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Jiang N, Tian X, Wang Q, Hao J, Jiang J, Wang H. Regulation Mechanisms and Maintenance Strategies of Stemness in Mesenchymal Stem Cells. Stem Cell Rev Rep 2024; 20:455-483. [PMID: 38010581 DOI: 10.1007/s12015-023-10658-3] [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] [Accepted: 11/16/2023] [Indexed: 11/29/2023]
Abstract
Stemness pertains to the intrinsic ability of mesenchymal stem cells (MSCs) to undergo self-renewal and differentiate into multiple lineages, while simultaneously impeding their differentiation and preserving crucial differentiating genes in a state of quiescence and equilibrium. Owing to their favorable attributes, including uncomplicated isolation protocols, ethical compliance, and ease of procurement, MSCs have become a focal point of inquiry in the domains of regenerative medicine and tissue engineering. As age increases or ex vivo cultivation is prolonged, the functionality of MSCs decreases and their stemness gradually diminishes, thereby limiting their potential therapeutic applications. Despite the existence of several uncertainties surrounding the comprehension of MSC stemness, considerable advancements have been achieved in the clarification of the potential mechanisms that lead to stemness loss, as well as the associated strategies for stemness maintenance. This comprehensive review provides a systematic overview of the factors influencing the preservation of MSC stemness, the molecular mechanisms governing it, the strategies for its maintenance, and the therapeutic potential associated with stemness. Finally, we underscore the obstacles and prospective avenues in present investigations, providing innovative perspectives and opportunities for the preservation and therapeutic utilization of MSC stemness.
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Affiliation(s)
- Nizhou Jiang
- Central Hospital of Dalian University of Technology Department of Spine Surgery, Dalian, China
- The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiliang Tian
- The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Quanxiang Wang
- Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, China
| | - Jiayu Hao
- Central Hospital of Dalian University of Technology Department of Spine Surgery, Dalian, China
| | - Jian Jiang
- Central Hospital of Dalian University of Technology Department of Spine Surgery, Dalian, China.
| | - Hong Wang
- Central Hospital of Dalian University of Technology Department of Spine Surgery, Dalian, China.
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2
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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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Wang M, Shi Y, Guo Y, Chen Y, Zhao C, Zhou Y, Xiao Y, Wang Y, Zhang S, Jin B, Wu Z, Zhao G. Nonadiabatic dynamics Mechanisms of natural UV Photoprotection ompounds chlorogenic acid and isochlorogenic acid a: Double conjugated structures but single photoexcited channel. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114725] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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4
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Lopez Perez R, Brauer J, Rühle A, Trinh T, Sisombath S, Wuchter P, Grosu AL, Debus J, Saffrich R, Huber PE, Nicolay NH. Human mesenchymal stem cells are resistant to UV-B irradiation. Sci Rep 2019; 9:20000. [PMID: 31882818 PMCID: PMC6934474 DOI: 10.1038/s41598-019-56591-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 12/09/2019] [Indexed: 12/19/2022] Open
Abstract
Albeit being an effective therapy for various cutaneous conditions, UV-B irradiation can cause severe skin damage. While multipotent mesenchymal stem cells (MSCs) may aid the regeneration of UV-B-induced skin injuries, the influence of UV-B irradiation on MSCs remains widely unknown. Here, we show that human MSCs are relatively resistant to UV-B irradiation compared to dermal fibroblasts. MSCs exhibited higher clonogenic survival, proliferative activity and viability than dermal fibroblasts after exposure to UV-B irradiation. Cellular adhesion, morphology and expression of characteristic surface marker patterns remained largely unaffected in UV-irradiated MSCs. The differentiation ability along the adipogenic, osteogenic and chondrogenic lineages was preserved after UV-B treatment. However, UV-B radiation resulted in a reduced ability of MSCs and dermal fibroblasts to migrate. MSCs exhibited low apoptosis rates after UV-B irradiation and repaired UV-B-induced cyclobutane pyrimidine dimers more efficiently than dermal fibroblasts. UV-B irradiation led to prolonged p53 protein stability and increased p21 protein expression resulting in a prolonged G2 arrest and senescence induction in MSCs. The observed resistance may contribute to the ability of these multipotent cells to aid the regeneration of UV-B-induced skin injuries.
