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Zavatti M, Gatti M, Beretti F, Palumbo C, Maraldi T. Exosomes Derived from Human Amniotic Fluid Mesenchymal Stem Cells Preserve Microglia and Neuron Cells from Aβ. Int J Mol Sci 2022; 23:ijms23094967. [PMID: 35563358 PMCID: PMC9105787 DOI: 10.3390/ijms23094967] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Neuroinflammation is involved in neuronal cell death that occurs in neurodegenerative diseases such as Alzheimer's disease (AD). Microglia play important roles in regulating the brain amyloid beta (Aβ) levels, so immunomodulatory properties exerted by mesenchymal stem cells may be exploited to treat this pathology. The evidence suggests that the mechanism of action of human amniotic fluid stem cells (hAFSCs) is through their secretome, which includes exosomes (exo). METHODS We examined the effect of exosomes derived from human amniotic fluid stem cells (hAFSCs-exo) on activated BV-2 microglia cells by lipopolysaccharide (LPS) as a neuroinflammation model. To investigate the exo effect on the interplay between AD neurons and microglia, SH-SY5Y neuroblastoma cells treated with Aβ were exposed to a conditioned medium (CM) obtained from activated BV-2 or co-culture systems. RESULTS We found that the upregulation of the markers of pro-inflammatory microglia was prevented when exposed to hAFSC-exo whereas the markers of the anti-inflammatory macrophage phenotype were not affected. Interestingly, the hAFSC-exo pretreatment significantly inhibited the oxidative stress rise and apoptosis occurring in the neurons in presence of both microglia and Aβ. CONCLUSION We demonstrated that hAFSC-exo mitigated an inflammatory injury caused by microglia and significantly recovered the neurotoxicity, suggesting that hAFSC-exo may be a potential therapeutic agent for inflammation-related neurological conditions, including AD.
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ROS Promote Hypoxia-Induced Keratinocyte Epithelial-Mesenchymal Transition by Inducing SOX2 Expression and Subsequent Activation of Wnt/ β-Catenin. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1084006. [PMID: 35035654 PMCID: PMC8758332 DOI: 10.1155/2022/1084006] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/21/2021] [Accepted: 11/03/2021] [Indexed: 12/12/2022]
Abstract
We previously showed that wound-induced hypoxia is related to keratinocyte migration. The ability of keratinocytes within wound healing to undergo epithelial to mesenchymal transition (EMT) contributes significantly to the acquisition of migratory properties. However, the effect of hypoxia on keratinocyte EMT on wound healing and the potential mechanism are poorly documented. This study first demonstrated that reactive oxygen species (ROS) appear to be an essential signalling mediator in keratinocytes with increased EMT and migration subjected to hypoxic conditions. Next, we showed that the expression of sex-determining region Y-box 2 (SOX2), a stemness-associated molecule, is ROS-dependent under hypoxia and that SOX2 inhibition in keratinocytes dramatically prevented hypoxia-induced EMT and migration. In addition, β-catenin was found to be a potential molecular target of SOX2, and the activation of Wnt/β-catenin was required for hypoxia-induced EMT and migration. Using an in vitro skin culture model and an in vivo skin wound model, our study further reinforced the critical role of ROS in inducing EMT through SOX2 expression and subsequent activation of Wnt/β-catenin, allowing for rapid reepithelialization of the wound area. Taken together, our findings reveal a previously unknown mechanism by which hypoxia promotes wound healing by promoting reepithelialization through the production of ROS, inducing keratinocyte EMT and migration via the enhancement of SOX2 and activation of Wnt/β-catenin.
