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Tarapongpun T, Onlamoon N, Tabu K, Chuthapisith S, Taga T. The optimized priming effect of FGF-1 and FGF-2 enhances preadipocyte lineage commitment in human adipose-derived mesenchymal stem cells. Genes Cells 2024; 29:231-253. [PMID: 38253356 DOI: 10.1111/gtc.13095] [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: 10/17/2023] [Revised: 12/26/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024]
Abstract
The cell-assisted lipotransfer technique, integrating adipose-derived mesenchymal stem cells (ADMSCs), has transformed lipofilling, enhancing fat graft viability. However, the multipotent nature of ADMSCs poses challenges. To improve safety and graft vitality and to reduce unwanted lineage differentiation, this study refines the methodology by priming ADMSCs into preadipocytes-unipotent, self-renewing cells. We explored the impact of fibroblast growth factor-1 (FGF-1), fibroblast growth factor-2 (FGF-2), and epidermal growth factor (EGF), either alone or in combination, on primary human ADMSCs during the proliferative phase. FGF-2 emerged as a robust stimulator of cell proliferation, preserving stemness markers, especially when combined with EGF. Conversely, FGF-1, while not significantly affecting cell growth, influenced cell morphology, transitioning cells to a rounded shape with reduced CD34 expression. Furthermore, co-priming with FGF-1 and FGF-2 enhanced adipogenic potential, limiting osteogenic and chondrogenic tendencies, and possibly promoting preadipocyte commitment. These preadipocytes exhibited unique features: rounded morphology, reduced CD34, decreased preadipocyte factor 1 (Pref-1), and elevated C/EBPα and PPARγ, alongside sustained stemness markers (CD73, CD90, CD105). Mechanistically, FGF-1 and FGF-2 activated key adipogenic transcription factors-C/EBPα and PPARγ-while inhibiting GATA3 and Notch3, which are adipogenesis inhibitors. These findings hold the potential to advance innovative strategies for ADMSC-mediated lipofilling procedures.
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Affiliation(s)
- Tanakorn Tarapongpun
- Division of Head Neck and Breast Surgery, Faculty of Medicine Siriraj Hospital, Department of Surgery, Mahidol University, Bangkok, Thailand
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nattawat Onlamoon
- Department of Research, Faculty of Medicine Siriraj Hospital, Siriraj Research Group in Immunobiology and Therapeutic Sciences, Mahidol University, Bangkok, Thailand
| | - Kouichi Tabu
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Suebwong Chuthapisith
- Division of Head Neck and Breast Surgery, Faculty of Medicine Siriraj Hospital, Department of Surgery, Mahidol University, Bangkok, Thailand
| | - Tetsuya Taga
- Department of Stem Cell Regulation, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
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Soltani L, Varmira K, Nazari M. Comparison of the differentiation of ovine fetal bone-marrow mesenchymal stem cells towards osteocytes on chitosan/alginate/CuO-NPs and chitosan/alginate/FeO-NPs scaffolds. Sci Rep 2024; 14:161. [PMID: 38168144 PMCID: PMC10762099 DOI: 10.1038/s41598-023-50664-6] [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: 09/26/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024] Open
Abstract
In the current study, the creation of a chitosan/alginate scaffold hydrogel with and without FeO-NPs or CuO-NPs was studied. From fetal ovine bone marrow mesenchymal stem cells (BM-MSCs) were isolated and cultivated. Their differentiation into osteocyte and adipose cells was investigated. Also, on the scaffolds, cytotoxicity and apoptosis were studied. To investigate the differentiation, treatment groups include: (1) BM-MSCs were plated in DMEM culture medium with high glucose containing 10% FBS and antibiotics (negative control); (2) BM-MSCs were plated in osteogenic differentiation medium (positive control); (3) positive control group + FeO-NPs, (4) positive control group + CuO-NPs; (5) BM-MSCs were plated in osteogenic differentiation medium on chitosan/alginate scaffold; (6) BM-MSCs were plated in osteogenic differentiation medium on chitosan/alginate/FeO-NPs scaffold; and (7) BM-MSCs were plated in osteogenic differentiation medium on chitosan/alginate/CuO-NPs scaffold. Alkaline phosphatase enzyme concentrations, mineralization rate using a calcium kit, and mineralization measurement by alizarin staining quantification were evaluated after 21 days of culture. In addition, qRT-PCR was used to assess the expression of the ALP, ColA, and Runx2 genes. When compared to other treatment groups, the addition of CuO-NPs in the chitosan/alginate hydrogel significantly increased the expression of the ColA and Runx2 genes (p < 0.05). However, there was no significant difference between the chitosan/alginate hydrogel groups containing FeO-NPs and CuO-NPs in the expression of the ALP gene. It appears that the addition of nanoparticles, in particular CuO-NPs, has made the chitosan/alginate scaffold more effective in supporting osteocyte differentiation.
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Affiliation(s)
- Leila Soltani
- Department of Animal Sciences, College of Agriculture and Natural Resources, Razi University, Kermanshah, 67144-14971, Iran.
| | - Kambiz Varmira
- Research Center of Oils and Fats, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Maryam Nazari
- Applied Chemistry Department, Faculty of Chemistry, Razi University, Kermanshah, Iran
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Oral Alterations in Heritable Epidermolysis Bullosa: A Clinical Study and Literature Review. BIOMED RESEARCH INTERNATIONAL 2022; 2022:6493156. [PMID: 35686231 PMCID: PMC9173894 DOI: 10.1155/2022/6493156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/04/2022] [Accepted: 05/18/2022] [Indexed: 11/20/2022]
Abstract
Epidermolysis bullosa (EB) is a group of skin disorders with skin fragility characterized by blistering from minimal mechanical trauma with rupture at the dermoepidermal junction. There are four major classical heritable EB types, due to mutations in as many as 20 distinct genes: EB simplex (EBS), junctional EB (JEB), dystrophic EB (DEB), and Kindler EB (KEB). This study is aimed at reporting case series on patients (N = 8; males, n = 5 and females, n = 3, age range 12-68 years) affected by EB and performs a review of the literature on this topic. This group of disorders can affect oral soft and hard tissues in various ways, resulting in various effects including enamel hypoplasia, dental caries, microstomia, ankyloglossia, oral blistering, and ulcerations early-onset periodontal disease. From the sample results, it can be concluded that the clinical manifestation of EB patients is highly variable and very different in prognosis. Oral health deeply influences the quality of life of EB patients. Dental management is essential to prevent the aggravation of soft tissue damage and tooth loss and to improve the quality of life through prosthetic and restorative therapies. Dentists should consider the oral alterations of EB subtypes to perform a personalized approach to the patients' needs in a preventive and therapeutic point of view.
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Aniridia-related keratopathy relevant cell signaling pathways in human fetal corneas. Histochem Cell Biol 2022; 158:169-180. [PMID: 35551459 PMCID: PMC9338123 DOI: 10.1007/s00418-022-02099-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2022] [Indexed: 11/26/2022]
Abstract
We aimed to study aniridia-related keratopathy (ARK) relevant cell signaling pathways [Notch1, Wnt/β-catenin, Sonic hedgehog (SHH) and mTOR] in normal human fetal corneas compared with normal human adult corneas and ARK corneas. We found that fetal corneas at 20 weeks of gestation (wg) and normal adult corneas showed similar staining patterns for Notch1; however 10–11 wg fetal corneas showed increased presence of Notch1. Numb and Dlk1 had an enhanced presence in the fetal corneas compared with the adult corneas. Fetal corneas showed stronger immunolabeling with antibodies against β-catenin, Wnt5a, Wnt7a, Gli1, Hes1, p-rpS6, and mTOR when compared with the adult corneas. Gene expression of Notch1, Wnt5A, Wnt7A, β-catenin, Hes1, mTOR, and rps6 was higher in the 9–12 wg fetal corneas compared with adult corneas. The cell signaling pathway differences found between human fetal and adult corneas were similar to those previously found in ARK corneas with the exception of Notch1. Analogous profiles of cell signaling pathway activation between human fetal corneas and ARK corneas suggests that there is a less differentiated host milieu in ARK.