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Affiliation(s)
- Ramon Lopez Perez
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany
| | - Jannek Brauer
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany
- Department of Radiation Oncology, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Alexander Rühle
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany
- Department of Radiation Oncology, University of Freiburg - Medical Center, 79106, Freiburg, Germany
| | - Thuy Trinh
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany
- Department of Radiation Oncology, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Sonevisay Sisombath
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany
| | - Patrick Wuchter
- Institute of Transfusion Medicine and Immunology, German Red Cross Blood Service Baden-Württemberg - Hessen, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Anca-Ligia Grosu
- Department of Radiation Oncology, University of Freiburg - Medical Center, 79106, Freiburg, Germany
| | - Jürgen Debus
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany
- Department of Radiation Oncology, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Rainer Saffrich
- Institute of Transfusion Medicine and Immunology, German Red Cross Blood Service Baden-Württemberg - Hessen, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Peter E Huber
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany
- Department of Radiation Oncology, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Nils H Nicolay
- Department of Molecular Radiation Oncology, German Cancer Research Center (dkfz), 69120, Heidelberg, Germany.
- Department of Radiation Oncology, University of Freiburg - Medical Center, 79106, Freiburg, Germany.
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Godar DE, Gurunathan C, Ilev I. 3D Bioprinting with UVA1 Radiation and Photoinitiator Irgacure 2959: Can the ASTM Standard L929 Cells Predict Human Stem Cell Cytotoxicity? Photochem Photobiol 2018; 95:581-586. [DOI: 10.1111/php.13028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 09/06/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Dianne E. Godar
- Food and Drug Administration Center for Devices and Radiological Health Silver Spring MD
| | | | - Ilko Ilev
- Food and Drug Administration Center for Devices and Radiological Health Silver Spring MD
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Park SH, Cho JY, Oh SW, Kang M, Lee SE, Yoo JA, Jung K, Lee J, Lee SY, Lee J. Arctigenin protects against ultraviolet-A-induced damage to stemness through inhibition of the NF-κB/MAPK pathway. Chem Biol Interact 2018; 282:63-68. [PMID: 29317250 DOI: 10.1016/j.cbi.2018.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 10/15/2017] [Accepted: 01/05/2018] [Indexed: 12/28/2022]
Abstract
The stemness of stem cells is negatively affected by ultraviolet A (UVA) irradiation. This study was performed to examine the effects of arctigenin on UVA-irradiation-induced damage to the stemness of human mesenchymal stem cells (hMSCs) derived from adipose tissue. The mechanisms of action of arctigenin were also investigated. A BrdU-incorporation assay demonstrated that arctigenin attenuated the UVA-induced reduction of the cellular proliferative potential. Arctigenin also increased the UVA-induced reduction in stemness of hMSCs by upregulating stemness-related genes such as SOX2, OCT4, and NANOG. In addition, the UVA-induced reduction in the mRNA expression level of hypoxia-inducible factor (HIF)-1α was significantly recovered by arctigenin. The antagonizing effect of arctigenin on UVA irradiation was mediated by reduced PGE2 production through the inhibition of MAPKs (p42/44 MAPK, p38 MAPK, and JNK) and NF-κB. Overall, these findings suggest that arctigenin can ameliorate the reduced stemness of hMSCs induced by UVA irradiation. The effects of arctigenin are mediated by PGE2-cAMP signaling-dependent upregulation of HIF-1α. Therefore, arctigenin could be used as an antagonist to attenuate the effects of UVA irradiation.
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Affiliation(s)
- See-Hyoung Park
- Department of Bio and Chemical Engineering, Hongik University, 300-16 Sejong City, Republic of Korea
| | - Jae Youl Cho
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19 Gyunggi Do, Republic of Korea
| | - Sae Woong Oh
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19 Gyunggi Do, Republic of Korea
| | - Mingyeong Kang
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19 Gyunggi Do, Republic of Korea
| | - Seung Eun Lee
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19 Gyunggi Do, Republic of Korea
| | - Ju Ah Yoo
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19 Gyunggi Do, Republic of Korea
| | - Kwangseon Jung
- Skincure Life Science Institute, Seongnam City, 132-16 Gyunggi Do, Republic of Korea
| | - Jienny Lee
- Viral Disease Research Division, Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gimcheon-si, 39660 Gyeongsangbuk-do, Republic of Korea
| | - Sang Yeol Lee
- Department of Life Science, Gachon University, San 65, Bokjeong-Dong, Sujeong-Gu, Seongnam-Si, 131-20 Gyunggi Do, Republic of Korea.
| | - Jongsung Lee
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon City, 164-19 Gyunggi Do, Republic of Korea.