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Hitchler MJ, Domann FE. The epigenetic and morphogenetic effects of molecular oxygen and its derived reactive species in development. Free Radic Biol Med 2021; 170:70-84. [PMID: 33450377 PMCID: PMC8217084 DOI: 10.1016/j.freeradbiomed.2021.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 12/11/2022]
Abstract
The development of multicellular organisms involves the unpacking of a complex genetic program. Extensive characterization of discrete developmental steps has revealed the genetic program is controlled by an epigenetic state. Shifting the epigenome is a group of epigenetic enzymes that modify DNA and proteins to regulate cell type specific gene expression. While the role of these modifications in development has been established, the input(s) responsible for electing changes in the epigenetic state remains unknown. Development is also associated with dynamic changes in cellular metabolism, redox, free radical production, and oxygen availability. It has previously been postulated that these changes are causal in development by affecting gene expression. This suggests that oxygen is a morphogenic compound that impacts the removal of epigenetic marks. Likewise, metabolism and reactive oxygen species influence redox signaling through iron and glutathione to limit the availability of key epigenetic cofactors such as α-ketoglutarate, ascorbate, NAD+ and S-adenosylmethionine. Given the close relationship between these cofactors and epigenetic marks it seems likely that the two are linked. Here we describe how changing these inputs might affect the epigenetic state during development to drive gene expression. Combined, these cofactors and reactive oxygen species constitute the epigenetic landscape guiding cells along differing developmental paths.
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Affiliation(s)
- Michael J Hitchler
- Department of Radiation Oncology, Kaiser Permanente Los Angeles Medical Center, 4950 Sunset Blvd, Los Angeles, CA, 90027, USA.
| | - Frederick E Domann
- Department of Radiation Oncology, Free Radical and Radiation Biology Program, University of Iowa, Iowa City, IA, 52242, USA.
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Casciaro F, Zia S, Forcato M, Zavatti M, Beretti F, Bertucci E, Zattoni A, Reschiglian P, Alviano F, Bonsi L, Follo MY, Demaria M, Roda B, Maraldi T. Unravelling Heterogeneity of Amplified Human Amniotic Fluid Stem Cells Sub-Populations. Cells 2021; 10:cells10010158. [PMID: 33467440 PMCID: PMC7830644 DOI: 10.3390/cells10010158] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 01/10/2023] Open
Abstract
Human amniotic fluid stem cells (hAFSCs) are broadly multipotent immature progenitor cells with high self-renewal and no tumorigenic properties. These cells, even amplified, present very variable morphology, density, intracellular composition and stemness potential, and this heterogeneity can hinder their characterization and potential use in regenerative medicine. Celector® (Stem Sel ltd.) is a new technology that exploits the Non-Equilibrium Earth Gravity Assisted Field Flow Fractionation principles to characterize and label-free sort stem cells based on their solely physical characteristics without any manipulation. Viable cells are collected and used for further studies or direct applications. In order to understand the intrapopulation heterogeneity, various fractions of hAFSCs were isolated using the Celector® profile and live imaging feature. The gene expression profile of each fraction was analysed using whole-transcriptome sequencing (RNAseq). Gene Set Enrichment Analysis identified significant differential expression in pathways related to Stemness, DNA repair, E2F targets, G2M checkpoint, hypoxia, EM transition, mTORC1 signalling, Unfold Protein Response and p53 signalling. These differences were validated by RT-PCR, immunofluorescence and differentiation assays. Interestingly, the different fractions showed distinct and unique stemness properties. These results suggest the existence of deep intra-population differences that can influence the stemness profile of hAFSCs. This study represents a proof-of-concept of the importance of selecting certain cellular fractions with the highest potential to use in regenerative medicine.
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Affiliation(s)
- Francesca Casciaro
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41124 Modena, Italy; (F.C.); (M.Z.); (F.B.); (T.M.)
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40125 Bologna, Italy;
- European Research Institute for the Biology of Ageing (ERIBA), University Medical Center Groningen (UMCG), University of Groningen, 9713 Groningen, The Netherlands;
| | | | - Mattia Forcato
- Department of Life Sciences, University of Modena and Reggio Emilia, 41124 Modena, Italy;
| | - Manuela Zavatti
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41124 Modena, Italy; (F.C.); (M.Z.); (F.B.); (T.M.)
| | - Francesca Beretti
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41124 Modena, Italy; (F.C.); (M.Z.); (F.B.); (T.M.)
| | - Emma Bertucci
- Department of Medical and Surgical Sciences for Mothers, Children and Adults, University of Modena and Reggio Emilia, Azienda Ospedaliero Universitaria Policlinico, 41124 Modena, Italy;
| | - Andrea Zattoni
- Department of Chemistry “G. Ciamician”, University of Bologna, 40125 Bologna, Italy; (A.Z.); (P.R.)
| | - Pierluigi Reschiglian
- Department of Chemistry “G. Ciamician”, University of Bologna, 40125 Bologna, Italy; (A.Z.); (P.R.)