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Abstract
DLK1 is a maternally imprinted, paternally expressed gene coding for the transmembrane protein Delta-like homologue 1 (DLK1), a non-canonical NOTCH ligand with well-described roles during development, and tumor-supportive functions in several aggressive cancer forms. Here, we review the many functions of DLK1 as a regulator of stem cell pools and tissue differentiation in tissues such as brain, muscle, and liver. Furthermore, we review recent evidence supporting roles for DLK1 in the maintenance of aggressive stem cell characteristics of tumor cells, specifically focusing on central nervous system tumors, neuroblastoma, and hepatocellular carcinoma. We discuss NOTCH -dependent as well as NOTCH-independent functions of DLK1, and focus particularly on the complex pattern of DLK1 expression and cleavage that is finely regulated from a spatial and temporal perspective. Progress in recent years suggest differential functions of extracellular, soluble DLK1 as a paracrine stem cell niche-secreted factor, and has revealed a role for the intracellular domain of DLK1 in cell signaling and tumor stemness. A better understanding of DLK1 regulation and signaling may enable therapeutic targeting of cancer stemness by interfering with DLK1 release and/or intracellular signaling.
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Affiliation(s)
- Elisa Stellaria Grassi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Alexander Pietras
- Division of Translational Cancer Research, Department of Laboratory Medicine, Lund University, Lund, Sweden
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Woods K, Guezguez B. Dynamic Changes of the Bone Marrow Niche: Mesenchymal Stromal Cells and Their Progeny During Aging and Leukemia. Front Cell Dev Biol 2021; 9:714716. [PMID: 34447754 PMCID: PMC8383146 DOI: 10.3389/fcell.2021.714716] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/22/2021] [Indexed: 12/11/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) are a heterogenous cell population found in a wide range of tissues in the body, known for their nutrient-producing and immunomodulatory functions. In the bone marrow (BM), these MSCs are critical for the regulation of hematopoietic stem cells (HSC) that are responsible for daily blood production and functional immunity throughout an entire organism's lifespan. Alongside other stromal cells, MSCs form a specialized microenvironment BM tissue called "niche" that tightly controls HSC self-renewal and differentiation. In addition, MSCs are crucial players in maintaining bone integrity and supply of hormonal nutrients due to their capacity to differentiate into osteoblasts and adipocytes which also contribute to cellular composition of the BM niche. However, MSCs are known to encompass a large heterogenous cell population that remains elusive and poorly defined. In this review, we focus on deciphering the BM-MSC biology through recent advances in single-cell identification of hierarchical subsets with distinct functionalities and transcriptional profiles. We also discuss the contribution of MSCs and their osteo-adipo progeny in modulating the complex direct cell-to-cell or indirect soluble factors-mediated interactions of the BM HSC niche during homeostasis, aging and myeloid malignancies. Lastly, we examine the therapeutic potential of MSCs for rejuvenation and anti-tumor remedy in clinical settings.
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Affiliation(s)
- Kevin Woods
- German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany
- Department of Hematology and Oncology, University Medical Center Mainz, Mainz, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Borhane Guezguez
- German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany
- Department of Hematology and Oncology, University Medical Center Mainz, Mainz, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
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Pref-1 induced lung fibroblast differentiation by hypoxia through integrin α5β1/ERK/AP-1 cascade. Eur J Pharmacol 2021; 909:174385. [PMID: 34331953 DOI: 10.1016/j.ejphar.2021.174385] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/15/2021] [Accepted: 07/23/2021] [Indexed: 11/20/2022]
Abstract
Chronic obstructive asthma is characterized by airway fibrosis. Hypoxia and connective tissue growth factor (CTGF) play important roles in airway fibrosis. Preadipocyte factor-1 (Pref-1) participates in adipocyte differentiation and liver fibrosis. Herein, we investigated the role of Pref-1 in airway fibrosis in chronic obstructive asthma. We found that Pref-1 was overexpressed in lung tissues from chronic obstructive asthma patients compared to normal subjects. Extracellular matrix proteins were inhibited by Pref-1 small interfering (si)RNA in airway fibroblasts from chronic obstructive asthma patients. Furthermore, ovalbumin induced prominent Pref-1 expression and fibronectin coexpression. Hypoxia induced Pref-1 upregulation and its release into medium of WI-38 cells. Hypoxia-induced CTGF expression was inhibited by Pref-1 siRNA. We also found that Pref-1-stimulated fibrotic protein expressions were reduced by ATN-161, curcumin, U0126, and c-Jun siRNA in WI-38. Furthermore, ATN161 inhibited Pref-1-induced ERK phosphorylation, and ITGA5 siRNA inhibited c-Jun phosphorylation. Moreover, expression of CTGF, Fibronectin, α-SMA, and ERK and c-Jun phosphorylation were all increased in fibroblasts from patients with chronic obstructive asthma. Taken together, these results suggest that Pref-1 participates in airway fibrosis and hypoxia-induced CTGF expression via the integrin receptor α5β1/ERK/AP-1 pathway.
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Montalbán-Loro R, Lassi G, Lozano-Ureña A, Perez-Villalba A, Jiménez-Villalba E, Charalambous M, Vallortigara G, Horner AE, Saksida LM, Bussey TJ, Trejo JL, Tucci V, Ferguson-Smith AC, Ferrón SR. Dlk1 dosage regulates hippocampal neurogenesis and cognition. Proc Natl Acad Sci U S A 2021; 118:e2015505118. [PMID: 33712542 PMCID: PMC7980393 DOI: 10.1073/pnas.2015505118] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Neurogenesis in the adult brain gives rise to functional neurons, which integrate into neuronal circuits and modulate neural plasticity. Sustained neurogenesis throughout life occurs in the subgranular zone (SGZ) of the dentate gyrus in the hippocampus and is hypothesized to be involved in behavioral/cognitive processes such as memory and in diseases. Genomic imprinting is of critical importance to brain development and normal behavior, and exemplifies how epigenetic states regulate genome function and gene dosage. While most genes are expressed from both alleles, imprinted genes are usually expressed from either the maternally or the paternally inherited chromosome. Here, we show that in contrast to its canonical imprinting in nonneurogenic regions, Delta-like homolog 1 (Dlk1) is expressed biallelically in the SGZ, and both parental alleles are required for stem cell behavior and normal adult neurogenesis in the hippocampus. To evaluate the effects of maternally, paternally, and biallelically inherited mutations within the Dlk1 gene in specific behavioral domains, we subjected Dlk1-mutant mice to a battery of tests that dissociate and evaluate the effects of Dlk1 dosage on spatial learning ability and on anxiety traits. Importantly, reduction in Dlk1 levels triggers specific cognitive abnormalities that affect aspects of discriminating differences in environmental stimuli, emphasizing the importance of selective absence of imprinting in this neurogenic niche.
