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Yasan GT, Gunel-Ozcan A. Hypoxia and Hypoxia Mimetic Agents As Potential Priming Approaches to Empower Mesenchymal Stem Cells. Curr Stem Cell Res Ther 2024; 19:33-54. [PMID: 36642875 DOI: 10.2174/1574888x18666230113143234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/12/2022] [Accepted: 11/04/2022] [Indexed: 01/17/2023]
Abstract
Mesenchymal stem cells (MSC) exhibit self-renewal capacity and multilineage differentiation potential, making them attractive for research and clinical application. The properties of MSC can vary depending on specific micro-environmental factors. MSC resides in specific niches with low oxygen concentrations, where oxygen functions as a metabolic substrate and a signaling molecule. Conventional physical incubators or chemically hypoxia mimetic agents are applied in cultures to mimic the original low oxygen tension settings where MSC originated. This review aims to focus on the current knowledge of the effects of various physical hypoxic conditions and widely used hypoxia-mimetic agents-PHD inhibitors on mesenchymal stem cells at a cellular and molecular level, including proliferation, stemness, differentiation, viability, apoptosis, senescence, migration, immunomodulation behaviors, as well as epigenetic changes.
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Affiliation(s)
| | - Aysen Gunel-Ozcan
- Department of Stem Cell Sciences, Center for Stem Cell Research and Development, Hacettepe University, Ankara, Turkey
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2
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Olcar HN, Isildar B, Ozkan S, Ercin M, Gezginci-Oktayoglu S, Koyuturk M. Investigation of conditioned medium properties obtained from human umbilical cord mesenchymal stem/stromal cells preconditioned with dimethyloxalylglycine in a correlation with ultrastructural changes. Microsc Res Tech 2024; 87:159-171. [PMID: 37728208 DOI: 10.1002/jemt.24420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/21/2023]
Abstract
Mesenchymal stem/stromal cells (MSCs) hold significant therapeutic value due to their regeneration abilities, migration capacity, and immunosuppressive and immunomodulatory properties. These cells secrete soluble and insoluble factors, and this complex secretome contributes to their therapeutic effect. Furthermore, stimulation of cells by various external stimuli lead to secretome modifications that can increase the therapeutic efficacy. So, this study examined the effect of dimethyloxalylglycine (DMOG), a hypoxia-mimetic agent, on secretome profiles and exosome secretions of MSCs by evaluating conditioned medium (CM) and ultrastructural morphologies of the cells in comparison with unpreconditioned MSCs. The appropriate dose and duration of the use of DMOG were determined as 1000 μM and 24 h by evaluating the HIF-1α expression. DMOG-CM and N-CM were collected from MSCs incubated in serum-free medium with/without DMOG for 24 h, respectively. The content analysis of conditioned mediums (CMs) revealed that VEGF, NGF, and IL-4 levels were increased in DMOG-CM. Subsequently, exosomes were isolated from the CMs and were shown by transmission electron microscopy and Western blot analysis in both groups. The effects of CMs on proliferation and migration were determined by in vitro wound healing tests; both CMs increased the fibroblast's migratory and proliferative capacities. According to the ultrastructural evaluation, autophagosome, autolysosome, myelin figure, and microvesicular body structures were abundant in DMOG-preconditioned MSCs. Consistent with the high number of autophagic vacuoles, Beclin-1 expression was increased in those cells. These findings suggested that DMOG could alter MSCs' secretion profile, modify their ultrastructural morphology accordingly, and make the CM a more potent therapeutic tool. RESEARCH HIGHLIGHTS: Preconditioning mesenchymal stem/stromal cells with dimethyloxalylglycine, a hypoxia-mimetic agent, could modify cellular metabolism. Hypoxic mechanisms lead to alterations in the ultrastructural characteristics of mesenchymal stromal/stem cells. Preconditioning with dimethyloxalylglycine leads to ultrastructural and metabolic changes of mesenchymal stromal/stem cells along with modifications in their secretome profiles. Preconditioning of mesenchymal stromal/stem cells could render them a more potent therapeutic tool.
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Affiliation(s)
- Hanife Nurdan Olcar
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Basak Isildar
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Serbay Ozkan
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Merve Ercin
- Department of Biology, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Selda Gezginci-Oktayoglu
- Department of Biology, Molecular Biology Section, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Meral Koyuturk
- Department of Histology and Embryology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
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3
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Rasekh P, Kameli A, Khoradmehr A, Baghban N, Mohebbi G, Barmak A, Nabipour I, Azari H, Heidari Y, Daneshi A, Bargahi A, Khodabandeh Z, Zare S, Afshar A, Shirazi R, Almasi-Turk S, Tamadon A. Proliferative Effect of Aqueous Extract of Sea Cucumber ( Holothuria parva) Body Wall on Human Umbilical Cord Mesenchymal Stromal/Stem Cells. Mar Drugs 2023; 21:md21050267. [PMID: 37233461 DOI: 10.3390/md21050267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 11/25/2022] [Accepted: 11/25/2022] [Indexed: 05/27/2023] Open
Abstract
Sea cucumber extracts and their bioactive compounds have the potential for stem cell proliferation induction and for their beneficial therapeutic properties. In this study, human umbilical cord mesenchymal stromal/stem cells (hUC-MSCs) were exposed to an aqueous extract of Holothuria parva body walls. Proliferative molecules were detected using gas chromatography-mass spectrometry (GC-MS) analysis in an aqueous extract of H. parva. The aqueous extract concentrations of 5, 10, 20, 40, and 80 µg/mL and 10 and 20 ng/mL of human epidermal growth factor (EGF) as positive controls were treated on hUC-MSCs. MTT, cell count, viability, and cell cycle assays were performed. Using Western blot analysis, the effects of extracts of H. parva and EGF on cell proliferation markers were detected. Computational modeling was done to detect effective proliferative compounds in the aqueous extract of H. parva. A MTT assay showed that the 10, 20, and 40 µg/mL aqueous extract of H. parva had a proliferative effect on hUC-MSCs. The cell count, which was treated with a 20 µg/mL concentration, increased faster and higher than the control group (p < 0.05). This concentration of the extract did not have a significant effect on hUC-MSCs' viability. The cell cycle assay of hUC-MSCs showed that the percentage of cells in the G2 stage of the extract was biologically higher than the control group. Expression of cyclin D1, cyclin D3, cyclin E, HIF-1α, and TERT was increased compared with the control group. Moreover, expression of p21 and PCNA decreased after treating hUC-MSCs with the extract. However, CDC-2/cdk-1 and ERK1/2 had almost the same expression as the control group. The expression of CDK-4 and CDK-6 decreased after treatment. Between the detected compounds, 1-methyl-4-(1-methyl phenyl)-benzene showed better affinity to CDK-4 and p21 than tetradecanoic acid. The H. parva aqueous extract showed proliferative potential on hUC-MSCs.
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Affiliation(s)
- Poorya Rasekh
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Ali Kameli
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Arezoo Khoradmehr
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Neda Baghban
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Gholamhossein Mohebbi
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Alireza Barmak
- Food Lab, Bushehr University of Medical Sciences, Bushehr 7518759577, Iran
| | - Iraj Nabipour
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Hossein Azari
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Yaser Heidari
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Adel Daneshi
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Afshar Bargahi
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Zahra Khodabandeh
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran
| | - Shahrokh Zare
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran
| | - Alireza Afshar
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Reza Shirazi
- Department of Anatomy, School of Medical Sciences, Medicine, UNSW Sydney, Sydney 3052, Australia
| | - Sahar Almasi-Turk
- Department of Anatomical Sciences, School of Medicine, Bushehr University of Medical Sciences, Bushehr 7514633196, Iran
| | - Amin Tamadon
- PerciaVista R&D Co., Shiraz 7167683745, Iran
- Department for Scientific Work, West Kazakhstan Marat Ospanov Medical University, Aktobe 030012, Kazakhstan
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4
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Tian Y, Fang J, Zeng F, Chen Y, Pei Y, Gu F, Ding C, Niu G, Gu B. The role of hypoxic mesenchymal stem cells in tumor immunity. Int Immunopharmacol 2022; 112:109172. [PMID: 36087506 DOI: 10.1016/j.intimp.2022.109172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/06/2022] [Accepted: 08/14/2022] [Indexed: 11/09/2022]
Abstract
The emerging evidence has shown that mesenchymal stem cells (MSCs) not only exert a significant role in the occurrence and development of tumors, but also have immunosuppressive potential in tumor immunity. Hypoxia is a sign of solid tumors, but how functions of hypoxic MSCs alter in the tumor microenvironment (TME) remains less well and comprehensively described. Herein, we mostly describe and investigate recent advances in our comprehension of the emerging effects of different tissue derived MSCs in hypoxia condition on tumor progression and development, as well as bidirectional influence between hypoxic MSCs and immune cells of the TME. Furthermore, we also discuss the potential drug-resistant and therapeutic role of hypoxic MSCs. It can be envisaged that novel and profound insights into the functionality of hypoxic MSCs and the underlying mechanisms in tumor and tumor immunity will promote the meaningful and promising treatment strategies against tumor.
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Affiliation(s)
- Yiqing Tian
- Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Jian Fang
- The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei 230022, Anhui, PR China
| | - Fanpeng Zeng
- Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Yongqiang Chen
- Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Yunfeng Pei
- Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Feng Gu
- Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Chen Ding
- Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, PR China.
| | - Guoping Niu
- Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, PR China.
| | - Bing Gu
- Laboratory Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510000, PR China.