| | - Francesco Alviano
- Unit of Histology, Embryology and Applied Biology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, 40125 Bologna, Italy; (F.A.); (L.B.)
| | - Laura Bonsi
- Unit of Histology, Embryology and Applied Biology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, 40125 Bologna, Italy; (F.A.); (L.B.)
| | - Matilde Yung Follo
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, 40125 Bologna, Italy;
| | - Marco Demaria
- European Research Institute for the Biology of Ageing (ERIBA), University Medical Center Groningen (UMCG), University of Groningen, 9713 Groningen, The Netherlands;
| | - Barbara Roda
- Department of Chemistry “G. Ciamician”, University of Bologna, 40125 Bologna, Italy; (A.Z.); (P.R.)
- Correspondence: ; Tel.: +39-051-209-9450
| | - Tullia Maraldi
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, 41124 Modena, Italy; (F.C.); (M.Z.); (F.B.); (T.M.)
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The Interplay between HGF/c-met Axis and Nox4 in BRAF Mutated Melanoma. Int J Mol Sci 2021; 22:ijms22020761. [PMID: 33451139 PMCID: PMC7828605 DOI: 10.3390/ijms22020761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 01/22/2023] Open
Abstract
Background: Melanoma is the leading cause of death due to cutaneous malignancy and its incidence is on the rise. Several signaling pathways, including receptor tyrosine kinases, have a role in the development and progression of melanocytic lesions and malignant melanoma. Among those, the hepatocyte growth factor (HGF)/c-met axis is emerging as a critical player because it can play a role in drug resistance. Indeed, 50% of melanoma patients present BRAF mutations, however, all responders develop resistance to the inhibitors typically within one year of treatment. Interestingly, BRAF inhibitors induce reactive oxygen species (ROS) in melanoma cells, therefore, the aim of this study was to investigate a possible interplay between HGF/c-met and ROS sources, such as NADPH oxidases (Nox). Methods: The expression of c-met and Nox were quantified in 60 patients with primary cutaneous melanoma. In vitro experiments on melanoma primary cells and the cell line were performed to dissect the underpinned molecular mechanism. Results: The outcome of interest was the correlation between the high positivity for both Nox4 and c-met and metastasis occurring at least 1 year later than melanoma diagnosis in BRAF mutated patients, in contrast to nonmutated. In vitro experiments demonstrated that the axis HGF/c-met/Nox4/ROS triggers the epithelial-mesenchymal transition. Conclusions: The observed correlation suggests an interplay between c-met and Nox4 in promoting the onset of metastasis. This study suggests that Nox4 inhibitors could be associated to the current therapy used to treat melanoma patients with BRAF mutations.
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Casciaro F, Beretti F, Zavatti M, McCubrey JA, Ratti S, Marmiroli S, Follo MY, Maraldi T. Nuclear Nox4 interaction with prelamin A is associated with nuclear redox control of stem cell aging. Aging (Albany NY) 2019; 10:2911-2934. [PMID: 30362963 PMCID: PMC6224265 DOI: 10.18632/aging.101599] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 10/13/2018] [Indexed: 02/07/2023]
Abstract
Mesenchymal stem cells have emerged as an important tool that can be used for tissue regeneration thanks to their easy preparation, differentiation potential and immunomodulatory activity. However, an extensive culture of stem cells in vitro prior to clinical use can lead to oxidative stress that can modulate different stem cells properties, such as self-renewal, proliferation, differentiation and senescence. The aim of this study was to investigate the aging process occurring during in vitro expansion of stem cells, obtained from amniotic fluids (AFSC) at similar gestational age. The analysis of 21 AFSC samples allowed to classify them in groups with different levels of stemness properties. In summary, the expression of pluripotency genes and the proliferation rate were inversely correlated with the content of reactive oxygen species (ROS), DNA damage signs and the onset premature aging markers, including accumulation of prelamin A, the lamin A immature form. Interestingly, a specific source of ROS, the NADPH oxidase isoform 4 (Nox4), can localize into PML nuclear bodies (PML-NB), where it associates to prelamin A. Besides, Nox4 post translational modification, involved in PML-NB localization, is linked to its degradation pathway, as it is also for prelamin A, thus possibly modulating the premature aging phenotype occurrence.