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Affiliation(s)
- Raquel Montalbán-Loro
- ERI Biotecmed-Departamento de Biología Celular, Universidad de Valencia, 46010 Valencia,Spain
| | - Glenda Lassi
- Genetics and Epigenetics of Behaviour (GEB) Laboratory, Istituto Italiano di Tecnologia, 16163 Genova, Italy
- Translational Science and Experimental Medicine Research and Early Development, Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Cambridge Biomedical Campus, Cambridge CB2 0AA, United Kingdom
| | - Anna Lozano-Ureña
- ERI Biotecmed-Departamento de Biología Celular, Universidad de Valencia, 46010 Valencia,Spain
| | - Ana Perez-Villalba
- ERI Biotecmed-Departamento de Biología Celular, Universidad de Valencia, 46010 Valencia,Spain
- Faculty of Psychology, Laboratory of Animal Behavior Phenotype (LABP), Universidad Católica de Valencia, 46100 Valencia, Spain
| | | | - Marika Charalambous
- Department of Genetics, University of Cambridge, Cambridge CB2 3EH, United Kingdom
| | | | - Alexa E Horner
- Synome Ltd, Babraham, Cambridge CB22 3AT, United Kingdom
| | - Lisa M Saksida
- Department of Psychology, Medical Research Council and Wellcome Trust Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge CB2 3EB, United Kingdom
- Molecular Medicine Research Laboratories, Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5K8, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada
- The Brain and Mind Institute, Western University, London, ON N6A 5B7, Canada
| | - Timothy J Bussey
- Department of Psychology, Medical Research Council and Wellcome Trust Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge CB2 3EB, United Kingdom
- Molecular Medicine Research Laboratories, Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5K8, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada
- The Brain and Mind Institute, Western University, London, ON N6A 5B7, Canada
| | - José Luis Trejo
- Department of Translational Neuroscience, Cajal Institute, The Spanish National Research Council, Madrid 28002, Spain
| | - Valter Tucci
- Genetics and Epigenetics of Behaviour (GEB) Laboratory, Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | | | - Sacri R Ferrón
- ERI Biotecmed-Departamento de Biología Celular, Universidad de Valencia, 46010 Valencia,Spain;
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Abstract
PURPOSE OF REVIEW Novel therapies for damaged and diseased bone are being developed in a preclinical testing process consisting of in vitro cell experiments followed by in vivo animal studies. The in vitro results are often not representative of the results observed in vivo. This could be caused by the complexity of the natural bone environment that is missing in vitro. Ex vivo bone explant cultures provide a model in which cells are preserved in their native three-dimensional environment. Herein, it is aimed to review the current status of bone explant culture models in relation to their potential in complementing the preclinical evaluation process with specific attention paid to the incorporation of mechanical loading within ex vivo culture systems. RECENT FINDINGS Bone explant cultures are often performed with physiologically less relevant bone, immature bone, and explants derived from rodents, which complicates translatability into clinical practice. Mature bone explants encounter difficulties with maintaining viability, especially in static culture. The integration of mechanical stimuli was able to extend the lifespan of explants and to induce new bone formation. Bone explant cultures provide unique platforms for bone research and mechanical loading was demonstrated to be an important component in achieving osteogenesis ex vivo. However, more research is needed to establish a representative, reliable, and reproducible bone explant culture system that includes both components of bone remodeling, i.e., formation and resorption, in order to bridge the gap between in vitro and in vivo research in preclinical testing.
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Affiliation(s)
- E E A Cramer
- Orthopaedic Biomechanics, Department of Biomedical Engineering and Institute of Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, the Netherlands
| | - K Ito
- Orthopaedic Biomechanics, Department of Biomedical Engineering and Institute of Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, the Netherlands
| | - S Hofmann
- Orthopaedic Biomechanics, Department of Biomedical Engineering and Institute of Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, the Netherlands.
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Effect of 20(S)-Hydroxycholesterol on Multilineage Differentiation of Mesenchymal Stem Cells Isolated from Compact Bones in Chicken. Genes (Basel) 2020; 11:genes11111360. [PMID: 33213081 PMCID: PMC7698591 DOI: 10.3390/genes11111360] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 11/17/2022] Open
Abstract
Bone health and body weight gain have significant economic and welfare importance in the poultry industry. Mesenchymal stem cells (MSCs) are common progenitors of different cell lineages such as osteoblasts, adipocytes, and myocytes. Specific oxysterols have shown to be pro-osteogenic and anti-adipogenic in mouse and human MSCs. To determine the effect of 20(S)-hydroxycholesterol (20S) on osteogenic, adipogenic, and myogenic differentiation in chicken, mesenchymal stem cells isolated from compact bones of broiler chickens (cBMSCs) were subjected to various doses of 20S, and markers of lineage-specific mRNA were analyzed using real-time PCR and cell cytochemistry. Further studies were conducted to evaluate the molecular mechanisms involved in lineage-specific differentiation pathways. Like human and mouse MSCs, 20S oxysterol expressed pro-osteogenic, pro-myogenic, and anti-adipogenic differentiation potential in cBMSCs. Moreover, 20(S)-Hydroxycholesterol induced markers of osteogenic genes and myogenic regulatory factors when exposed to cBMSCs treated with their specific medium. In contrast, 20S oxysterol suppressed expression of adipogenic marker genes when exposed to cBMSCs treated with OA, an adipogenic precursor of cBMSCs. To elucidate the molecular mechanism by which 20S exerts its differentiation potential in all three lineages, we focused on the hedgehog signaling pathway. The hedgehog inhibitor, cyclopamine, completely reversed the effect of 20S induced expression of osteogenic and anti-adipogenic mRNA. However, there was no change in the mRNA expression of myogenic genes. The results showed that 20S oxysterol promotes osteogenic and myogenic differentiation and decreases adipocyte differentiation of cBMSCs. This study also showed that the induction of osteogenesis and adipogenesis inhibition in cBMSCs by 20S is mediated through the hedgehog signaling mechanism. The results indicated that 20(S) could play an important role in the differentiation of chicken-derived MSCs and provided the theory basis on developing an intervention strategy to regulate skeletal, myogenic, and adipogenic differentiation in chicken, which will contribute to improving chicken bone health and meat quality. The current results provide the rationale for the further study of regulatory mechanisms of bioactive molecules on the differentiation of MSCs in chicken, which can help to address skeletal health problems in poultry.
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Kim HS, Ahn SH, Kim HJ, Park JW, Han I. Delta-like Factor 1 as a Possible Therapeutic Target for Sarcomas. Clin Orthop Surg 2020; 12:404-412. [PMID: 32904069 PMCID: PMC7449862 DOI: 10.4055/cios19117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 02/06/2020] [Indexed: 12/24/2022] Open
Abstract
Backgroud Cancer stem cells (CSCs) are cells characterized by their self-renewal and tumorigenic potential. The purpose of this study was to discover the role of the delta-like factor 1 (DLK1) in sarcoma. Methods mRNA expression of DLK1 from 13 sarcoma cell lines was examined. Isolated CSCs from the tumors were examined using fluorescence-activated cell sorting (FACS) with CD133, the CSC marker, or sphere-forming assay. The relationship between DLK1 and CSCs in sarcoma was examined using cell proliferation and cell invasion assays after they were treated with DLK1 short interfering RNA (siRNA). Results A high expression of DLK1 mRNA was observed in all sarcoma cell lines. However, CSCs were isolated from over expressed sarcomas of the DLK1 gene, and they have shown to be expressed lower than the wild type. The anti-cancer effects of DLK1 siRNA inhibited cell proliferation and invasion in U2OS, A204, and sw872. In addition, treatment with DLK1 siRNA inhibited cell invasion in sw872 CSCs. DLK1 gene induces tumorigenesis in various sarcoma cells and regulates the invasiveness of liposarcoma. These results suggest that DLK1 could serve as a possible therapeutic target for sarcoma. Conclusions Our study showed that the DLK1 gene induces tumorigenesis in various sarcomas and is associated with invasive mechanism in sarcoma. These results suggest DLK1 could serve as a possible therapeutic target in a variety of sarcomas.
