Control, Dept Physiological Sciences, Health Sciences Center, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Trounson A, Thakar RG, Lomax G, Gibbons D. Clinical trials for stem cell therapies. BMC Med 2011; 9:52. [PMID: 21569277 PMCID: PMC3098796 DOI: 10.1186/1741-7015-9-52] [Citation(s) in RCA: 290] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 05/10/2011] [Indexed: 12/16/2022] Open
Abstract
In recent years, clinical trials with stem cells have taken the emerging field in many new directions. While numerous teams continue to refine and expand the role of bone marrow and cord blood stem cells for their vanguard uses in blood and immune disorders, many others are looking to expand the uses of the various types of stem cells found in bone marrow and cord blood, in particular mesenchymal stem cells, to uses beyond those that could be corrected by replacing cells in their own lineage. Early results from these trials have produced mixed results often showing minor or transitory improvements that may be attributed to extracellular factors. More research teams are accelerating the use of other types of adult stem cells, in particular neural stem cells for diseases where beneficial outcome could result from either in-lineage cell replacement or extracellular factors. At the same time, the first three trials using cells derived from pluripotent cells have begun.
Collapse
Affiliation(s)
- Alan Trounson
- California Institute for Regenerative Medicine, 210 King Street, San Francisco, CA 9107, USA.
| | | | | | | |
Collapse
|