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Affiliation(s)
- Francesca Casciaro
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, 41124, Italy.,Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40126, Italy
| | - Francesca Beretti
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, 41124, Italy
| | - Manuela Zavatti
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, 41124, Italy
| | - James A McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine at East Carolina University, Greenville, NC 27858, USA
| | - Stefano Ratti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40126, Italy
| | - Sandra Marmiroli
- Cellular Signaling Unit, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, 41125, Italy
| | - Matilde Y Follo
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, 40126, Italy
| | - Tullia Maraldi
- Department of Surgical, Medical, Dental and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, 41124, Italy
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Nugud A, Sandeep D, El-Serafi AT. Two faces of the coin: Minireview for dissecting the role of reactive oxygen species in stem cell potency and lineage commitment. J Adv Res 2018; 14:73-79. [PMID: 30023134 PMCID: PMC6047483 DOI: 10.1016/j.jare.2018.05.012] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 12/29/2022] Open
Abstract
Reactive oxygen species (ROS) are produced as by-products of several intracellular metabolic pathways and are reduced to more stable molecules by several protective pathways. The presence of high levels of ROS can be associated with disturbance of cell function and could lead to apoptosis. The presence of ROS within the physiological range has many effects on several signalling pathways. In stem cells, this role can range between keeping the potency of the naive stem cells to differentiation towards a certain lineage. In addition, the level of certain ROS would change according to the differentiation stage. For example, the presence of ROS can be associated with increasing the proliferation of mesenchymal stem cells, decreasing the potency of embryonic stem cells and adding to the genomic stability of induced pluripotent stem cells. ROS can enhance the differentiation of stem cells into cardiomyocytes, adipocytes, endothelial cells, keratinocytes and neurons. In the meantime, ROS inhibits osteogenesis and enhances the differentiation of cartilage to the hypertrophic stage, which is associated with chondrocyte death. Thus, ROS may form a link between naïve stem cells in the body and the environment. In addition, monitoring of ROS levels in vitro may help in tissue regeneration studies.
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Affiliation(s)
- Ahmed Nugud
- Sharjah Institute for Medical and Health Research, University of Sharjah, United Arab Emirates
| | - Divyasree Sandeep
- Sharjah Institute for Medical and Health Research, University of Sharjah, United Arab Emirates
| | - Ahmed T. El-Serafi
- Sharjah Institute for Medical and Health Research, University of Sharjah, United Arab Emirates
- Faculty of Medicine, Suez Canal University, Egypt
- Department of Clinical and Experimental Medicine, Linköping University, Sweden
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Beretti F, Zavatti M, Casciaro F, Comitini G, Franchi F, Barbieri V, La Sala GB, Maraldi T. Amniotic fluid stem cell exosomes: Therapeutic perspective. Biofactors 2018; 44:158-167. [PMID: 29341292 DOI: 10.1002/biof.1407] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 11/16/2017] [Accepted: 12/04/2017] [Indexed: 12/11/2022]
Abstract
It is widely accepted that the therapeutic potential of stem cells can be largely mediated by paracrine factors, also included into exosomes. Thus, stem cell-derived exosomes represent a major therapeutic option in regenerative medicine avoiding, if compared to stem cells graft, abnormal differentiation and tumor formation. Exosomes derived from mesenchymal stem cells (MSC) induce damaged tissue repair, and can also exert immunomodulatory effects on the differentiation, activation and function of different lymphocytes. Therefore, MSC exosomes can be considered as a potential treatment for inflammatory diseases and also an ideal candidate for allogeneic therapy due to their low immunogenicity. Amniotic fluid stem cells (AFSCs) are broadly multipotent, can be expanded in culture, and can be easily cryopreserved in cellular banks. In this study, morphology, phenotype, and protein content of exosomes released into amniotic fluid in vivo and from AFSC during in vitro culture (conditioned medium) were examined. We found that AFSC-derived exosomes present different molecules than amniotic fluid ones, some of them involved in immunomodulation, such transforming growth factor beta and hepatic growth factors. The immunomodulatory effect of AFSC's exosomes on peripheral blood mononuclear cells stimulated with phytohemagglutinin was compared to that of the supernatant produced by such conditioned media deprived of exosomes. We present evidence that the principal effect of AFSC conditioned media (without exosomes) is the induction of apoptosis in lymphocytes, whereas exposure to AFSC-derived exosomes decreases the lymphocyte's proliferation, supporting the hypothesis that the entire secretome of stem cells differently affects immune-response. © 2017 BioFactors, 44(2):158-167, 2018.