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Affiliation(s)
- Han-Soo Kim
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea.,Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Sun Hee Ahn
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Ha Jeong Kim
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Jong Woong Park
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Ilkyu Han
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea.,Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, Korea
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Bassatne A, Jafari A, Kassem M, Mantzoros C, Rahme M, El-Hajj Fuleihan G. Delta-like 1 (DLK1) is a possible mediator of vitamin D effects on bone and energy metabolism. Bone 2020; 138:115510. [PMID: 32622071 PMCID: PMC11133180 DOI: 10.1016/j.bone.2020.115510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 06/11/2020] [Accepted: 06/25/2020] [Indexed: 10/24/2022]
Abstract
Vitamin D effects on bone and mineral metabolism are well recognized, and its anti-inflammatory actions are gaining particular interest. Delta-like 1 (DLK1) is a protein, expressed by progenitor cells of different tissues, and increases the size of progenitor cell population during the inflammatory phase of tissue regeneration. DLK1 also plays a role in energy metabolism as it antagonizes insulin signaling in bone. In this one-year randomized clinical trial of overweight elderly individuals that received either 600 or 3750 IU daily cholecalciferol we assessed the effect of vitamin D supplementation on pre-specified secondary outcomes: DLK1, leptin, adiponectin, C-Reactive Protein (CRP) and Vascular Cell Adhesion Molecule (VCAM). We also examined correlations between DLK1 and bone (BMD, bone markers), fat (adipokines, body composition), insulin sensitivity and inflammatory markers. Multivariate analyses were conducted to further explore these associations. Overall, there was a significant increase in serum DLK1 and leptin and a decrease in VCAM, but no change in CRP, after 12 months of vitamin D supplementation. DLK1 was negatively correlated with BMD and positively correlated with bone markers, associations that persisted after adjusting for age, gender and BMI. DLK1 was also positively associated with indices of insulin resistance and negatively with indices of insulin sensitivity. Correlations between DLK1 and fat parameters, such as adipokines, and DXA derived fat mass were less consistent. There were no correlations between DLK1 and inflammatory markers. In conclusion, twelve months supplementation of vitamin D3 increased serum DLK1. DLK1 was negatively associated with indices of bone health and fuel metabolism, and with 1,25(OH)2D levels. Similar to the role of DLK1 in animal models, our findings support the hypothesis that DLK1 can be targeted to regulate bone and energy metabolism and develop drugs to improve BMD and insulin sensitivity. However, further studies are needed to explore the role of DLK1 and its relationship to vitamin D metabolites in vivo.
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Affiliation(s)
- Aya Bassatne
- Calcium Metabolism and Osteoporosis Program, Division of Endocrinology and Metabolism, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Abbas Jafari
- Molecular Endocrinology and Stem Cell Research Unit (KMEB), Department of Endocrinology and Metabolism, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense, Denmark; Department of Cellular and Molecular Medicine, Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), University of Copenhagen, Copenhagen, Denmark
| | - Moustapha Kassem
- Molecular Endocrinology and Stem Cell Research Unit (KMEB), Department of Endocrinology and Metabolism, Odense University Hospital and Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Christos Mantzoros
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Maya Rahme
- Calcium Metabolism and Osteoporosis Program, Division of Endocrinology and Metabolism, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ghada El-Hajj Fuleihan
- Calcium Metabolism and Osteoporosis Program, Division of Endocrinology and Metabolism, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
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Rodriguez P, Sassi Y, Troncone L, Benard L, Ishikawa K, Gordon RE, Lamas S, Laborda J, Hajjar RJ, Lebeche D. Deletion of delta-like 1 homologue accelerates fibroblast-myofibroblast differentiation and induces myocardial fibrosis. Eur Heart J 2020; 40:967-978. [PMID: 29668883 DOI: 10.1093/eurheartj/ehy188] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/14/2018] [Accepted: 03/21/2018] [Indexed: 12/11/2022] Open
Abstract
AIMS Myocardial fibrosis is associated with profound changes in ventricular architecture and geometry, resulting in diminished cardiac function. There is currently no information on the role of the delta-like homologue 1 (Dlk1) in the regulation of the fibrotic response. Here, we investigated whether Dlk1 is involved in cardiac fibroblast-to-myofibroblast differentiation and regulates myocardial fibrosis and explored the molecular mechanism underpinning its effects in this process. METHODS AND RESULTS Using Dlk1-knockout mice and adenoviral gene delivery, we demonstrate that overexpression of Dlk1 in cardio-fibroblasts resulted in inhibition of fibroblast proliferation and differentiation into myofibroblasts. This process is mediated by TGF-β1 signalling, since isolated fibroblasts lacking Dlk1 exhibited a higher activation of the TGF-β1/Smad-3 pathway at baseline, leading to an earlier acquisition of a myofibroblast phenotype. Likewise, Dlk1-null mice displayed increased TGF-β1/Smad3 cardiac activity, resulting in infiltration/accumulation of myofibroblasts, induction and deposition of extra-domain A-fibronectin isoform and collagen, and activation of pro-fibrotic markers. Furthermore, these profibrotic events were associated with disrupted myofibril integrity, myocyte hypertrophy, and cardiac dysfunction. Interestingly, Dlk1 expression was down-regulated in ischaemic human and porcine heart tissues. Mechanistically, miR-370 mediated Dlk1's regulation of cardiac fibroblast-myofibroblast differentiation by directly targeting TGFβ-R2/Smad-3 signalling, while the Dlk1 canonical target, Notch pathway, does not seem to play a role in this process. CONCLUSION These findings are the first to demonstrate an inhibitory role of Dlk1 of cardiac fibroblast-to-myofibroblast differentiation by interfering with TGFβ/Smad-3 signalling in the myocardium. Given the deleterious effects of continuous activation of this pathway, we propose Dlk1 as a new potential candidate for therapy in cases where aberrant TGFβ signalling leads to chronic fibrosis.
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Affiliation(s)
| | - Yassine Sassi
- Department of Medicine, Cardiovascular Research Institute
| | - Luca Troncone
- Department of Medicine, Cardiovascular Research Institute
| | - Ludovic Benard
- Department of Medicine, Cardiovascular Research Institute
| | | | - Ronald E Gordon
- Department of Pathology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, USA
| | - Santiago Lamas
- Centro de Biología Molecular 'Severo Ochoa' (CSIC-UAM), Nicolás Cabrera 1, Campus UAM, Madrid, Spain
| | - Jorge Laborda
- Department of Inorganic and Organic Chemistry and Biochemistry, Pharmacy School/Biomedical Unit/CRIB, University of Castilla-La Mancha/CSIC, Dr. José María Sánchez Ibáñez Street, s/n Albacete, Spain
| | - Roger J Hajjar
- Department of Medicine, Cardiovascular Research Institute
| | - Djamel Lebeche
- Department of Medicine, Cardiovascular Research Institute
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Promotion of Bone Formation by Red Yeast Rice in Experimental Animals: A Systematic Review and Meta-Analysis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7231827. [PMID: 32832555 PMCID: PMC7429765 DOI: 10.1155/2020/7231827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 07/08/2020] [Accepted: 07/14/2020] [Indexed: 02/05/2023]
Abstract
Objective To systematically evaluate the effects of red yeast rice (RYR) and its extract on bone formation in experimental animals and to provide reference data for clinical research on the treatment of osteoporosis. Methods Chinese and English language databases, including Web of Science, PubMed, the Cochrane Library, Elsevier, Google Scholar, SpringerLink, Embase, China National Knowledge Infrastructure (CNKI), Weipu Chinese Sci-tech periodical full-text database (VIP), and Wanfang Data Knowledge Service Platform (Wanfang), were searched from their establishment to February 2020 using the following terms: “hongqu,” “red yeast rice,” “Monascus purpureus-fermented rice,” “bone mineral density,” “osteoblast,” “osteoporosis,” and “animal models.” After excluding nonrelevant articles, Review Manager 5.2 was used to evaluate article quality and to analyze the data. Outcome indicators included bone mineral density (BMD), osteoblast proliferation, and the expression of alkaline phosphatase (ALP). Results A total of 11 randomized controlled trials were included in the meta-analysis, all of which were animal studies. Six studies included data on BMD, five on osteoblast proliferation, and six on the expression of ALP. The results of the meta-analysis showed that RYR can significantly improve BMD (standardized mean difference (SMD) = 3.12, 95% confidence interval (CI) 1.41 to 4.83, P = 0.0003), promote osteoblast proliferation (SMD = 1.64, 95% CI 1.04 to 2.23, P < 0.00001), and increase ALP expression in rats (SMD = 1.25, 95% CI 0.69 to 1.80, P < 0.00001). Conclusions RYR can promote bone formation in experimental animals and may be useful for the treatment of osteoporosis.