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5
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Pan J, Zheng W, Sun Y, Xu T. The long noncoding RNA LTCONS5539 up-regulates the TRAF6-mediated immune responses in miiuy croaker (Miichthys miiuy). FISH & SHELLFISH IMMUNOLOGY 2022; 126:263-270. [PMID: 35618171 DOI: 10.1016/j.fsi.2022.05.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/29/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
With the further study of long noncoding RNAs (lncRNAs), an increasing number of biological studies have demonstrated that lncRNAs are involved in various physiological processes, including cell proliferation, apoptosis, invasion, development and disease states. However, unlike mammals, little is known about the role of lncRNAs in the innate immunity of teleost fish. Here, we identify a lncRNA, named LTCONS5539, as critical role in the antiviral and antibacterial response of miiuy croaker and the results showed that lncRNA LTCONS5539 plays a critical regulatory role on TRAF6. Firstly, we found that LPS and poly(I:C) can up-regulate the expression of lncRNA LTCONS5539. Elevated lncRNA LTCONS5539 is capable of increasing the production of inflammatory factors and antiviral genes. Furthermore, the over-expression of lncRNA LTCONS5539 increases the expression of TRAF6 which was confirmed by qPCR and western blotting. On these foundations, we also proved that lncRNA LTCONS5539 modulates innate immunity through TRAF6-mediated immune responses through dual luciferase reporter assay. These results will help to further understand the immunomodulatory mechanisms of lncRNA in teleost fish.
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Affiliation(s)
- Jiajia Pan
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Weiwei Zheng
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, China.
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, China.
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6
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Moniz I, Ramalho-Santos J, Branco AF. Differential Oxygen Exposure Modulates Mesenchymal Stem Cell Metabolism and Proliferation through mTOR Signaling. Int J Mol Sci 2022; 23:ijms23073749. [PMID: 35409106 PMCID: PMC8998189 DOI: 10.3390/ijms23073749] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/22/2022] [Accepted: 03/25/2022] [Indexed: 12/20/2022] Open
Abstract
Mesenchymal stem cells reside under precise hypoxic conditions that are paramount in determining cell fate and behavior (metabolism, proliferation, differentiation, etc.). In this work, we show that different oxygen tensions promote a distinct proliferative response and affect the biosynthetic demand and global metabolic profile of umbilical cord-mesenchymal stem cells (UC-MSCs). Using both gas-based strategies and CoCl2 as a substitute for the costly hypoxic chambers, we found that specific oxygen tensions influence the fate of UC-MSCs differently. While 5% O2 potentiates proliferation, stimulates biosynthetic pathways, and promotes a global hypermetabolic profile, exposure to <1% O2 contributes to a quiescent-like cell state that relies heavily on anaerobic glycolysis. We show that using CoCl2 as a hypoxia substitute of moderate hypoxia has distinct metabolic effects, when compared with gas-based strategies. The present study also highlights that, while severe hypoxia regulates global translation via mTORC1 modulation, its effects on survival-related mechanisms are mainly modulated through mTORC2. Therefore, the experimental conditions used in this study establish a robust and reliable hypoxia model for UC-MSCs, providing relevant insights into how stem cells are influenced by their physiological environment, and how different strategies of modulating hypoxia may influence experimental outcomes.
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Affiliation(s)
- Inês Moniz
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal;
| | - João Ramalho-Santos
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal;
- Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
- Correspondence: (J.R.-S.); (A.F.B.)
| | - Ana F. Branco
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal;
- Correspondence: (J.R.-S.); (A.F.B.)
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7
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Pendse S, Kale V, Vaidya A. The Intercellular Communication Between Mesenchymal Stromal Cells and Hematopoietic Stem Cells Critically Depends on NF-κB Signalling in the Mesenchymal Stromal Cells. Stem Cell Rev Rep 2022; 18:2458-2473. [PMID: 35347654 DOI: 10.1007/s12015-022-10364-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2022] [Indexed: 12/31/2022]
Abstract
Mesenchymal stromal cells (MSCs) regulate the fate of the hematopoietic stem cells (HSCs) through both cell-cell interactions and paracrine mechanisms involving multiple signalling pathways. We have previously shown that co-culturing of HSCs with CoCl2-treated MSCs expands functional HSCs. While performing these experiments, we had observed that the growth of CoCl2-treated MSCs was significantly stunted. Here, we show that CoCl2-treated MSCs possess activated NF-κB signalling pathway, and its pharmacological inhibition significantly relieves their growth arrest. Most interestingly, we found that pharmacological inhibition of NF-κB pathway in both control and CoCl2-treated MSCs completely blocks their intercellular communication with the co-cultured hematopoietic stem and progenitor cells (HSPCs), resulting in an extremely poor output of hematopoietic cells. Mechanistically, we show that this is due to the down-regulation of adhesion molecules and various HSC-supportive factors in the MSCs. This loss of physical interaction with HSPCs could be partially restored by treating the MSCs with calcium ionophore or calmodulin, suggesting that NF-κB regulates intracellular calcium flux in the MSCs. Importantly, the HSPCs co-cultured with NF-κB-inhibited-MSCs were in a quiescent state, which could be rescued by re-culturing them with untreated MSCs. Our data underscore a critical requirement of NF-κB signalling in the MSCs in intercellular communication between HSCs and MSCs for effective hematopoiesis to occur ex vivo. Our data raises a cautionary note against excessive use of anti-inflammatory drugs targeting NF-κB.
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Affiliation(s)
- Shalmali Pendse
- Symbiosis Centre for Stem Cell Research, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, Maharashtra, India
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, Maharashtra, India
| | - Vaijayanti Kale
- Symbiosis Centre for Stem Cell Research, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, Maharashtra, India
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, Maharashtra, India
| | - Anuradha Vaidya
- Symbiosis Centre for Stem Cell Research, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, Maharashtra, India.
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, Maharashtra, India.
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Insight in Hypoxia-Mimetic Agents as Potential Tools for Mesenchymal Stem Cell Priming in Regenerative Medicine. Stem Cells Int 2022; 2022:8775591. [PMID: 35378955 PMCID: PMC8976669 DOI: 10.1155/2022/8775591] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 02/28/2022] [Accepted: 03/09/2022] [Indexed: 12/13/2022] Open
Abstract
Hypoxia-mimetic agents are new potential tools in MSC priming instead of hypoxia incubators or chambers. Several pharmaceutical/chemical hypoxia-mimetic agents can be used to induce hypoxia in the tissues: deferoxamine (DFO), dimethyloxaloylglycine (DMOG), 2,4-dinitrophenol (DNP), cobalt chloride (CoCl2), and isoflurane (ISO). Hypoxia-mimetic agents can increase cell proliferation, preserve or enhance differentiation potential, increase migration potential, and induce neovascularization in a concentration- and stem cell source-dependent manner. Moreover, hypoxia-mimetic agents may increase HIF-1α, changing the metabolism and enhancing glycolysis like hypoxia. So, there is clear evidence that treatment with hypoxia-mimetic agents is beneficial in regenerative medicine, preserving stem cell capacities. These agents are not studied so wildly as hypoxia but, considering the low cost and ease of use, are believed to find application as pretreatment of many diseases such as ischemic heart disease and myocardial fibrosis and promote cardiac and cartilage regeneration. The knowledge of MSC priming is critical in evaluating safety procedures and use in clinics. In this review, similarities and differences between hypoxia and hypoxia-mimetic agents in terms of their therapeutic efficiency are considered in detail. The advantages, challenges, and future perspectives in MSC priming with hypoxia mimetic agents are also discussed.
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Guo X, Huang D, Li D, Zou L, Lv H, Wang Y, Tan M. Adipose-derived mesenchymal stem cells with hypoxic preconditioning improve tenogenic differentiation. J Orthop Surg Res 2022; 17:49. [PMID: 35090498 PMCID: PMC8796587 DOI: 10.1186/s13018-021-02908-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 12/30/2021] [Indexed: 12/17/2022] Open
Abstract
Background Adipose-derived mesenchymal stem cells (ADSCs), as seed cells for tendon tissue engineering, are promising for tendon repair and regeneration. But for ADSCs, diverse oxygen tensions have different stimulatory effects. To explore this issue, we investigated the tenogenic differentiation capability of ADSCs under hypoxia condition (5% O2) and the possible signaling pathways correspondingly. The effects of different oxygen tensions on proliferation, migration, and tenogenic differentiation potential of ADSCs were investigated. Methods P4 ADSCs were divided into a hypoxic group and a normoxic group. The hypoxic group was incubated under a reduced O2 pressure (5% O2, 5% CO2, balanced N2). The normoxic group was cultured in 21% O2. Two groups were compared: HIF-1α inhibitor (2-MeOE2) in normoxic culturing conditions and hypoxic culturing conditions. Hypoxia-inducible factor-1α (HIF-1α) and VEGF were measured using RT-qPCR. Specific HIF-1α inhibitor 2-methoxyestradiol (2-MeOE2) was applied to investigate whether HIF-1α involved in ADSCs tenogenesis under hypoxia. Results Hypoxia significantly reduced proliferation and migration of ADSCs. Continuous treatment of ADSCs at 5% O2 resulted in a remarkable decrease in HIF-1α expression in comparison with 20% O2. Additionally, ADSCs of hypoxia preconditioning exhibited higher mRNA expression levels of the related key tenogenic makers and VEGF than normoxia via RT-qPCR measurement (p ˂ 0.05). Furthermore, the effects of hypoxia on tenogenic differentiation of ADSCs were inhibited by 2-MeOE2. Hypoxia can also stimulate VEGF production in ADSCs. Conclusions Our findings demonstrate that hypoxia preconditioning attenuates the proliferation and migration ability of ADSCs, but has positive impact on tenogenic differentiation through HIF-1α signaling pathway.