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Affiliation(s)
- Francesca Beretti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Manuela Zavatti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Francesca Casciaro
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giuseppina Comitini
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Fabrizia Franchi
- Genetic Laboratory, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Veronica Barbieri
- Genetic Laboratory, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Giovanni B La Sala
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Tullia Maraldi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
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Moloney JN, Jayavelu AK, Stanicka J, Roche SL, O'Brien RL, Scholl S, Böhmer FD, Cotter TG. Nuclear membrane-localised NOX4D generates pro-survival ROS in FLT3-ITD-expressing AML. Oncotarget 2017; 8:105440-105457. [PMID: 29285262 PMCID: PMC5739649 DOI: 10.18632/oncotarget.22241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 10/02/2017] [Indexed: 12/21/2022] Open
Abstract
Internal tandem duplication of the juxtamembrane domain of FMS-like tyrosine kinase 3 (FLT3-ITD) is the most prevalent genetic aberration present in 20-30% of acute myeloid leukaemia (AML) cases and is associated with a poor prognosis. FLT3-ITD expressing cells express elevated levels of NADPH oxidase 4 (NOX4)-generated pro-survival hydrogen peroxide (H2O2) contributing to increased levels of DNA oxidation and double strand breaks. NOX4 is constitutively active and has been found to have various isoforms expressed at multiple locations within a cell. The purpose of this study was to investigate the expression, localisation and regulation of NOX4 28 kDa splice variant, NOX4D. NOX4D has previously been shown to localise to the nucleus and nucleolus in various cell types and is implicated in the generation of reactive oxygen species (ROS) and DNA damage. Here, we demonstrate that FLT3-ITD expressing-AML patient samples as well as -cell lines express the NOX4D isoform resulting in elevated H2O2 levels compared to FLT3-WT expressing cells, as quantified by flow cytometry. Cell fractionation indicated that NOX4D is nuclear membrane-localised in FLT3-ITD expressing cells. Treatment of MV4-11 cells with receptor trafficking inhibitors, tunicamycin and brefeldin A, resulted in deglycosylation of NOX4 and NOX4D. Inhibition of the FLT3 receptor revealed that the FLT3-ITD oncogene is responsible for the production of NOX4D-generated H2O2 in AML. We found that inhibition of the PI3K/AKT and STAT5 pathways resulted in down-regulation of NOX4D-generated pro-survival ROS. Taken together these findings indicate that nuclear membrane-localised NOX4D-generated pro-survival H2O2 may be contributing to genetic instability in FLT3-ITD expressing AML.
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Affiliation(s)
- Jennifer N Moloney
- Tumour Biology Laboratory, School of Biochemistry and Cell Biology, Bioscience Research Institute, University College Cork, Cork, Ireland
| | - Ashok Kumar Jayavelu
- Institute of Molecular Cell Biology, CMB, Jena University Hospital, Jena, Germany.,Current address: Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
| | - Joanna Stanicka
- Tumour Biology Laboratory, School of Biochemistry and Cell Biology, Bioscience Research Institute, University College Cork, Cork, Ireland
| | - Sarah L Roche
- Tumour Biology Laboratory, School of Biochemistry and Cell Biology, Bioscience Research Institute, University College Cork, Cork, Ireland
| | - Rebecca L O'Brien
- Tumour Biology Laboratory, School of Biochemistry and Cell Biology, Bioscience Research Institute, University College Cork, Cork, Ireland
| | - Sebastian Scholl
- Department of Haematology/Oncology, Clinic for Internal Medicine II, Jena University Hospital, Jena, Germany
| | - Frank-D Böhmer
- Institute of Molecular Cell Biology, CMB, Jena University Hospital, Jena, Germany
| | - Thomas G Cotter
- Tumour Biology Laboratory, School of Biochemistry and Cell Biology, Bioscience Research Institute, University College Cork, Cork, Ireland