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7
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Stemness and differentiation potential-recovery effects of sinapic acid against ultraviolet-A-induced damage through the regulation of p38 MAPK and NF-κB. Sci Rep 2017; 7:909. [PMID: 28424532 PMCID: PMC5430417 DOI: 10.1038/s41598-017-01089-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 03/23/2017] [Indexed: 12/11/2022] Open
Abstract
Ultraviolet A (UVA) irradiation exerts negative effects on stemness and differentiation potential of stem cells. This study aimed to explore the effect of sinapic acid on UVA-irradiation-induced damages to stemness and differentiation potential of human-adipose-tissue-derived mesenchymal stem cells (hAMSCs) and its UVA-antagonist mechanisms. Sinapic acid attenuated UVA-induced reduction in the proliferative potential and stemness by upregulating OCT4, SOX2, and NANOG. In addition, sinapic acid significantly recovered UVA-induced reduction in expression level of hypoxia-inducible factor (HIF)-1α. The antagonist effect of sinapic acid against stemness damage was mediated by reduceing PGE2 production through inhibition of p38 MAPK and NF-κB. Moreover, sinapic acid attenuated UVA-induced reduction in differentiation potential by downregulating the expression of macrophage migration inhibitory factor (MIF) and Kruppel-like factor (KLF) 2 gene while activating AMP-activated protein kinase (AMPK). UVA-induced inhibition of adipogenic differentiation was mediated by reducing MIF production through suppression of NF-κB. Taken together, these findings suggest that sinapic acid may ameliorate UVA-irradiation-induced reduced stemness and differentiation potential of hAMSCs. Therefore, sinapic acid might have potential as an antagonist agent to attenuate damages caused by UVA.
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8
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Vanillin attenuates negative effects of ultraviolet A on the stemness of human adipose tissue-derived mesenchymal stem cells. Food Chem Toxicol 2016; 96:62-9. [DOI: 10.1016/j.fct.2016.07.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 07/18/2016] [Accepted: 07/21/2016] [Indexed: 12/16/2022]
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9
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Kruglikov IL, Scherer PE. Skin aging: are adipocytes the next target? Aging (Albany NY) 2016; 8:1457-69. [PMID: 27434510 PMCID: PMC4993342 DOI: 10.18632/aging.100999] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 07/07/2016] [Indexed: 01/09/2023]
Abstract
Dermal white adipose tissue (dWAT) is increasingly appreciated as a special fat depot. The adipocytes in this depot exert a variety of unique effects on their surrounding cells and can undergo massive phenotypic changes. Significant modulation of dWAT content can be observed both in intrinsically and extrinsically aged skin. Specifically, skin that has been chronically photo-damaged displays a reduction of the dWAT volume, caused by the replacement of adipocytes by fibrotic structures. This is likely to be caused by the recently uncovered process described as "adipocyte-myofibroblast transition" (AMT). In addition, contributions of dermal adipocytes to the skin aging processes are also indirectly supported by spatial correlations between the prevalence of hypertrophic scarring and the appearance of signs of skin aging in different ethnic groups. These observations could elevate dermal adipocytes to prime targets in strategies aimed at counteracting skin aging.
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Affiliation(s)
| | - Philipp E. Scherer
- Touchstone Diabetes Center, Departments of Internal Medicine and Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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Apple ethanol extract promotes proliferation of human adult stem cells, which involves the regenerative potential of stem cells. Nutr Res 2016; 36:925-936. [PMID: 27632912 DOI: 10.1016/j.nutres.2016.06.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 06/17/2016] [Accepted: 06/20/2016] [Indexed: 02/06/2023]
Abstract
Tissue regeneration using adult stem cells (ASCs) has significant potential as a novel treatment for many degenerative diseases. Previous studies have established that age negatively affects the proliferation status and differentiation potential of ASCs, suggesting a possible limitation in their potential therapeutic use. Therefore, we hypothesized that apple extract might exert beneficial effects on ASCs. The specific objectives were to investigate the proliferative effect of apple ethanol extract on human adipose tissue-derived mesenchymal stem cells (ADSCs) and human cord blood-derived mesenchymal stem cells (CB-MSCs), and identify the possible molecular mechanisms. Apple extract promoted proliferation of ADSCs and CB-MSCs as determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and Click-iT 5-ethynyl-2'-deoxyuridine flow cytometry assays. In addition, phosphorylation of p44/42 MAPK (ERK), mammalian target of rapamycin (mTOR), p70 S6 kinase (p70S6K), S6 ribosomal protein (S6RP), eukaryotic initiation factor (eIF) 4B and eIF4E was induced stepwise in ADSCs. Furthermore, apple extract significantly induced the production of vascular endothelial growth factor and interleukin-6 in both ADSCs and CB-MSCs. Similarly, apple extract-induced phosphorylation of the mTOR/p70S6K/S6RP/eIF4B/eIF4E pathway was blocked by pretreatment with PD98059, a specific ERK inhibitor. These results indicate that apple extract-induced proliferation of ADSCs under serum-free conditions is mediated by ERK-dependent cytokine production. Moreover, the beneficial effect of apple extract on proliferation of ASCs may overcome the limitation in therapeutic use of stem cells in tissue regeneration and maintenance of stem cell homeostasis.