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15
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Rahim F, Abbasi Pashaki P, Jafarisani M, Ghorbani F, Ebrahimi A. Runx2 silencing promotes adipogenesis via down-regulation of DLK1 in chondrogenic differentiating MSCs. J Gene Med 2020; 22:e3244. [PMID: 32559818 DOI: 10.1002/jgm.3244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND For cartilage regeneration, stem cells are a promising cell source; however, even the advances made in the differentiation of stem cells into precursor-differentiated cartilage cells have not been successful with respect to reprograming these cells to achieve complete differentiation and fully functioning cells until now. Previous findings suggest that Runx2 plays a major role in chondrocyte differentiation and maturation. Although targeting Runx2 has enhanced some chondrocyte properties, the adipogenic lineage shift has eventually occurred in these cells. The present study mainly aimed to reveal the mechanism of this adipogenesis. METHODS To create inducible artificial shRNA-miR expressing vectors, the designed short hairpin RNAs (shRNAs) were inserted into the pri-mir-30 backbone, cloned into lentiviral pLVET-Tet-on, and transducted into mesenchymal stem cells (MSCs). Runx2 gene was silenced in MSCs either for 1 week or 4 weeks and cultured in the chondrogenic medium. At days 7, 14 and 28, cells were harvested, and chondrogenesis, adipogenesis and hypertrophic states were examined using histochemical staining and a real-time polymerase chain reaction assay. RESULTS The results showed that the designed shRNA-miR effectively targeted Runx2 in mRNA and protein levels. Chondrogenic markers were up-regulated in constantly silenced Runx2 group; however, adipogenic markers and fat droplets appeared gradually. DLK1 gene was also significantly down-regulated in this group, and overexpression of DLK1 abrogated adipogenesis in the Runx2 targeted group. CONCLUSIONS Based on these results, it can be concluded that DLK1 is responsible for the lineage shift in Runx2 targeted chondrogenic differentiating MSCs.
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Affiliation(s)
- Fakher Rahim
- Thalassemia and Hemoglobinopathy Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Moslem Jafarisani
- Department of Biochemistry, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Fatemeh Ghorbani
- Student Research Committee, Guilan University of Medical Sciences, Rasht, Iran
| | - Ammar Ebrahimi
- Department of Medical Biotechnology, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
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Butein Promotes Lineage Commitment of Bone Marrow-Derived Stem Cells into Osteoblasts via Modulating ERK1/2 Signaling Pathways. Molecules 2020; 25:molecules25081885. [PMID: 32325749 PMCID: PMC7221720 DOI: 10.3390/molecules25081885] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/13/2020] [Accepted: 04/17/2020] [Indexed: 01/16/2023] Open
Abstract
Butein is a phytochemical that belongs to the chalcone family of flavonoids and has antitumor, anti-inflammatory, and anti-osteoclastic bone resorption activities. This study aims to investigate the effects of butein on the differentiation potential of mouse primary bone marrow-derived mesenchymal stem cells (mBMSCs) into osteoblast and adipocyte lineages. Primary cultures of mBMSCs are treated with different doses of butein during its differentiation. Osteoblast differentiation is assessed by alkaline phosphatase (ALP) activity quantification and Alizarin red staining for matrix mineralization, while adipogenesis is assessed by quantification of lipid accumulation using Oil Red O staining. Osteoblastic and adipocytic gene expression markers are determined by quantitative real-time PCR (qPCR). Western blot analysis is used to study the activation of extracellular signal-regulated kinase (ERK1/2). Interestingly, butein promotes the lineage commitment of mBMSCs into osteoblasts, while suppressing their differentiation into adipocytes in a dose-dependent manner. A similar effect of butein is confirmed in human (h) primary BMSCs. Occurring at the molecular level, butein significantly upregulates the mRNA expression of osteoblast-related genes, while downregulating the expression of adipocyte-related genes. The mechanism of butein-induced osteogenesis is found to be mediated by activating the ERK1/2 signaling pathway. To conclude, we identify butein as a novel nutraceutical compound with an osteo-anabolic activity to promote the lineage commitment of BMSCs into osteoblast versus adipocyte. Thus, butein can be a plausible therapeutic drug for enhancing bone formation in osteoporotic patients.
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Dense carbon-nanotube coating scaffolds stimulate osteogenic differentiation of mesenchymal stem cells. PLoS One 2020; 15:e0225589. [PMID: 31923243 PMCID: PMC6953859 DOI: 10.1371/journal.pone.0225589] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 11/07/2019] [Indexed: 11/24/2022] Open
Abstract
Carbon nanotubes (CNTs) have desirable mechanical properties for use as biomaterials in orthopedic and dental area such as bone- and tooth- substitutes. Here, we demonstrate that a glass surface densely coated with single-walled carbon nanotubes (SWNTs) stimulate the osteogenic differentiation of rat bone marrow mesenchymal stem cells (MSCs). MSCs incubated on SWNT- and multi-walled carbon nanotube (MWNT)-coated glass showed high activities of alkaline phosphatase that are markers for early stage osteogenic differentiation. Expression of Bmp2, Runx2, and Alpl of MSCs showed high level in the early stage for MSC incubation on SWNT- and MWNT-coated surfaces, but only the cells on the SWNT-coated glass showed high expression levels of Bglap (Osteocalcin). The cells on the SWNT-coated glass also contained the most calcium, and their calcium deposits had long needle-shaped crystals. SWNT coating at high density could be part of a new scaffold for bone regeneration.
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18
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Lecaudey LA, Sturmbauer C, Singh P, Ahi EP. Molecular mechanisms underlying nuchal hump formation in dolphin cichlid, Cyrtocara moorii. Sci Rep 2019; 9:20296. [PMID: 31889116 PMCID: PMC6937230 DOI: 10.1038/s41598-019-56771-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 12/12/2019] [Indexed: 12/15/2022] Open
Abstract
East African cichlid fishes represent a model to tackle adaptive changes and their connection to rapid speciation and ecological distinction. In comparison to bony craniofacial tissues, adaptive morphogenesis of soft tissues has been rarely addressed, particularly at the molecular level. The nuchal hump in cichlids fishes is one such soft-tissue and exaggerated trait that is hypothesized to play an innovative role in the adaptive radiation of cichlids fishes. It has also evolved in parallel across lakes in East Africa and Central America. Using gene expression profiling, we identified and validated a set of genes involved in nuchal hump formation in the Lake Malawi dolphin cichlid, Cyrtocara moorii. In particular, we found genes differentially expressed in the nuchal hump, which are involved in controlling cell proliferation (btg3, fosl1a and pdgfrb), cell growth (dlk1), craniofacial morphogenesis (dlx5a, mycn and tcf12), as well as regulators of growth-related signals (dpt, pappa and socs2). This is the first study to identify the set of genes associated with nuchal hump formation in cichlids. Given that the hump is a trait that evolved repeatedly in several African and American cichlid lineages, it would be interesting to see if the molecular pathways and genes triggering hump formation follow a common genetic track or if the trait evolved in parallel, with distinct mechanisms, in other cichlid adaptive radiations and even in other teleost fishes.