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Zavatti M, Beretti F, Casciaro F, Comitini G, Franchi F, Barbieri V, Bertoni L, De Pol A, La Sala GB, Maraldi T. Development of a novel method for amniotic fluid stem cell storage. Cytotherapy 2017; 19:1002-1012. [PMID: 28571656 DOI: 10.1016/j.jcyt.2017.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 04/11/2017] [Accepted: 04/26/2017] [Indexed: 01/02/2023]
Abstract
BACKGROUND AIMS Current procedures for collection of human amniotic fluid stem cells (hAFSCs) indicate that cells cultured in a flask for 2 weeks can then be used for research. However, hAFSCs can be retrieved directly from a small amount of amniotic fluid that can be obtained at the time of diagnostic amniocentesis. The aim of this study was to determine whether direct freezing of amniotic fluid cells is able to maintain or improve the potential of a sub-population of stem cells. METHODS We compared the potential of the hAFSCs regarding timing of freezing, cells obtained directly from amniotic fluid aspiration (D samples) and cells cultured in a flask before freezing (C samples). Colony-forming-unit ability, proliferation, morphology, stemness-related marker expression, senescence, apoptosis and differentiation potential of C and D samples were compared. RESULTS hAFSCs isolated from D samples expressed mesenchymal stem cells markers until later passages, had a good proliferation rate and exhibited differentiation capacity similar to hAFSCs of C samples. Interestingly, direct freezing induced a higher concentration of cells positive for pluripotency stem cell markers, without teratoma formation in vivo. CONCLUSIONS This study suggests that minimal processing may be adequate for the banking of amniotic fluid cells, avoiding in vitro passages before the storage and exposure to high oxygen concentration, which affect stem cell properties. This technique might be a cost-effective and reasonable approach to the process of Good Manufacturing Process accreditation for stem-cell banks.
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Affiliation(s)
- Manuela Zavatti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Francesca Beretti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Francesca Casciaro
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giuseppina Comitini
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Fabrizia Franchi
- Genetic Laboratory, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Veronica Barbieri
- Genetic Laboratory, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Laura Bertoni
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Anto De Pol
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giovanni B La Sala
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy; Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy
| | - Tullia Maraldi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy.
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11
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Kang X, Wei X, Jiang L, Niu C, Zhang J, Chen S, Meng D. Nox2 and Nox4 regulate self-renewal of murine induced-pluripotent stem cells. IUBMB Life 2016; 68:963-970. [PMID: 27797149 DOI: 10.1002/iub.1574] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 09/19/2016] [Indexed: 12/15/2022]
Abstract
Reactive oxygen species (ROS) and redox homeostasis have a pivotal role in the maintenance of stem cell pluripotency and in stem cell self-renewal; however, the mechanisms by which ROS regulate the self-renewal of stem cells have not been thoroughly studied. Here, we evaluated the role of the ROS produced by NADPH oxidase 2 (Nox2) and NADPH oxidase 4 (Nox4) in the self-renewal and stemness of murine induced-pluripotent stem cells (miPSCs). Targeted silencing of Nox2 or Nox4 reduced both NADPH oxidase activity and intracellular ROS levels, as well as alkaline phosphatase activity, the total number of miPSCs, the expression of insulin-like growth factor-1 (IGF-1), IGF-1 receptor, and the phosphorylation of extracellular signal regulated kinase (ERK) 1/2. Nox2/Nox4 overexpression or low, nontoxic concentration of H2 O2 increased cell proliferation in miPSCs. Furthermore, expression of the stemness genes Sox2 and Oct4 was lower in Nox2/Nox4-deficient miPSCs, and higher in Nox2/Nox4-overexpressing miPSCs, than in miPSCs with normal levels of Nox2/Nox4 expression. Collectively, these results suggest that Nox2- and Nox4-derived ROS contribute to stem cell pluripotency maintenance and self-renewal. © 2016 IUBMB Life, 68(12):963-970, 2016.