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Di Mattia M, Mauro A, Citeroni MR, Dufrusine B, Peserico A, Russo V, Berardinelli P, Dainese E, Cimini A, Barboni B. Insight into Hypoxia Stemness Control. Cells 2021; 10:cells10082161. [PMID: 34440930 PMCID: PMC8394199 DOI: 10.3390/cells10082161] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 01/10/2023] Open
Abstract
Recently, the research on stemness and multilineage differentiation mechanisms has greatly increased its value due to the potential therapeutic impact of stem cell-based approaches. Stem cells modulate their self-renewing and differentiation capacities in response to endogenous and/or extrinsic factors that can control stem cell fate. One key factor controlling stem cell phenotype is oxygen (O2). Several pieces of evidence demonstrated that the complexity of reproducing O2 physiological tensions and gradients in culture is responsible for defective stem cell behavior in vitro and after transplantation. This evidence is still worsened by considering that stem cells are conventionally incubated under non-physiological air O2 tension (21%). Therefore, the study of mechanisms and signaling activated at lower O2 tension, such as those existing under native microenvironments (referred to as hypoxia), represent an effective strategy to define if O2 is essential in preserving naïve stemness potential as well as in modulating their differentiation. Starting from this premise, the goal of the present review is to report the status of the art about the link existing between hypoxia and stemness providing insight into the factors/molecules involved, to design targeted strategies that, recapitulating naïve O2 signals, enable towards the therapeutic use of stem cell for tissue engineering and regenerative medicine.
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Affiliation(s)
- Miriam Di Mattia
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
| | - Annunziata Mauro
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
- Correspondence: ; Tel.: +39-086-1426-6888; Fax: +39-08-6126-6860
| | - Maria Rita Citeroni
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
| | - Beatrice Dufrusine
- Department of Innovative Technologies in Medicine & Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy;
- Center of Advanced Studies and Technology (CAST), 66100 Chieti, Italy
| | - Alessia Peserico
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
| | - Valentina Russo
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
| | - Paolo Berardinelli
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
| | - Enrico Dainese
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
| | - Annamaria Cimini
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
- Sbarro Institute for Cancer Research and Molecular Medicine and Center for Biotechnology, Temple University, Philadelphia, PA 19122, USA
| | - Barbara Barboni
- Unit of Basic and Applied Biosciences, Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy; (M.D.M.); (M.R.C.); (A.P.); (V.R.); (P.B.); (E.D.); (B.B.)
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11
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Shatrova AN, Burova EB, Kharchenko MV, Smirnova IS, Lyublinskaya OG, Nikolsky NN, Borodkina AV. Outcomes of Deferoxamine Action on H 2O 2-Induced Growth Inhibition and Senescence Progression of Human Endometrial Stem Cells. Int J Mol Sci 2021; 22:6035. [PMID: 34204881 PMCID: PMC8199751 DOI: 10.3390/ijms22116035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/24/2021] [Accepted: 06/01/2021] [Indexed: 12/27/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are broadly applied in regenerative therapy to replace cells that are lost or impaired during disease. The low survival rate of MSCs after transplantation is one of the major limitations heavily influencing the success of the therapy. Unfavorable microenvironments with inflammation and oxidative stress in the damaged regions contribute to MSCs loss. Most of the strategies developed to overcome this obstacle are aimed to prevent stress-induced apoptosis, with little attention paid to senescence-another common stress reaction of MSCs. Here, we proposed the strategy to prevent oxidative stress-induced senescence of human endometrial stem cells (hMESCs) based on deferoxamine (DFO) application. DFO prevented DNA damage and stress-induced senescence of hMESCs, as evidenced by reduced levels of reactive oxygen species, lipofuscin, cyclin D1, decreased SA-β-Gal activity, and improved mitochondrial function. Additionally, DFO caused accumulation of HIF-1α, which may contribute to the survival of H2O2-treated cells. Importantly, cells that escaped senescence due to DFO preconditioning preserved all the properties of the initial hMESCs. Therefore, once protecting cells from oxidative damage, DFO did not alter further hMESCs functioning. The data obtained may become the important prerequisite for development of a new strategy in regenerative therapy based on MSCs preconditioning using DFO.
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Affiliation(s)
- Alla N. Shatrova
- Department of Intracellular Signaling and Transport, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Ave. 4, 194064 St. Petersburg, Russia; (E.B.B.); (M.V.K.); (I.S.S.); (O.G.L.); (N.N.N.); (A.V.B.)
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12
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Modulation of the Dental Pulp Stem Cell Secretory Profile by Hypoxia Induction Using Cobalt Chloride. J Pers Med 2021; 11:jpm11040247. [PMID: 33808091 PMCID: PMC8066657 DOI: 10.3390/jpm11040247] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 12/15/2022] Open
Abstract
The action of stem cells is mediated by their paracrine secretions which comprise the secretory profile. Various approaches can be used to modify the secretory profile of stem cells. Creating a hypoxic environment is one method. The present study aims to demonstrate the influence of CoCl2 in generating hypoxic conditions in a dental pulp stem cell (DPSCs) culture, and the effect of this environment on their secretory profile. DPSCs that were isolated from human permanent teeth were characterized and treated with different concentrations of CoCl2 to assess their viability by an 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and proliferation by a cell counting kit (CCK)-8 assay. The gene expression level of hypoxia-inducible factor 1-alpha (HIF-1α) was analyzed by quantitative real time polymerase chain reaction (qRT-PCR) to demonstrate a hypoxic environment. Comparative evaluation of the growth factors and cytokines were done by cytometric bead array. Gene expression levels of transcription factors OCT4 and SOX2 were analyzed by qRT-PCR to understand the effect of CoCl2 on stemness in DPSCs. DPSCs were positive for MSC-specific markers. Doses of CoCl2, up to 20 µM, did not negatively affect cell viability; in low doses (5 µM), it promoted cell survival. Treatment with 10 µM of CoCl2 significantly augmented the genetic expression of HIF-1α. Cells treated with 10 µM of CoCl2 showed changes in the levels of growth factors and cytokines produced. It was very evident that CoCl2 also increased the expression of OCT4 and SOX2, which is the modulation of stemness of DPSCs. A CoCl2 treatment-induced hypoxic environment modulates the secretory profile of DPSCs.
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13
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Gao W, Chang R, Sun Y, Xu T. MicroRNA-2187 Modulates the NF-κB and IRF3 Pathway in Teleost Fish by Targeting TRAF6. Front Immunol 2021; 12:647202. [PMID: 33659012 PMCID: PMC7917119 DOI: 10.3389/fimmu.2021.647202] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 01/22/2021] [Indexed: 12/11/2022] Open
Abstract
The innate immune organs and cells detect the invasion of pathogenic microorganisms, which trigger the innate immune response. A proper immune response can protect the organisms from pathogen invasion. However, excessive immunity can destroy immune homeostasis, leading to uncontrolled inflammation or pathogen transmission. Evidence shows that the miRNA-mediated immune regulatory network in mammals has had a significant impact, but the antibacterial and antiviral responses involved in miRNAs need to be further studied in lower vertebrates. Here, we report that miR-2187 as a negative regulator playing a critical role in the antiviral and antibacterial response of miiuy croaker. We find that pathogens such as Vibrio anguillarum and Siniperca chuatsi rhabdovirus (SCRV) can up-regulate the expression of miR-2187. Elevated miR-2187 is capable of reducing the production of inflammatory factors and antiviral genes by targeting TRAF6, thereby avoiding excessive inflammatory response. Furthermore, we proved that miR-2187 modulates innate immunity through TRAF6-mediated NF-κB and IRF3 signaling pathways. The above results indicate that miR-2187 acts as an immune inhibitor involved in host antibacterial and antiviral responses, thus enriching the immune regulatory network of the interaction between host and pathogen in lower vertebrates.
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Affiliation(s)
- Wenya Gao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Renjie Chang
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, Shanghai, China
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Shanghai Ocean University), Ministry of Education, Shanghai, China.,National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
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14
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Al Tameemi W, Dale TP, Al-Jumaily RMK, Forsyth NR. Hypoxia-Modified Cancer Cell Metabolism. Front Cell Dev Biol 2019; 7:4. [PMID: 30761299 PMCID: PMC6362613 DOI: 10.3389/fcell.2019.00004] [Citation(s) in RCA: 301] [Impact Index Per Article: 60.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 01/10/2019] [Indexed: 12/20/2022] Open
Abstract
While oxygen is critical to the continued existence of complex organisms, extreme levels of oxygen within a system, known as hypoxia (low levels of oxygen) and hyperoxia (excessive levels of oxygen), potentially promote stress within a defined biological environment. The consequences of tissue hypoxia, a result of a defective oxygen supply, vary in response to the gravity, extent and environment of the malfunction. Persistent pathological hypoxia is incompatible with normal biological functions, and as a result, multicellular organisms have been compelled to develop both organism-wide and cellular-level hypoxia solutions. Both direct, including oxidative phosphorylation down-regulation and inhibition of fatty-acid desaturation, and indirect processes, including altered hypoxia-sensitive transcription factor expression, facilitate the metabolic modifications that occur in response to hypoxia. Due to the dysfunctional vasculature associated with large areas of some cancers, sections of these tumors continue to develop in hypoxic environments. Crucial to drug development, a robust understanding of the significance of these metabolism changes will facilitate our understanding of cancer cell survival. This review defines our current knowledge base of several of the hypoxia-instigated modifications in cancer cell metabolism and exemplifies the correlation between metabolic change and its support of the hypoxic-adapted malignancy.