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Affiliation(s)
- Laurène Alicia Lecaudey
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway
| | - Christian Sturmbauer
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
| | - Pooja Singh
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
- Institute of Biological Sciences, University of Calgary, 2500 University Dr NW, Calgary, AB, T2N 1N4, Canada
| | - Ehsan Pashay Ahi
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria.
- Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, SE-75 236, Uppsala, Sweden.
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Abstract
PURPOSE OF REVIEW The goal of this review is to discuss the role of insulin signaling in bone marrow adipocyte formation, metabolic function, and its contribution to cellular senescence in relation to metabolic bone diseases. RECENT FINDINGS Insulin signaling is an evolutionally conserved signaling pathway that plays a critical role in the regulation of metabolism and longevity. Bone is an insulin-responsive organ that plays a role in whole body energy metabolism. Metabolic disturbances associated with obesity and type 2 diabetes increase a risk of fragility fractures along with increased bone marrow adiposity. In obesity, there is impaired insulin signaling in peripheral tissues leading to insulin resistance. However, insulin signaling is maintained in bone marrow microenvironment leading to hypermetabolic state of bone marrow stromal (skeletal) stem cells associated with accelerated senescence and accumulation of bone marrow adipocytes in obesity. This review summarizes current findings on insulin signaling in bone marrow adipocytes and bone marrow stromal (skeletal) stem cells and its importance for bone and fat metabolism. Moreover, it points out to the existence of differences between bone marrow and peripheral fat metabolism which may be relevant for developing therapeutic strategies for treatment of metabolic bone diseases.
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Affiliation(s)
- Michaela Tencerova
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, 5000, Odense C, Denmark.
- Department of Molecular Physiology of Bone, Institute of Physiology, Czech Academy of Sciences, 142 20, Prague 4, Czech Republic.
| | - Meshail Okla
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
- Stem Cell Unit, Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Moustapha Kassem
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, 5000, Odense C, Denmark
- Stem Cell Unit, Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabia
- Department of Cellular and Molecular Medicine, The Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Panum Institute, University of Copenhagen, Copenhagen, Denmark
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20
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Yuan L, Qi X, Qin G, Liu Q, Zhang F, Song Y, Deng J. Effects of gold nanostructures on differentiation of mesenchymal stem cells. Colloids Surf B Biointerfaces 2019; 184:110494. [PMID: 31520997 DOI: 10.1016/j.colsurfb.2019.110494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/03/2019] [Accepted: 09/05/2019] [Indexed: 10/26/2022]
Abstract
Nanoparticles are nanocrystals with complex facets and defective structures that do not adopt an idealised shape. Various physicochemical parameters of nanoparticles, such as surface composition, size, and stiffness, can regulate differentiation in mesenchymal stem cells (MSCs), but the influence of shapes with many edges and corner regions has not been investigated. Herein, we investigated the effects of two gold nanostructures modified with 11-mercaptoundecanoic acid, namely gold nanocubes (MUA-AuNCs) and nanooctahedras (MUA-AuNOs), on viability and differentiation in rat bone marrow MSCs (bMSCs). Analysis of cytotoxicity and proliferation demonstrated good biocompatibility, with concentrations <100 μg·mL-1 not significantly different from untreated controls. Alkaline phosphatase activity and Alizarin Red S staining revealed weaker potential for bMSCs to differentiate into osteoblasts following treatment with both low (5 μg·mL-1) and high (25 μg·mL-1) concentrations of the gold nanostructures. By contrast, Oil Red O staining showed that both nanostructures enhanced adipogenic differentiation, and upregulated peroxisome proliferator-activated receptor gamma (PPARγ) and fatty acid binding protein-4 (Fabp4) expression at both mRNA and protein levels. The effects on differentiation were both structure- and dose-dependent; MUA-AuNOs were more effective for enhancing adipogenic differentiation and weakening osteogenic differentiation, possibly due to generating higher levels of reactive oxygen species (ROS). These findings lay the foundation for using these nanoparticles as ex vivo labels in MSC-based imaging and therapy.
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Affiliation(s)
- Long Yuan
- Department of Breast Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Xiaowei Qi
- Department of Breast Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Gaoping Qin
- Department of Hepatobiliary Surgery, Provincial People's Hospital, Xian, Shanxi, 710068, China
| | - Qi Liu
- Department of Blood Transfusion, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | - Fan Zhang
- Department of Breast Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
| | - Yong Song
- Department of Hepatobiliary Surgery, Provincial People's Hospital, Xian, Shanxi, 710068, China.
| | - Jun Deng
- Institute of Burn Research, Southwest Hospital, State Key Lab of Trauma, Burn and Combined Injury, Army Medical University, Chongqing, 400038, China.
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Expression of miRNAs from the Imprinted DLK1/DIO3 Locus Signals the Osteogenic Potential of Human Pluripotent Stem Cells. Cells 2019; 8:cells8121523. [PMID: 31779280 PMCID: PMC6953034 DOI: 10.3390/cells8121523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/08/2019] [Accepted: 11/19/2019] [Indexed: 12/13/2022] Open
Abstract
Substantial variations in differentiation properties have been reported among human pluripotent cell lines (hPSC), which could affect their utility and clinical safety. We characterized the variable osteogenic capacity observed between different human pluripotent stem cell lines. By focusing on the miRNA expression profile, we demonstrated that the osteogenic differentiation propensity of human pluripotent stem cell lines could be associated with the methylation status and the expression of miRNAs from the imprinted DLK1/DIO3 locus. More specifically, quantitative analysis of the expression of six different miRNAs of that locus prospectively identified human embryonic stem cells and human-induced pluripotent stem cells with differential osteogenic differentiation capacities. At the molecular and functional levels, we showed that these miRNAs modulated the expression of the activin receptor type 2B and the downstream signal transduction, which impacted osteogenesis. In conclusion, miRNAs of the imprinted DLK1/DIO3 locus appear to have both a predictive value and a functional impact in determining the osteogenic fate of human pluripotent stem cells.
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22
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Madhusoodan AP, Das K, Mili B, Kumar K, Kumar A, Saxena AC, Singh P, Dutt T, Bag S. In vitro proliferation and differentiation of canine bone marrow derived mesenchymal stem cells over hydroxyl functionalized CNT substrates. ACTA ACUST UNITED AC 2019; 24:e00387. [PMID: 31799142 PMCID: PMC6881647 DOI: 10.1016/j.btre.2019.e00387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 09/06/2019] [Accepted: 10/14/2019] [Indexed: 11/26/2022]
Abstract
Nanotopography of culture substrate acts as a positive cue in cell-biomaterial based tissue regeneration. Considering the potentiality of carbon nanotubes (CNTs) this study was designed to evaluate its two functionalized form by an in vitro culture condition using canine mesenchymal stem cells as cellular model. Cells were isolated and its behaviour, proliferation and differentiation processes were elucidated onto CNT substrates. Beside the variations in cellular behaviour it was remarkably noted that even though proliferation was reduced but osteogenic and chondrogenic differentiation was enhanced over multi-walled CNTs, whereas neuronal differentiation was better supported by single walled CNTs as evidenced by our cytochemical, immunocytochemical, gene expression and flow cytometry assays. The former one was noticed more cytocompatible by our different apoptosis studies. The outcome of these experiments collectively indicated that hydroxylated functionalized CNTs could be a potential scaffold constituent for future experimentations as well as for the application in regenerative medicine.