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11
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Antagonizing Effects of Aspartic Acid against Ultraviolet A-Induced Downregulation of the Stemness of Human Adipose Tissue-Derived Mesenchymal Stem Cells. PLoS One 2015; 10:e0124417. [PMID: 25909857 PMCID: PMC4409053 DOI: 10.1371/journal.pone.0124417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 03/02/2015] [Indexed: 01/05/2023] Open
Abstract
Ultraviolet A (UVA) irradiation is responsible for a variety of changes in cell biology. The purpose of this study was to investigate effects of aspartic acid on UVA irradiation-induced damages in the stemness properties of human adipose tissue-derived mesenchymal stem cells (hAMSCs). Furthermore, we elucidated the UVA-antagonizing mechanisms of aspartic acid. The results of this study showed that aspartic acid attenuated the UVA-induced reduction of the proliferative potential and stemness of hAMSCs, as evidenced by increased proliferative activity in the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and upregulation of stemness-related genes OCT4, NANOG, and SOX2 in response to the aspartic acid treatment. UVA-induced reduction in the mRNA level of hypoxia-inducible factor (HIF)-1α was also significantly recovered by aspartic acid. In addition, the antagonizing effects of aspartic acid against the UVA effects were found to be mediated by reduced production of PGE2 through the inhibition of JNK and p42/44 MAPK. Taken together, these findings show that aspartic acid improves reduced stemness of hAMSCs induced by UVA and its effects are mediated by upregulation of HIF-1α via the inhibition of PGE2-cAMP signaling. In addition, aspartic acid may be used as an antagonizing agent to mitigate the effects of UVA.
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12
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Bigot N, Guérillon C, Loisel S, Bertheuil N, Sensebé L, Tarte K, Pedeux R. ING1b negatively regulates HIF1α protein levels in adipose-derived stromal cells by a SUMOylation-dependent mechanism. Cell Death Dis 2015; 6:e1612. [PMID: 25611387 PMCID: PMC4669774 DOI: 10.1038/cddis.2014.577] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 11/18/2014] [Accepted: 12/03/2014] [Indexed: 12/16/2022]
Abstract
Hypoxic niches help maintain mesenchymal stromal cell properties, and their amplification under hypoxia sustains their immature state. However, how MSCs maintain their genomic integrity in this context remains elusive, since hypoxia may prevent proper DNA repair by downregulating expression of BRCA1 and RAD51. Here, we find that the ING1b tumor suppressor accumulates in adipose-derived stromal cells (ADSCs) upon genotoxic stress, owing to SUMOylation on K193 that is mediated by the E3 small ubiquitin-like modifier (SUMO) ligase protein inhibitor of activated STAT protein γ (PIAS4). We demonstrate that ING1b finely regulates the hypoxic response by triggering HIF1α proteasomal degradation. On the contrary, when mutated on its SUMOylation site, ING1b failed to efficiently decrease HIF1α levels. Consistently, we observed that the adipocyte differentiation, generally described to be downregulated by hypoxia, was highly dependent on ING1b expression, during the early days of this process. Accordingly, contrary to what was observed with HIF1α, the absence of ING1b impeded the adipogenic induction under hypoxic conditions. These data indicate that ING1b contributes to adipogenic induction in adipose-derived stromal cells, and thus hinders the phenotype maintenance of ADSCs.
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Affiliation(s)
- N Bigot
- 1] INSERM U917, Microenvironnement et Cancer, Rennes, France [2] Université de Rennes 1, Rennes, France [3] Etablissement Français du Sang Bretagne, Rennes, France
| | - C Guérillon
- 1] INSERM U917, Microenvironnement et Cancer, Rennes, France [2] Université de Rennes 1, Rennes, France [3] Etablissement Français du Sang Bretagne, Rennes, France
| | - S Loisel
- 1] INSERM U917, Microenvironnement et Cancer, Rennes, France [2] Université de Rennes 1, Rennes, France [3] Etablissement Français du Sang Bretagne, Rennes, France
| | - N Bertheuil
- 1] Université de Rennes 1, Rennes, France [2] Service ITeCH, CHU Pontchaillou, Rennes, France
| | - L Sensebé
- 1] Etablissement Français du Sang Pyrénées Méditerranée [2] Université Paul Sabatier, Toulouse, France [3] UMR5273-INSERM U1031, Toulouse, France
| | - K Tarte
- 1] INSERM U917, Microenvironnement et Cancer, Rennes, France [2] Université de Rennes 1, Rennes, France [3] Etablissement Français du Sang Bretagne, Rennes, France [4] Service ITeCH, CHU Pontchaillou, Rennes, France
| | - R Pedeux
- 1] INSERM U917, Microenvironnement et Cancer, Rennes, France [2] Université de Rennes 1, Rennes, France [3] Etablissement Français du Sang Bretagne, Rennes, France
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