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Affiliation(s)
- Wafaa Al Tameemi
- Faculty of Medicine and Health Sciences, Institute for Science and Technology in Medicine, Keele University, Staffordshire, United Kingdom
| | - Tina P. Dale
- Faculty of Medicine and Health Sciences, Institute for Science and Technology in Medicine, Keele University, Staffordshire, United Kingdom
| | - Rakad M. Kh Al-Jumaily
- Faculty of Medicine and Health Sciences, Institute for Science and Technology in Medicine, Keele University, Staffordshire, United Kingdom
- Department of Biology, College of Science, University of Baghdad, Baghdad, Iraq
| | - Nicholas R. Forsyth
- Faculty of Medicine and Health Sciences, Institute for Science and Technology in Medicine, Keele University, Staffordshire, United Kingdom
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15
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Davis CK, Jain SA, Bae ON, Majid A, Rajanikant GK. Hypoxia Mimetic Agents for Ischemic Stroke. Front Cell Dev Biol 2019; 6:175. [PMID: 30671433 PMCID: PMC6331394 DOI: 10.3389/fcell.2018.00175] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 12/10/2018] [Indexed: 12/27/2022] Open
Abstract
Every year stroke claims more than 6 million lives worldwide. The majority of them are ischemic stroke. Small molecule-based therapeutics for ischemic stroke has attracted a lot of attention, but none has been shown to be clinically useful so far. Hypoxia-inducible factor-1 (HIF-1) plays a crucial role in the transcriptional adaptation of cells to hypoxia. Small molecule-based hypoxia-mimetic agents either stabilize HIF-1α via HIF-prolyl hydroxylases (PHDs) inhibition or through other mechanisms. In both the cases, these agents have been shown to confer ischemic neuroprotection in vitro and in vivo. The agents which act via PHD inhibition are mainly classified into iron chelators, iron competitors, and 2 oxoglutarate (2OG) analogs. This review discusses HIF structure and key players in the HIF-1 degradation pathway as well as the genes, proteins and chemical molecules that are connected to HIF-1 and how they affect cell survival following ischemic injury. Furthermore, this review gives a summary of studies that used PHD inhibitors and other HIF-1α stabilizers as hypoxia-mimetic agents for the treatment of ischemic injury.
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Affiliation(s)
- Charles K Davis
- School of Biotechnology, National Institute of Technology Calicut, Calicut, India
| | - Saurabh A Jain
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, United Kingdom
| | - Ok-Nam Bae
- College of Pharmacy, Hanyang University, Ansan, South Korea
| | - Arshad Majid
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, United Kingdom
| | - G K Rajanikant
- School of Biotechnology, National Institute of Technology Calicut, Calicut, India
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16
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Toro-Urrego N, Vesga-Jiménez DJ, Herrera MI, Luaces JP, Capani F. Neuroprotective Role of Hypothermia in Hypoxic-ischemic Brain Injury: Combined Therapies using Estrogen. Curr Neuropharmacol 2019; 17:874-890. [PMID: 30520375 PMCID: PMC7052835 DOI: 10.2174/1570159x17666181206101314] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/26/2018] [Accepted: 11/28/2018] [Indexed: 12/15/2022] Open
Abstract
Hypoxic-ischemic brain injury is a complex network of factors, which is mainly characterized by a decrease in levels of oxygen concentration and blood flow, which lead to an inefficient supply of nutrients to the brain. Hypoxic-ischemic brain injury can be found in perinatal asphyxia and ischemic-stroke, which represent one of the main causes of mortality and morbidity in children and adults worldwide. Therefore, knowledge of underlying mechanisms triggering these insults may help establish neuroprotective treatments. Selective Estrogen Receptor Modulators and Selective Tissue Estrogenic Activity Regulators exert several neuroprotective effects, including a decrease of reactive oxygen species, maintenance of cell viability, mitochondrial survival, among others. However, these strategies represent a traditional approach of targeting a single factor of pathology without satisfactory results. Hence, combined therapies, such as the administration of therapeutic hypothermia with a complementary neuroprotective agent, constitute a promising alternative. In this sense, the present review summarizes the underlying mechanisms of hypoxic-ischemic brain injury and compiles several neuroprotective strategies, including Selective Estrogen Receptor Modulators and Selective Tissue Estrogenic Activity Regulators, which represent putative agents for combined therapies with therapeutic hypothermia.
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Affiliation(s)
- Nicolás Toro-Urrego
- Address correspondence to this author at the Laboratorio de Citoarquitectura y Plasticidad Neuronal, Instituto de Investigaciones Cardiológicas, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina; E-mail:
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17
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Bahsoun S, Coopman K, Forsyth NR, Akam EC. The Role of Dissolved Oxygen Levels on Human Mesenchymal Stem Cell Culture Success, Regulatory Compliance, and Therapeutic Potential. Stem Cells Dev 2018; 27:1303-1321. [DOI: 10.1089/scd.2017.0291] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Soukaina Bahsoun
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom
| | - Karen Coopman
- Centre for Biological Engineering, Loughborough University, Loughborough, United Kingdom
| | - Nicholas R. Forsyth
- Guy Hilton Research Centre, Institute for Science and Technology in Medicine, Keele University, Keele, United Kingdom
| | - Elizabeth C. Akam
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom
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18
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Synthetic Clay–based Hypoxia Mimetic Hydrogel for Pulp Regeneration: The Impact on Cell Activity and Release Kinetics Based on Dental Pulp–derived Cells In Vitro. J Endod 2018; 44:1263-1269. [DOI: 10.1016/j.joen.2018.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 03/14/2018] [Accepted: 04/09/2018] [Indexed: 02/02/2023]
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19
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Chai YC, Mendes LF, van Gastel N, Carmeliet G, Luyten FP. Fine-tuning pro-angiogenic effects of cobalt for simultaneous enhancement of vascular endothelial growth factor secretion and implant neovascularization. Acta Biomater 2018; 72:447-460. [PMID: 29626696 DOI: 10.1016/j.actbio.2018.03.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/25/2018] [Accepted: 03/28/2018] [Indexed: 02/07/2023]
Abstract
Rapid neovascularization of a tissue-engineered (TE) construct by the host vasculature is quintessential to warrant effective bone regeneration. This process can be promoted through active induction of angiogenic growth factor secretion or by implementation of in vitro pre-vascularization strategies. In this study, we aimed at optimizing the pro-angiogenic effect of Cobalt (Co2+) to enhance vascular endothelial growth factor (VEGF) expression by human periosteum-derived mesenchymal stem cells (hPDCs). Simultaneously we set out to promote microvascular network formation by co-culturing with human umbilical vein endothelial cells (HUVECs). The results showed that Co2+ treatments (at 50, 100 or 150 µM) significantly upregulated in vitro VEGF expression, but inhibited hPDCs growth and HUVECs network formation in co-cultures. These inhibitory effects were mitigated at lower Co2+ concentrations (at 5, 10 or 25 µM) while VEGF expression remained significantly upregulated and further augmented in the presence of Ascorbic Acid and Dexamethasone possibly through Runx2 upregulation. The supplements also facilitated HUVECs network formation, which was dependent on the quantity and spatial distribution of collagen type-1 matrix deposited by the hPDCs. When applied to hPDCs seeded onto calcium phosphate scaffolds, the supplements significantly induced VEGF secretion in vitro, and promoted higher vascularization upon ectopic implantation in nude mice shown by an increase of CD31 positive blood vessels within the scaffolds. Our findings provided novel insights into the pleotropic effects of Co2+ on angiogenesis (i.e. promoted VEGF secretion and inhibited endothelial network formation), and showed potential to pre-condition TE constructs under one culture regime for improved implant neovascularization in vivo. STATEMENT OF SIGNIFICANT Cobalt (Co2+) is known to upregulate vascular endothelial growth factor (VEGF) secretion, however it also inhibits in vitro angiogenesis through unknown Co2+-induced events. This limits the potential of Co2+ for pro-angiogenesis of tissue engineered (TE) implants. We showed that Co2+ upregulated VEGF expression by human periosteum-derived cells (hPDCs) but reduced the cell growth, and endothelial network formation due to reduction of col-1 matrix deposition. Supplementation with Ascorbic acid and Dexamethasone concurrently improved hPDCs growth, endothelial network formation, and upregulated VEGF secretion. In vitro pre-conditioning of hPDC-seeded TE constructs with this fine-tuned medium enhanced VEGF secretion and implant neovascularization. Our study provided novel insights into the pleotropic effects of Co2+ on angiogenesis and formed the basis for improving implant neovascularization.