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Affiliation(s)
- A P Madhusoodan
- Division of Physiology and Climatology, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Kinsuk Das
- Division of Physiology and Climatology, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Bhabesh Mili
- Division of Physiology and Climatology, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Kuldeep Kumar
- Division of Physiology and Climatology, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Ajay Kumar
- Biochemistry and Food Science Section, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - A C Saxena
- Division of Surgery, Izatnagar, ICAR - Indian Veterinary Research Institute, Uttar Pradesh, India
| | - Praveen Singh
- Biophysics, Electron Microscopy and Instrumentation Section, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Triveni Dutt
- Division of Livestock Production and Management, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
| | - Sadhan Bag
- Division of Physiology and Climatology, ICAR - Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India
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Sebo ZL, Rendina-Ruedy E, Ables GP, Lindskog DM, Rodeheffer MS, Fazeli PK, Horowitz MC. Bone Marrow Adiposity: Basic and Clinical Implications. Endocr Rev 2019; 40:1187-1206. [PMID: 31127816 PMCID: PMC6686755 DOI: 10.1210/er.2018-00138] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 04/03/2019] [Indexed: 12/14/2022]
Abstract
The presence of adipocytes in mammalian bone marrow (BM) has been recognized histologically for decades, yet, until recently, these cells have received little attention from the research community. Advancements in mouse transgenics and imaging methods, particularly in the last 10 years, have permitted more detailed examinations of marrow adipocytes than ever before and yielded data that show these cells are critical regulators of the BM microenvironment and whole-body metabolism. Indeed, marrow adipocytes are anatomically and functionally separate from brown, beige, and classic white adipocytes. Thus, areas of BM space populated by adipocytes can be considered distinct fat depots and are collectively referred to as marrow adipose tissue (MAT) in this review. In the proceeding text, we focus on the developmental origin and physiologic functions of MAT. We also discuss the signals that cause the accumulation and loss of marrow adipocytes and the ability of these cells to regulate other cell lineages in the BM. Last, we consider roles for MAT in human physiology and disease.
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Affiliation(s)
- Zachary L Sebo
- Department of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut.,Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut
| | | | - Gene P Ables
- Orentreich Foundation for the Advancement of Science, Cold Spring, New York
| | - Dieter M Lindskog
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut
| | - Matthew S Rodeheffer
- Department of Comparative Medicine, Yale University School of Medicine, New Haven, Connecticut.,Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, Connecticut
| | - Pouneh K Fazeli
- Neuroendocrine Unit, Massachusetts General Hospital, Boston, Massachusetts
| | - Mark C Horowitz
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut
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24
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Kim HB, Jin B, Patel DK, Kim JW, Kim J, Seonwoo H, Lim KT. Enhanced Osteogenesis of Human Mesenchymal Stem Cells in Presence of Single-Walled Carbon Nanotubes. IEEE Trans Nanobioscience 2019; 18:463-468. [DOI: 10.1109/tnb.2019.2914127] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Nehlin JO, Jafari A, Tencerova M, Kassem M. Aging and lineage allocation changes of bone marrow skeletal (stromal) stem cells. Bone 2019; 123:265-273. [PMID: 30946971 DOI: 10.1016/j.bone.2019.03.041] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/30/2019] [Accepted: 03/31/2019] [Indexed: 01/02/2023]
Abstract
Aging is associated with decreased bone mass and accumulation of bone marrow adipocytes. Both bone forming osteoblastic cells and bone marrow adipocytes are derived from a stem cell population within the bone marrow stroma called bone marrow stromal (skeletal or mesenchymal) stem cells (BMSC). In the present review, we provide an overview, based on the current literature, regarding the physiological aging processes that cause changes in BMSC lineage allocation, enhancement of adipocyte and defective osteoblast differentiation, leading to gradual exhaustion of stem cell regenerative potential and defects in bone tissue homeostasis and metabolism. We discuss strategies to preserve the "youthful" state of BMSC, to reduce bone marrow age-associated adiposity, and to counteract the overall negative effects of aging on bone tissues with the aim of decreasing bone fragility and risk of fractures.
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Affiliation(s)
- Jan O Nehlin
- The Molecular Endocrinology & Stem Cell Research Unit (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark; Clinical Research Center, Copenhagen University Hospital, Hvidovre, Denmark.
| | - Abbas Jafari
- The Molecular Endocrinology & Stem Cell Research Unit (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark; Department of Cellular and Molecular Medicine, The Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Michaela Tencerova
- The Molecular Endocrinology & Stem Cell Research Unit (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark; Danish Diabetes Academy, Novo Nordisk Foundation, Odense, Denmark
| | - Moustapha Kassem
- The Molecular Endocrinology & Stem Cell Research Unit (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark; Department of Cellular and Molecular Medicine, The Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Panum Institute, University of Copenhagen, Copenhagen, Denmark; Stem Cell Unit, Department of Anatomy, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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Abstract
Anorexia nervosa, a psychiatric disease predominantly affecting women, is characterized by self- induced starvation and a resultant low-weight state. During starvation, a number of hormonal adaptations - including hypothalamic amenorrhea and growth hormone resistance - allow for decreased energy expenditure during periods of decreased nutrient intake, but these very same adaptations also contribute to the medical complications associated with chronic starvation, including low bone mass. Almost 90% of women with anorexia nervosa have bone mineral density (BMD) values more than one-standard deviation below the mean of healthy women at peak bone mineral density and this disease is associated with a significantly increased risk of fracture. Although multiple therapies have been studied for the treatment of low bone mass in anorexia nervosa, there are currently no approved therapies and few promising long-term therapeutic options. This review will outline the mediators of low bone mass in anorexia nervosa, discuss therapies that have been studied for the treatment of low BMD in this disorder, and highlight the important challenges that remain, including the differences in bone modeling in adolescents with anorexia nervosa as compared to adults, necessitating that potential therapies be tested in these two populations separately, and the paucity of long-term therapeutic strategies for treating bone loss in this disorder.
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Affiliation(s)
- Pouneh K Fazeli
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA
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27
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Traustadóttir GÁ, Lagoni LV, Ankerstjerne LBS, Bisgaard HC, Jensen CH, Andersen DC. The imprinted gene Delta like non-canonical Notch ligand 1 (Dlk1) is conserved in mammals, and serves a growth modulatory role during tissue development and regeneration through Notch dependent and independent mechanisms. Cytokine Growth Factor Rev 2019; 46:17-27. [DOI: 10.1016/j.cytogfr.2019.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/21/2019] [Accepted: 03/21/2019] [Indexed: 12/22/2022]
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28
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Garcia-Gallastegi P, Ruiz-García A, Ibarretxe G, Rivero-Hinojosa S, González-Siccha AD, Laborda J, Crende O, Unda F, García-Ramírez JJ. Similarities and differences in tissue distribution of DLK1 and DLK2 during E16.5 mouse embryogenesis. Histochem Cell Biol 2019; 152:47-60. [DOI: 10.1007/s00418-019-01778-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2019] [Indexed: 10/27/2022]
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29
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Liu M, Li B, Peng W, Ma Y, Huang Y, Lan X, Lei C, Qi X, Liu GE, Chen H. LncRNA-MEG3 promotes bovine myoblast differentiation by sponging miR-135. J Cell Physiol 2019; 234:18361-18370. [PMID: 30887511 DOI: 10.1002/jcp.28469] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/09/2019] [Accepted: 02/19/2019] [Indexed: 12/19/2022]
Abstract
Long noncoding RNA maternally expressed gene 3 (lncRNA-MEG3) is an important regulator in multiple biological functions. However, lncRNA-MEG3's function in cattle growth and regulatory mechanism on bovine skeletal muscle development has not yet been well studied. In this project, we first investigated lncRNA-MEG3's expression profile and detected that it was highly expressed in bovine skeletal muscle tissue and its RNA level was kept increasingly during the early phase of bovine primary myoblast differentiation. Using luciferase reporter assays, we identified the lncRNA-MEG3 core promoter containing putative transcription factor binding site for myocyte enhancer factor 2C (MEF2C). Interestingly, we found that LncRNA-MEG3 could significantly upregulate and downregulate myosin heavy chain ( MHC), myogenin ( MyoG), and MEF2C through overexpression and RNAi strategies, respectively. Using luciferase reporter assays, we also verified lncRNA-MEG3 as a miR-135 sponge. Overexpression of miR-135 markedly inhibited the wild type of lncRNA-MEG3, but not the mutant lncRNA-MEG3 reporter. The luciferase activity of miR-135 sensor could be rescued by lncRNA-MEG3 via competing for miRNA-135. In addition, the luciferase activity of MEF2C was significantly upregulated by the wild type of lncRNA-MEG3. This study, for the first time, revealed that lncRNA-MEG3 could promote bovine skeletal muscle differentiation via interacting with miRNA-135 and MEF2C. The results were valuable for further studies and applications of lncRNA related roles in beef molecular breeding.