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Affiliation(s)
- Xueling Kang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xiangxiang Wei
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Li Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Cong Niu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Jianyi Zhang
- Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham, Birmingham, AL
| | - Sifeng Chen
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Dan Meng
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
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12
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Maraldi T, Resca E, Nicoli A, Beretti F, Zavatti M, Capodanno F, Morini D, Palomba S, La Sala GB, De Pol A. NADPH oxidase-4 and MATER expressions in granulosa cells: Relationships with ovarian aging. Life Sci 2016; 162:108-14. [PMID: 27515505 DOI: 10.1016/j.lfs.2016.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 07/27/2016] [Accepted: 08/07/2016] [Indexed: 01/08/2023]
Abstract
AIMS Relevant roles in follicular development and ovulation are played by maternal antigen that embryos require (MATER), product of a maternal effect gene, and by reactive oxygen species (ROS), indispensable for the induction of ovulatory genes. At the moment, the relationship between these two biological systems and their involvement in the ovarian aging have not been still clarified. The aim of the current experimental study was to analyse the age-related changes of the MATER and NOX proteins. MATERIALS AND METHODS MATER and ROS homeostasis was studied in granulosa cells (GCs) and cumulus cells (CCs) of infertile patients who undergone oocyte retrieval for in vitro fertilization cycles using Western blot and confocal immunofluorescence analysis. Samples were obtained from subjects with age≥40years (cases) and with age≤37years (controls). KEY FINDINGS The expression pattern of MATER and NOX observed in GCs was not different from that observed in CCs. High levels of both proteins were detected in the control samples. A significant lower expression of both MATER and NOX4 was observed in the case versus control samples. SIGNIFICANCE The expression of MATER and NOX4 proteins are closely related to the follicular development and ovulation with particular regard for ovarian aging.
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Affiliation(s)
- Tullia Maraldi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy.
| | | | - Alessia Nicoli
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy.
| | - Francesca Beretti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy.
| | - Manuela Zavatti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy.
| | - Francesco Capodanno
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy.
| | - Daria Morini
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy.
| | - Stefano Palomba
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy.
| | - Giovanni B La Sala
- Unit of Obstetrics & Gynecology, IRCCS-ASMN of Reggio Emilia, Reggio Emilia, Italy; University of Modena e Reggio Emilia, Reggio Emilia, Italy.
| | - Anto De Pol
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy.
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13
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Maraldi T, Beretti F, Guida M, Zavatti M, De Pol A. Role of hepatocyte growth factor in the immunomodulation potential of amniotic fluid stem cells. Stem Cells Transl Med 2015; 4:539-47. [PMID: 25873747 DOI: 10.5966/sctm.2014-0266] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/23/2015] [Indexed: 01/01/2023] Open
Abstract
UNLABELLED Human amniotic fluid stem cells (hAFSCs) may be useful for regenerative medicine because of their potential to differentiate into all three germ layers and to modulate immune response with different types of secretion molecules. This last issue has not been completely elucidated. The aim of this study was to investigate the secretome profile of the hAFSC, focusing on the role of hepatocyte growth factor (HGF) in immunoregulation through short and long cocultures with human peripheral blood mononuclear cells. We found that HGF produced by hAFSCs exerts a cytoprotective role, inducing an increase in caspase-dependent apoptosis in human immune cells. This study provides evidence supporting the hypothesis that amniotic fluid is an ideal source of stem cells for expansion and banking properties for therapeutic use. hAFSCs not only are less immunogenic but also can secrete immunoregulatory factors that may be useful in autoimmune diseases or allogenic implants. SIGNIFICANCE New information about the secretome pattern is reported in this paper. Human amniotic fluid stem cells (hAFSCs) possess immunomodulatory properties involving hepatocyte growth factor production. hAFSCs could be used in immunotherapies and might be able to avoid allogenic rejection.
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Affiliation(s)
- Tullia Maraldi
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy; Center for Biomedicine, European Academy of Bozen/Bolzano (EURAC) Research, Bolzano, Italy
| | - Francesca Beretti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy; Center for Biomedicine, European Academy of Bozen/Bolzano (EURAC) Research, Bolzano, Italy
| | - Marianna Guida
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy; Center for Biomedicine, European Academy of Bozen/Bolzano (EURAC) Research, Bolzano, Italy
| | - Manuela Zavatti
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy; Center for Biomedicine, European Academy of Bozen/Bolzano (EURAC) Research, Bolzano, Italy
| | - Anto De Pol
- Department of Surgery, Medicine, Dentistry and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy; Center for Biomedicine, European Academy of Bozen/Bolzano (EURAC) Research, Bolzano, Italy
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