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20
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Li L, Yang R, Feng M, Guo Y, Wang Y, Guo J, Lu X. Rig-I is involved in inflammation through the IPS-1/TRAF 6 pathway in astrocytes under chemical hypoxia. Neurosci Lett 2018; 672:46-52. [PMID: 29474875 DOI: 10.1016/j.neulet.2018.02.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/13/2018] [Accepted: 02/15/2018] [Indexed: 12/26/2022]
Abstract
The retinoic acid-inducible gene I (RIG-I) is a crucial cytoplasmic pathogen recognition receptor involved in neuroinflammation in degenerative diseases. In the present study, in vitro human astrocytes were subjected to a chemical hypoxia model using cobalt chloride pretreatment. Chemical hypoxia induces the up-regulation of RIG-I in astrocytes and results in the expression of inflammatory cytokines IL-1β, IL-6, and TNF-α in an NF-κB dependent manner. Elevated RIG-I modulates the interaction of interferon-β promoter stimulator-1 (IPS-1) and TNF receptor-associated factor 6 (TRAF6) following chemical hypoxia. Inhibition of IPS-1 or TRAF6 suppresses RIG-I-induced NF-κB activation and inflammatory cytokines in response to chemical hypoxia. These data suggest that chemical hypoxia leads to RIG-I activation and the expression of inflammatory cytokines through the NF-κB pathway. Blocking IPS-1/TRAF6 pathway relieves RIG-I-induced neuroinflammation in astrocytes subjected to hypoxia.
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Affiliation(s)
- Lei Li
- Department of Geriatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, Jiangsu, China; Department of Geriatrics, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, 221002, China
| | - Rongli Yang
- Department of Geriatrics, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, 221002, China
| | - Meijiang Feng
- Department of Geriatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, Jiangsu, China
| | - YiChen Guo
- School of medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - YuXuan Wang
- School of medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jun Guo
- School of medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiang Lu
- Department of Geriatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210011, Jiangsu, China.
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21
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Calvo-Anguiano G, Lugo-Trampe JJ, Camacho A, Said-Fernández S, Mercado-Hernández R, Zomosa-Signoret V, Rojas-Martínez A, Ortiz-López R. Comparison of specific expression profile in two in vitro hypoxia models. Exp Ther Med 2018; 15:4777-4784. [PMID: 29805495 PMCID: PMC5958671 DOI: 10.3892/etm.2018.6048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 03/15/2018] [Indexed: 11/13/2022] Open
Abstract
The microenvironment plays a fundamental role in carcinogenesis: Acidity and hypoxia are actively involved in this process. It is important to have in vitro models to study these mechanisms. The models that are most commonly referred to are the hypoxia chamber and the chemical induction [Cobalt (II) chloride]. It is not yet defined if these models are interchangeable if the metabolic effect is the same, and if the results may be compared in these models. In the present study, the response to the effect of stress (hypoxia and acidity) in both models was evaluated. The results indicated that in the chemical model, the effect of hypoxia appeared in an early form at 6 h; whereas in the gas chamber the effect was slow and gradual and at 72 h there was an overexpression of erythropoietin (EPO), vascular endothelial growth factor (VEGF), carbonic anhydrase 9 (CA9) and hypoxia-inducible factor 1α (HIF1α). In addition to the genes analyzed by reverse transcription-quantitative polymerase chain reaction, the global expression analysis between both models revealed the 9 most affected genes in common. The present study additionally identified 3 potential genes (lysyl oxidase, ankyrin repeat domain 37, B-cell lymphoma 2 interacting protein 3 like) previously identified in other studies, which may be considered as universal hypoxia genes along with HIF1α, EPO, VEGF, glucose transporter 1 (GLUT1), CA9, and LDH. To the best of the author's knowledge, this is the first time that both hypoxia models have been compared, and it was demonstrated that the effect of hypoxia induction was time sensitive in each model. These observations must be considered prior to selecting one of these models to identify selective hypoxia genes and their effects in cancer.
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Affiliation(s)
- Geovana Calvo-Anguiano
- Biochemistry and Molecular Medicine Department, School of Medicine, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico.,Center for Research and Development in Health Sciences, Genomic Unit, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico
| | - Jose J Lugo-Trampe
- Genetic Department, School of Medicine, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico
| | - Alberto Camacho
- Biochemistry and Molecular Medicine Department, School of Medicine, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico.,Center for Research and Development in Health Sciences, Neurometabolism Unit, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico
| | - Salvador Said-Fernández
- Biochemistry and Molecular Medicine Department, School of Medicine, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico
| | - Roberto Mercado-Hernández
- Science Exact Department, School of Biological Science, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 66451, Mexico
| | - Viviana Zomosa-Signoret
- Biochemistry and Molecular Medicine Department, School of Medicine, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico
| | - Augusto Rojas-Martínez
- Center for Research and Development in Health Sciences, Experimental Therapies Unit, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico.,Tecnologico de Monterrey, School of Medicine and Health Sciences, Monterrey, Nuevo León 64710, Mexico
| | - Rocio Ortiz-López
- Center for Research and Development in Health Sciences, Genomic Unit, Universidad Autonoma de Nuevo Leon, Monterrey, Nuevo León 64460, Mexico.,Tecnologico de Monterrey, School of Medicine and Health Sciences, Monterrey, Nuevo León 64710, Mexico
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22
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Fujisawa K, Takami T, Okada S, Hara K, Matsumoto T, Yamamoto N, Yamasaki T, Sakaida I. Analysis of Metabolomic Changes in Mesenchymal Stem Cells on Treatment with Desferrioxamine as a Hypoxia Mimetic Compared with Hypoxic Conditions. Stem Cells 2018; 36:1226-1236. [PMID: 29577517 DOI: 10.1002/stem.2826] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 02/06/2018] [Accepted: 02/18/2018] [Indexed: 01/08/2023]
Abstract
Mesenchymal stem cells (MSCs) are commonly used in regenerative medicine, but their therapeutic effects vary depending on the culture environment. Hypoxic culturing can be used to maintain stem cells in an undifferentiated state, but is expensive and difficult to perform. The aim of this study was to determine the effectiveness of desferrioxamine (DFO), a hypoxia-mimetic reagent, as an alternative to hypoxic culturing by analyzing metabolic changes in MSCs under hypoxic conditions compared with changes induced by DFO. Low concentrations of DFO reduced mitochondrial activity and apoptosis. Therefore, low concentrations of DFO may be useful for MSC preconditioning. Metabolome analysis showed that both hypoxic treatment and DFO administration exhibited similar metabolite patterns except purine, pyrimidine, and tricarboxylic acid cycle (TCA) cycle related metabolites. Therefore, the use of DFO at low concentrations is a potential substitute for hypoxic culturing. These findings may form the foundation for the development of future regenerative therapies using MSCs. Stem Cells 2018;36:1226-1236.
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Affiliation(s)
- Koichi Fujisawa
- Center for Regenerative Medicine, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan.,Department of Gastroenterology and Hepatology, Ube, Yamaguchi, Japan
| | - Taro Takami
- Department of Gastroenterology and Hepatology, Ube, Yamaguchi, Japan
| | - Sae Okada
- Department of Gastroenterology and Hepatology, Ube, Yamaguchi, Japan
| | - Kazusa Hara
- Department of Gastroenterology and Hepatology, Ube, Yamaguchi, Japan.,Faculty of Health Science, Department of Laboratory Science, Ube, Yamaguchi, Japan
| | | | - Naoki Yamamoto
- Department of Gastroenterology and Hepatology, Ube, Yamaguchi, Japan
| | - Takahiro Yamasaki
- Department of Oncology and Laboratory Medicine, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Isao Sakaida
- Center for Regenerative Medicine, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan.,Department of Gastroenterology and Hepatology, Ube, Yamaguchi, Japan
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23
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The Hypoxia-Mimetic Agent Cobalt Chloride Differently Affects Human Mesenchymal Stem Cells in Their Chondrogenic Potential. Stem Cells Int 2018; 2018:3237253. [PMID: 29731777 PMCID: PMC5872594 DOI: 10.1155/2018/3237253] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 12/10/2017] [Accepted: 01/01/2018] [Indexed: 12/19/2022] Open
Abstract
Adult stem cells are a promising cell source for cartilage regeneration. They resided in a special microenvironment known as the stem-cell niche, characterized by the presence of low oxygen concentration. Cobalt chloride (CoCl2) imitates hypoxia in vitro by stabilizing hypoxia-inducible factor-alpha (HIF-1α), which is the master regulator in the cellular adaptive response to hypoxia. In this study, the influence of CoCl2 on the chondrogenic potential of human MSCs, isolated from dental pulp, umbilical cord, and adipose tissue, was investigated. Cells were treated with concentrations of CoCl2 ranging from 50 to 400 μM. Cell viability, HIF-1α protein synthesis, and the expression of the chondrogenic markers were analyzed. The results showed that the CoCl2 supplementation had no effect on cell viability, while the upregulation of chondrogenic markers such as SOX9, COL2A1, VCAN, and ACAN was dependent on the cellular source. This study shows that hypoxia, induced by CoCl2 treatment, can differently influence the behavior of MSCs, isolated from different sources, in their chondrogenic potential. These findings should be taken into consideration in the treatment of cartilage repair and regeneration based on stem cell therapies.
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Zhang M, Gao CE, Chen WL, Tang YY, Nie JY, Shen LD, Ma X, Chen DD. Opposite response to hypoxia by breast cancer cells between cell proliferation and cell migration: A clue from microRNA expression profile. Oncol Lett 2017; 15:2771-2780. [PMID: 29435003 PMCID: PMC5778814 DOI: 10.3892/ol.2017.7636] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 05/11/2017] [Indexed: 12/20/2022] Open
Abstract
The majority of tumors possess the features of hypoxia. It is generally accepted that hypoxia is a negative prognostic factor for cancer. Low levels of oxygen are able to modify basic cell metabolism status. Elucidating the basic response, including cell proliferation and migration, to hypoxia by cancer cells is important for understanding the role of hypoxia in the development of cancer. In the present study, CoCl2 stimulation was used to simulate hypoxia. A microRNA (miRNA/miR) array was used to systematically detect the changes in miRNA expression profiles. Following treatment with CoCl2 for 12 h, 15 miRNAs were markedly upregulated and 10 miRNAs were markedly decreased compared with the control. After 24 h CoCl2 incubation, 15 miRNAs were increased and 3 miRNAs were decreased compared with the control. Among them, 7 miRNAs were upregulated and 2 miRNAs were downregulated at 12 and 24 h following CoCl2 stimulation. The potential roles of these miRNA were reviewed and it was identified that the majority of them are associated with cell proliferation and migration. Additional experiments demonstrated that CoCl2 incubation inhibited the proliferation of MCF-7 cells but promoted cell migration. miR-491 may be a key miRNA for hypoxia-inhibited cell proliferation, as it was identified that hypoxia induced the downregulation of B-cell lymphoma-extra large in a miR-491-dependent manner. As the target of miR-302a, CXCR4 may be a key protein for hypoxia-promoted cell migration. In the present study, it was identified that in the early stage of hypoxia, cell proliferation was inhibited but cell migration was promoted. These results support the hypothesis that hypoxia may be a driving force for tumor cell escape from the primary tumor site to other organs, or other sites of the same organ.
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Affiliation(s)
- Ming Zhang
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan, Kunming, Yunnan 650118, P.R. China
| | - Chang-E Gao
- Department of Medical Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Wen-Lin Chen
- Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan, Kunming, Yunnan 650118, P.R. China
| | - Yi-Yin Tang
- Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan, Kunming, Yunnan 650118, P.R. China
| | - Jian-Yun Nie
- Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan, Kunming, Yunnan 650118, P.R. China
| | - Li-Da Shen
- Department of Medical Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Xiang Ma
- Department of Orthopedics, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan, Kunming, Yunnan 650118, P.R. China
| | - De-Dian Chen
- Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Tumor Hospital of Yunnan, Kunming, Yunnan 650118, P.R. China
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Mu S, Guo S, Wang X, Zhan Y, Li Y, Jiang Y, Zhang R, Zhang B. Effects of deferoxamine on the osteogenic differentiation of human periodontal ligament cells. Mol Med Rep 2017; 16:9579-9586. [PMID: 29039615 DOI: 10.3892/mmr.2017.7810] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 08/17/2017] [Indexed: 11/06/2022] Open
Abstract
Hypoxia regulates a number of cell biological processes, including cell survival, development and differentiation. Deferoxamine (DFO), an oral chelator for blood transfusion patients, has been demonstrated to induce hypoxia and is frequently used as a hypoxia‑mimicking agent. The purpose of the present study was to investigate the influence of DFO on the proliferation, migration and osteogenic differentiation of human periodontal ligament cells (hPDLCs). The effects of DFO on hPDLC viability and migration were measured using an MTT and wound healing assay. To characterize the hypoxia microenvironment, the expression of hypoxia‑inducible factor‑1α (HIF‑1α) in hPDLCs treated with DFO was quantified using the reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR). Subsequently, the osteogenic differentiation potential of DFO was determined by RT‑qPCR of the mRNA of osteogenic markers (runt‑related transcription factor 2 [Runx‑2], osteopontin [OPN] and collagen type I [Col‑1]). The alkaline phosphatase activity and mineral deposition were analyzed using alizarin red S staining. The MTT and wound healing assays demonstrated that low‑concentrations of DFO had little impact on hPDLC viability and migration 48 h into the treatment. DFO upregulated the expression of hPDLC genes specific for osteogenic differentiation: HIF‑1α, Runx‑2, OPN and Col‑1. Furthermore, formation of mineralized nodules was enhanced by DFO. The present study suggests that DFO provided favorable culture conditions to promote the osteogenic differentiation and mineralization of hPDLCs. The mechanism underlying these alterations remains to be elucidated.
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Affiliation(s)
- Sen Mu
- Department of Periodontology and Oral Mucosa, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Shuanlong Guo
- Department of Stomatology, Fenyang Hospital, Fenyang, Shanxi 032200, P.R. China
| | - Xiang Wang
- Department of General Dentistry, Yinzhou Stomatology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Yuanbo Zhan
- Institute of Hard Tissue Development and Regeneration, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Ying Li
- Institute of Hard Tissue Development and Regeneration, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Ying Jiang
- Pediatric Department of Stomatology, Yinzhou Stomatology Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Ruimin Zhang
- Department of Periodontology and Oral Mucosa, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Bin Zhang
- Institute of Hard Tissue Development and Regeneration, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
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Role of Mesenchymal Stem Cells in Cancer Development and Their Use in Cancer Therapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1083:45-62. [DOI: 10.1007/5584_2017_64] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Kheirandish M, Gavgani SP, Samiee S. The effect of hypoxia preconditioning on the neural and stemness genes expression profiling in human umbilical cord blood mesenchymal stem cells. Transfus Apher Sci 2017; 56:392-399. [PMID: 28428031 DOI: 10.1016/j.transci.2017.03.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 03/09/2017] [Accepted: 03/21/2017] [Indexed: 12/20/2022]
Abstract
In recent years, human umbilical cord blood-derived mesenchymal stem cell (hUB-MSCs) has been regarded as an alternative source for stem cell therapy. In this study, we evaluated the effect of hypoxia preconditioning (HPC) on the expression of Nt-3, GFAP, Nestin, Oct-4 and Nanog genes and proliferative capacity of hUB-MSCs in comparison with normoxic conditions. HPC+Hypoxia protocol includes cultured hUB-MSCs for 15min at 2.5% O2 and after that reoxygenation for 30min at 21% O2 (HPC), and then hypoxia preconditioned hUB-MSCs subjected to 2.5% O2 for 72h (Hypoxia). Conclusively, the results showed that hypoxic preconditioning is an effective strategy for enhancing proliferation capacity of hUB-MSCs, and also can trigger expression of some of the neural genes. In addition, the concept of involvement of oxygen tension in the expression of some of the neural genes of hUB-MSCs would be a good sign of enhanced neural differentiation potential in vitro.
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Affiliation(s)
- Maryam Kheirandish
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran.
| | - Somaie Piri Gavgani
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Shahram Samiee
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
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Laksana K, Sooampon S, Pavasant P, Sriarj W. Cobalt Chloride Enhances the Stemness of Human Dental Pulp Cells. J Endod 2017; 43:760-765. [PMID: 28343926 DOI: 10.1016/j.joen.2017.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 12/16/2016] [Accepted: 01/04/2017] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Hypoxia is a factor in controlling stem cell stemness. We investigated if cobalt chloride (CoCl2), a chemical agent that mimics hypoxia in vitro, affected human dental pulp cell (hDPC) stemness by examining cell proliferation, stem cell marker expression, and osteogenic differentiation. METHODS hDPCs were cultured with or without 25 or 50 μmol/L CoCl2. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to determine cell proliferation. The number of STRO-1+ cells was determined by flow cytometry. The messenger RNA expression of the stem cell markers REX1, OCT4, SOX2, and NANOG and the osteogenic-associated genes ALP, COLI, and RUNX2 were evaluated using reverse transcription polymerase chain reaction or real-time polymerase chain reaction. Osteogenic differentiation was assessed by alkaline phosphatase (ALP) activity and mineralization assays. RESULTS Although 25 and 50 μmol/L CoCl2 suppressed hDPC proliferation, 50 μmol/L CoCl2 increased the number of STRO-1+ cells. Moreover, CoCl2 dose dependently induced stem cell marker expression. Additionally, CoCl2 treatment suppressed osteogenic-associated gene expression, ALP activity, and calcium deposition. The addition of apigenin, a hypoxia-inducible factor 1-alpha inhibitor, reversed the inhibitory effect of CoCl2 on ALP activity. CONCLUSIONS This study indicated that CoCl2 may enhance hDPC stemness.
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Affiliation(s)
- Kantaporn Laksana
- Department of Pediatric Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sireerat Sooampon
- Department of Pharmacology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Prasit Pavasant
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Wannakorn Sriarj
- Department of Pediatric Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
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Goldberg L, Abutbul-Amitai M, Paret G, Nevo-Caspi Y. Alternative Splicing of STAT3 Is Affected by RNA Editing. DNA Cell Biol 2017; 36:367-376. [PMID: 28278381 DOI: 10.1089/dna.2016.3575] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
A-to-I RNA editing, carried out by adenosine deaminase acting on RNA (ADAR) enzymes, is an epigenetic phenomenon of posttranscriptional modifications on pre-mRNA. RNA editing in intronic sequences may influence alternative splicing of flanking exons. We have previously shown that conditions that induce editing result in elevated expression of signal transducer and activator of transcription 3 (STAT3), preferentially the alternatively-spliced STAT3β isoform. Mechanisms regulating alternative splicing of STAT3 have not been elucidated. STAT3 undergoes A-to-I RNA editing in an intron residing in proximity to the alternatively spliced exon. We hypothesized that RNA editing plays a role in regulating alternative splicing toward STAT3β. In this study we extend our observation connecting RNA editing to the preferential induction of STAT3β expression. We study the involvement of ADAR1 in STAT3 editing and reveal the connection between editing and alternative splicing of STAT3. Deferoaxamine treatment caused the induction in STAT3 RNA editing and STAT3β expression. Silencing ADAR1 caused a decrease in STAT3 editing and expression with a preferential decrease in STAT3β. Cells transfected with a mutated minigene showed preferential splicing toward the STAT3β transcript. Editing in the STAT3 intron is performed by ADAR1 and affects STAT3 alternative splicing. These results suggest that RNA editing is one of the molecular mechanisms regulating the expression of STAT3β.
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Affiliation(s)
- Lior Goldberg
- 1 Department of Pediatric Critical Care Medicine, Safra Children's Hospital, Sheba Medical Center , Tel Hashomer, Israel .,2 Sackler Medical School, Tel-Aviv University , Tel-Aviv, Israel
| | - Mor Abutbul-Amitai
- 1 Department of Pediatric Critical Care Medicine, Safra Children's Hospital, Sheba Medical Center , Tel Hashomer, Israel .,2 Sackler Medical School, Tel-Aviv University , Tel-Aviv, Israel
| | - Gideon Paret
- 1 Department of Pediatric Critical Care Medicine, Safra Children's Hospital, Sheba Medical Center , Tel Hashomer, Israel .,2 Sackler Medical School, Tel-Aviv University , Tel-Aviv, Israel
| | - Yael Nevo-Caspi
- 1 Department of Pediatric Critical Care Medicine, Safra Children's Hospital, Sheba Medical Center , Tel Hashomer, Israel
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Novel therapeutic core-shell hydrogel scaffolds with sequential delivery of cobalt and bone morphogenetic protein-2 for synergistic bone regeneration. Acta Biomater 2015; 23:295-308. [PMID: 26054564 DOI: 10.1016/j.actbio.2015.06.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/05/2015] [Accepted: 06/01/2015] [Indexed: 11/21/2022]
Abstract
Enabling early angiogenesis is a crucial issue in the success of bone tissue engineering. Designing scaffolds with therapeutic potential to stimulate angiogenesis as well as osteogenesis is thus considered a promising strategy. Here, we propose a novel scaffold designed to deliver angiogenic and osteogenic factors in a sequential manner to synergize the bone regeneration event. Hydrogel fibrous scaffolds comprised of a collagen-based core and an alginate-based shell were constructed. Bone morphogenetic protein 2 (BMP2) was loaded in the core, while the shell incorporated Co ions, enabled by the alginate crosslinking in CoCl2/CaCl2 solution. The incorporation of Co ions was tunable by altering the concentration of Co ions in the crosslinking solution. The incorporated Co ions, that are known to play a role in angiogenesis, were released rapidly within a week, while the BMP2, acting as an osteogenic factor, was released in a highly sustainable manner over several weeks to months. The release of Co ions significantly up-regulated the in vitro angiogenic properties of cells, including the expression of angiogenic genes (CD31, VEGF, and HIF-1α), secretion of VEGF, and the formation of tubule-like networks. However, BMP2 did not activate the angiogenic processes. Osteogenesis was also significantly enhanced by the release of Co ions as well as BMP2, characterized by higher expression of osteogenic genes (OPN, ALP, BSP, and OCN), and OCN protein secretion. An in vivo study on the designed scaffolds implanted in rat calvarium defect demonstrated significantly enhanced bone formation, evidenced by new bone volume and bone density, due to the release of BMP2 and Co ions. This is the first study using Co ions as an angiogenic element together with the osteogenic factor BMP2 within scaffolds, and the results demonstrated the possible synergistic role of Co ions with BMP2 in the bone regeneration process, suggesting a novel potential therapeutic scaffold system. STATEMENT OF SIGNIFICANCE This is the first report that utilizes Co ion as a pro-angiogenic factor in concert with osteogenic factor BMP-2 in the fine-tuned core-shell hydrogel fiber scaffolds, and ultimately achieves osteo/angiogenesis of MSCs and bone regeneration through the sequential delivery of both biofactors. This novel approach facilitates a new class of therapeutic scaffolds, aiming at successful bone regeneration with the help of angiogenesis.
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Li CF, Chen LB, Li DD, Yang L, Zhang BG, Jin JP, Zhang Y, Zhang B. Dual‑sensitive HRE/Egr1 promoter regulates Smac overexpression and enhances radiation‑induced A549 human lung adenocarcinoma cell death under hypoxia. Mol Med Rep 2014; 10:1108-16. [PMID: 24842518 DOI: 10.3892/mmr.2014.2233] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 04/04/2014] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to construct an expression vector carrying the hypoxia/radiation dual‑sensitive chimeric hypoxia response element (HRE)/early growth response 1 (Egr‑1) promoter in order to overexpress the therapeutic second mitochondria‑derived activator of caspases (Smac). Using this expression vector, the present study aimed to explore the molecular mechanism underlying radiotherapy‑induced A549 human lung adenocarcinoma cell death and apoptosis under hypoxia. The plasmids, pcDNA3.1‑Egr1‑Smac (pE‑Smac) and pcDNA3.1‑HRE/Egr-1‑Smac (pH/E‑Smac), were constructed and transfected into A549 human lung adenocarcinoma cells using the liposome method. CoCl2 was used to chemically simulate hypoxia, followed by the administration of 2 Gy X‑ray irradiation. An MTT assay was performed to detect cell proliferation and an Annexin V‑fluorescein isothiocyanate apoptosis detection kit was used to detect apoptosis. Quantitative polymerase chain reaction and western blot analyses were used for the detection of mRNA and protein expression, respectively. Infection with the pE‑Smac and pH/E‑Smac plasmids in combination with radiation and/or hypoxia was observed to enhance the expression of Smac. Furthermore, Smac overexpression was found to enhance the radiation‑induced inhibition of cell proliferation and promotion of cycle arrest and apoptosis. The cytochrome c/caspase‑9/caspase‑3 pathway was identified to be involved in this regulation of apoptosis. Plasmid infection in combination with X‑ray irradiation was found to markedly induce cell death under hypoxia. In conclusion, the hypoxia/radiation dual‑sensitive chimeric HRE/Egr‑1 promoter was observed to enhance the expression of the therapeutic Smac, as well as enhance the radiation‑induced inhibition of cell proliferation and promotion of cycle arrest and apoptosis under hypoxia. This apoptosis was found to involve the mitochondrial pathway.
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Affiliation(s)
- Chang-Feng Li
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Li-Bo Chen
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Dan-Dan Li
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Lei Yang
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Bao-Gang Zhang
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Jing-Peng Jin
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Ying Zhang
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Bin Zhang
- Endoscopy Center, China‑Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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Zeng HL, Qin YL, Chen HZ, Bu QQ, Li Y, Zhong Q, Han XA, Chen J, Yu PX, Liu GX. Effects of Nicotine on Proliferation and Survival in Human Umbilical Cord Mesenchymal Stem Cells. J Biochem Mol Toxicol 2014; 28:181-9. [PMID: 24488958 DOI: 10.1002/jbt.21551] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 12/20/2013] [Accepted: 01/04/2014] [Indexed: 12/21/2022]
Affiliation(s)
- Hui-Lan Zeng
- Department of Hematology; The First Affiliated Hospital of Jinan University; Guangzhou 510630 People's Republic of China
| | - Yong-Liang Qin
- Department of Hematology; People's Hospital of Jiang Men; JiangMen 529000 Guangdong Province People's Republic of China
| | - Hui-Zhong Chen
- Medical College of Jinan University; Guangzhou 510630 People's Republic of China
| | - Qian-Qian Bu
- Department of Hematology; The First Affiliated Hospital of Jinan University; Guangzhou 510630 People's Republic of China
| | - Yang Li
- Department of Hematology; The First Affiliated Hospital of Jinan University; Guangzhou 510630 People's Republic of China
| | - Qi Zhong
- Department of Hematology; Guangdong No.2 Provincial People's Hospital; Guangzhou 510317 People's Republic of China
| | - Xin-Ai Han
- Department of Rheumatology; The Third Affiliated Hospital of Southern Medical University; Guangzhou 510630 People's Republic of China
| | - Jie Chen
- Department of Urological Surgery; The First Affiliated Hospital of Jinan University; Guangzhou 510630 People's Republic of China
| | - Pan-Xi Yu
- Medical College of Jinan University; Guangzhou 510630 People's Republic of China
| | - Ge-Xiu Liu
- Medical College of Jinan University; Guangzhou 510630 People's Republic of China
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Song D, Li Y, Cao J, Han Z, Gao L, Xu Z, Yin Z, Wang G, Fan Y, Wang C. Effect of iron deficiency on c-kit⁺ cardiac stem cells in vitro. PLoS One 2013; 8:e65721. [PMID: 23762416 PMCID: PMC3677875 DOI: 10.1371/journal.pone.0065721] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 04/27/2013] [Indexed: 12/05/2022] Open
Abstract
AIM Iron deficiency is a common comorbidity in chronic heart failure (CHF) which may exacerbate CHF. The c-kit⁺ cardiac stem cells (CSCs) play a vital role in cardiac function repair. However, much is unknown regarding the role of iron deficiency in regulating c-kit⁺ CSCs function. In this study, we investigated whether iron deficiency regulates c-kit⁺ CSCs proliferation, migration, apoptosis, and differentiation in vitro. METHOD All c-kit⁺ CSCs were isolated from adult C57BL/6 mice. The c-kit⁺ CSCs were cultured with deferoxamine (DFO, an iron chelator), mimosine (MIM, another iron chelator), or a complex of DFO and iron (Fe(III)), respectively. Cell migration was assayed using a 48-well chamber system. Proliferation, cell cycle, and apoptosis of c-kit⁺ CSCs were analyzed with BrdU labeling, population doubling time assay, CCK-8 assay, and flow cytometry. Caspase-3 protein level and activity were examined with Western blotting and spectrophotometric detection. The changes in the expression of cardiac-specific proteins (GATA-4,TNI, and β-MHC) and cell cycle-related proteins (cyclin D1, RB, and pRB) were detected with Western blotting. RESULT DFO and MIM suppressed c-kit⁺ CSCs proliferation and differentiation. They also modulated cell cycle and cardiac-specific protein expression. Iron chelators down-regulated the expression and phosphorylation of cell cycle-related proteins. Iron reversed those suppressive effects of DFO. DFO and MIM didn't affect c-kit⁺ CSCs migration and apoptosis. CONCLUSION Iron deficiency suppressed proliferation and differentiation of c-kit⁺ CSCs. This may partly explain how iron deficiency affects CHF prognosis.
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Affiliation(s)
- Dongqiang Song
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Yuanmin Li
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Jiatian Cao
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Zhihua Han
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Lin Gao
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Zuojun Xu
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Zhaofang Yin
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Guifang Wang
- Shanghai Key Laboratory of Stomatology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Yuqi Fan
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
| | - Changqian Wang
- Department of Cardiology, Ninth People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai, PR China
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Salehinejad P, Alitheen NB, Mandegary A, Nematollahi-mahani SN, Janzamin E. Effect of EGF and FGF on the expansion properties of human umbilical cord mesenchymal cells. In Vitro Cell Dev Biol Anim 2013; 49:515-23. [DOI: 10.1007/s11626-013-9631-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 04/29/2013] [Indexed: 12/13/2022]
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Maia L, Landim-Alvarenga FC, Da Mota LSLS, De Assis Golim M, Laufer-Amorim R, De Vita B, Barberini DJ, Listoni AJ, De Moraes CN, Heckler MCT, Amorim RM. Immunophenotypic, immunocytochemistry, ultrastructural, and cytogenetic characterization of mesenchymal stem cells from equine bone marrow. Microsc Res Tech 2013; 76:618-24. [DOI: 10.1002/jemt.22208] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/01/2013] [Accepted: 03/01/2013] [Indexed: 12/21/2022]
Affiliation(s)
- Leandro Maia
- Department of Veterinary Clinics; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | - Fernanda C. Landim-Alvarenga
- Department of Animal Reproduction and Veterinary Radiology; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | | | - Marjorie De Assis Golim
- Hemocenter Division of Botucatu Medical School; São Paulo State University, Botucatu; São Paulo, Brazil
| | - Reneé Laufer-Amorim
- Department of Veterinary Clinics; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | - Bruna De Vita
- Department of Animal Reproduction and Veterinary Radiology; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | - Danielle Jaqueta Barberini
- Department of Veterinary Clinics; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | - Amanda Jeronimo Listoni
- Department of Veterinary Clinics; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | - Carolina Nogueira De Moraes
- Department of Animal Reproduction and Veterinary Radiology; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | - Marta Cristina Thomas Heckler
- Department of Veterinary Clinics; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
| | - Rogério Martins Amorim
- Department of Veterinary Clinics; College of Veterinary Medicine and Animal Science, São Paulo State University, Botucatu; São Paulo, Brazil
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Shell K, Raabe O, Freitag C, Ohrndorf A, Christ HJ, Wenisch S, Arnhold S. Comparison of Equine Adipose Tissue-Derived Stem Cell Behavior and Differentiation Potential Under the Influence of 3% and 21% Oxygen Tension. J Equine Vet Sci 2013. [DOI: 10.1016/j.jevs.2012.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Shahali M, Kabir-Salmani M, Nayernia K, Soleimanpour-Lichaei HR, Vasei M, Mowla SJ, Ranaie E, Shakibaie M, Modaresi MH. A novel in vitro model for cancer stem cell culture using ectopically expressed piwil2 stable cell line. CELL JOURNAL 2013; 15:250-7. [PMID: 24027667 PMCID: PMC3769608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 01/07/2013] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Piwil2, a member of Ago/Piwi gene family containing Piwi and PAZ domains, has been shown to be ectopically expressed in different cancer cells, especially its remarkable expression in cancer stem cells (CSCs), and is also known to be essential for germ line stem cell self-renewal in various organisms. The hypothesis that CSC may hold the key to the central problem of clinical oncology and tumor relapse leads to more anticancer treatment studies. Due to emerging controversies and extreme difficulties in studying of CSC, like the cells using in vivo models, more attempts have expended to establish different in vitro models. However, the progress was slow owing to the problems associated with establishing proper CSC cultures in vitro. To overcome these difficulties, we prompted to establish a novel stable cell line over-expressing Piwil2 to develop a potential proper in vitro CSC model. MATERIALS AND METHODS In this experimental study, mouse embryonic fibroblasts (MEFs) were isolated and electroporated with a construct containing Piwil2 cDNA under the control of the cytomegalovirus promoter (CMV). Stable transfectants were selected, and the established MEF-Piwil2 cell line was characterized and designated as CSC-like cells using molecular markers. Functional assays, including proliferation, migration, and invasion assays were performed using characterized CSC like cells in serum-free medium. Additionally, MEF-Piwil2 cell density and viability were measured by direct and indirect methods in normoxic and hypoxic conditions. RESULTS The results of reverse transcriptase-polymerase chain reaction (RT-PCR), western blot, and immunocytochemistry revealed an overexpression for Piwil2 in the transfected Piwil2 cells both in the RNA and protein levels. Furthermore, analysis of the kinetic and stoichiometric parameters demonstrated that the specific growth rate and the yield of lactate per glucose were significantly higher in the MEF-Piwil2 group compared to the MEF cells (ANOVA, p< 0.05). Also, analysis of functional assays including migration and invasion assays demonstrated a significantly higher number of migrated and invaded cells in the MEF-Piwil2 compared to that of the MEF cells (ANOVA, p< 0.05). The MEF-Piwil2 cells tolerated hypoxia mimetic conditions (CoCl2 ) with more than 95% viability. CONCLUSION According to the molecular and functional studies, it has been realized that Piwil2 plays a key role(s) in tumor initiation, progression and metastasis. Therefore, Piwil2 can be used not only as a common biomarker for tumor, but also as a target for the development of new anticancer drug. Finally, the main outcome of our study was the establishment of a novel CSC-like in vitro model which is expected to be utilized in understanding the complex roles played by CSC in tumor maintenance, metastasis, therapy resistance or cancer relapse.
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Affiliation(s)
- Maryam Shahali
- Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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* Corresponding Address: P.O.Box: : 14115-154Department of Molecular GeneticsFaculty of Biological SciencesTarbiat Modares UniversityTehranIran
| | - Maryam Kabir-Salmani
- Department of Medical Biotechnology, Stem Cell Division, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
,P.O.Box: 14965-161Department of Medical BiotechnologyStem Cell DivisionNational Institute of Genetic
Engineering and BiotechnologyTehranIran
| | | | - Hamid Reza Soleimanpour-Lichaei
- Department of Medical Biotechnology, Stem Cell Division, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Mohammad Vasei
- Department of Pathology, Faculty of Medicine, Shariati Hospital, Tehran University of Medicine Science, Tehran, Iran
| | - Seyed Javad Mowla
- Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ehsan Ranaie
- Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mehdi Shakibaie
- Department of Medical Biotechnology, Stem Cell Division, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Mohammad Hossein Modaresi
- Department of Medical Genetics, Faculty of Medicine, Tehran University of Medicine Science, Tehran, Iran
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Ranera B, Remacha AR, Álvarez-Arguedas S, Romero A, Vázquez FJ, Zaragoza P, Martín-Burriel I, Rodellar C. Effect of hypoxia on equine mesenchymal stem cells derived from bone marrow and adipose tissue. BMC Vet Res 2012; 8:142. [PMID: 22913590 PMCID: PMC3483288 DOI: 10.1186/1746-6148-8-142] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 08/13/2012] [Indexed: 12/31/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) derived from bone marrow (BM-MSCs) and adipose tissue (AT-MSCs) are being applied to equine cell therapy. The physiological environment in which MSCs reside is hypoxic and does not resemble the oxygen level typically used in in vitro culture (20% O2). This work compares the growth kinetics, viability, cell cycle, phenotype and expression of pluripotency markers in both equine BM-MSCs and AT-MSCs at 5% and 20% O2. Results At the conclusion of culture, fewer BM-MSCs were obtained in hypoxia than in normoxia as a result of significantly reduced cell division. Hypoxic AT-MSCs proliferated less than normoxic AT-MSCs because of a significantly higher presence of non-viable cells during culture. Flow cytometry analysis revealed that the immunophenotype of both MSCs was maintained in both oxygen conditions. Gene expression analysis using RT-qPCR showed that statistically significant differences were only found for CD49d in BM-MSCs and CD44 in AT-MSCs. Similar gene expression patterns were observed at both 5% and 20% O2 for the remaining surface markers. Equine MSCs expressed the embryonic markers NANOG, OCT4 and SOX2 in both oxygen conditions. Additionally, hypoxic cells tended to display higher expression, which might indicate that hypoxia retains equine MSCs in an undifferentiated state. Conclusions Hypoxia attenuates the proliferative capacity of equine MSCs, but does not affect the phenotype and seems to keep them more undifferentiated than normoxic MSCs.
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Affiliation(s)
- Beatriz Ranera
- Laboratorio de Genética Bioquímica, Facultad de Veterinaria, Universidad de Zaragoza, 50013 Zaragoza, Spain
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Abd El Aziz DH, Metwally HG. Effect of stem cell therapy on amiodarone-induced liver injury in albino rats. THE EGYPTIAN JOURNAL OF HISTOLOGY 2012; 35:272-282. [DOI: 10.1097/01.ehx.0000414591.19244.e3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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