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Affiliation(s)
- Mei Liu
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China.,Animal Genomics and Improvement Laboratory, BARC, Agricultural Research Service, USDA, Beltsville, Maryland
| | - Bo Li
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - Wenwen Peng
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - Yilei Ma
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - Yongzhen Huang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - Xianyong Lan
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - Chuzhao Lei
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
| | - Xinglei Qi
- Bureau of Animal Husbandry of Biyang County, Biyang, Henan, China
| | - George E Liu
- Animal Genomics and Improvement Laboratory, BARC, Agricultural Research Service, USDA, Beltsville, Maryland
| | - Hong Chen
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, China
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30
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Huang J, Zhao X, Wang J, Cheng Y, Wu Q, Wang B, Zhao F, Meng L, Zhang Y, Jin M, Xu H. Distinct roles of Dlk1 isoforms in bi-potential differentiation of hepatic stem cells. Stem Cell Res Ther 2019; 10:31. [PMID: 30646961 PMCID: PMC6334473 DOI: 10.1186/s13287-019-1131-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/27/2018] [Accepted: 01/01/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Fully understanding the developmental process of hepatic stem cells (HSCs) and the mechanisms of their committed differentiation is essential for optimizing the generation of functional hepatocytes for cell therapy in liver disease. Delta-like 1 homolog (Dlk1), primarily the membrane-bound form (Dlk1M), is generally used as a surface marker for fetal hepatic stem cell isolation, while its soluble form (Dlk1S) and the functional roles of different Dlk1 isoforms in HSC differentiation remain to be investigated. METHODS Hepatic spheroid-derived cells (HSDCs) were isolated from E12.5 mouse livers to obtain Dlk1+ and Dlk1-subpopulations. Colony formation, BrdU staining, and CCK8 assays were used to evaluate the cell proliferation capacity, and hepatic/cholangiocytic differentiation and osteogenesis/adipogenesis were used to assess the multipotency of the two subpopulations. Transformation of Dlk1+ cells into Dlk1- cells was detected by FACS, and the expression of Dlk1 isoforms were measured by western blot. The distinct roles and regulatory mechanisms of Dlk1 isoforms in HSC differentiation were investigated by overexpressing Dlk1M. RESULTS HSDCs were capable of differentiating into liver and mesenchymal lineages, comprising Dlk1+ and Dlk1- subpopulations. Dlk1+ cells expressed both Dlk1M and Dlk1S and lost expression of Dlk1M during passaging, thus transforming into Dlk1- cells, which still contained Dlk1S. Dlk1- cells maintained a self-renewal ability similar to that of Dlk1+ cells, but their capacity to differentiate into cholangiocytes was obviously enhanced. Forced expression of Dlk1M in Dlk1- cells restored their ability to differentiate into hepatocytes, with an attenuated ability to differentiate into cholangiocytes, suggesting a functional role of Dlk1 in regulating HSC differentiation in addition to acting as a biomarker. Further experiments illustrated that the regulation of committed HSC differentiation by Dlk1 was mediated by the AKT and MAPK signaling pathways. In addition, bFGF was found to serve as an important inducement for the loss of Dlk1M from Dlk1+ cells, and autophagy might be involved. CONCLUSIONS Overall, our study uncovered the differential expression and regulatory roles of Dlk1 isoforms in the commitment of HSC differentiation and suggested that Dlk1 functions as a key regulator that instructs cell differentiation rather than only as a marker of HSCs. Thus, our findings expand the current understanding of the differential regulation of bi-potential HSC differentiation and provide a fine-tuning target for cell therapy in liver disease.
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Affiliation(s)
- Jiefang Huang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Institutes for Translational Medicine, Soochow University, Suzhou, 215025, China.,Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Xiaonan Zhao
- Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Jian Wang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Institutes for Translational Medicine, Soochow University, Suzhou, 215025, China
| | - Yiji Cheng
- Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Qiong Wu
- Institute of Pediatric Research, Children's Hospital of Soochow University, Institutes for Translational Medicine, Soochow University, Suzhou, 215025, China.,Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Bei Wang
- Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Fang Zhao
- Institute of Pediatric Research, Children's Hospital of Soochow University, Institutes for Translational Medicine, Soochow University, Suzhou, 215025, China.,Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Lijun Meng
- Institute of Pediatric Research, Children's Hospital of Soochow University, Institutes for Translational Medicine, Soochow University, Suzhou, 215025, China
| | - Yanyun Zhang
- Institute of Pediatric Research, Children's Hospital of Soochow University, Institutes for Translational Medicine, Soochow University, Suzhou, 215025, China. .,Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Min Jin
- Institute of Pediatric Research, Children's Hospital of Soochow University, Institutes for Translational Medicine, Soochow University, Suzhou, 215025, China. .,Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Huanbai Xu
- Department of Endocrinology and Metabolism, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200080, China.
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31
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Fazeli PK, Klibanski A. The paradox of marrow adipose tissue in anorexia nervosa. Bone 2019; 118:47-52. [PMID: 29458121 PMCID: PMC6095826 DOI: 10.1016/j.bone.2018.02.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 02/13/2018] [Accepted: 02/14/2018] [Indexed: 12/19/2022]
Abstract
Anorexia nervosa (AN) is a psychiatric disorder characterized by inappropriate nutrient intake resulting in low body weight. Multiple hormonal adaptations facilitate decreased energy expenditure in this state of caloric deprivation including non-thyroidal illness syndrome, growth hormone resistance, and hypogonadotropic hypogonadism. Although these hormonal adaptations confer a survival advantage during periods of negative energy balance, they contribute to the long-term medical complications associated with AN, the most common of which is significant bone loss and an increased risk of fracture. In recent years, marrow adipose tissue (MAT) has emerged as an important potential determinant of the low bone mass state characteristic of AN. Unlike subcutaneous and visceral adipose tissue depots which are low in AN, MAT levels are paradoxically elevated and are inversely associated with BMD. In this review, we discuss what is known about MAT in AN and the proposed hormonal determinants of this adipose tissue depot.
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Affiliation(s)
- Pouneh K Fazeli
- Neuroendocrine Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.
| | - Anne Klibanski
- Neuroendocrine Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
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32
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Fazeli PK, Klibanski A. Effects of Anorexia Nervosa on Bone Metabolism. Endocr Rev 2018; 39:895-910. [PMID: 30165608 PMCID: PMC6226604 DOI: 10.1210/er.2018-00063] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/21/2018] [Indexed: 01/14/2023]
Abstract
Anorexia nervosa is a psychiatric disease characterized by a low-weight state due to self-induced starvation. This disorder, which predominantly affects women, is associated with hormonal adaptations that minimize energy expenditure in the setting of low nutrient intake. These adaptations include GH resistance, functional hypothalamic amenorrhea, and nonthyroidal illness syndrome. Although these adaptations may be beneficial to short-term survival, they contribute to the significant and often persistent morbidity associated with this disorder, including bone loss, which affects >85% of women. We review the hormonal adaptions to undernutrition, review hormonal treatments that have been studied for both the underlying disorder as well as for the associated decreased bone mass, and discuss the important challenges that remain, including the lack of long-term treatments for bone loss in this chronic disorder and the fact that despite recovery, many individuals who experience bone loss as adolescents have chronic deficits and an increased risk of fracture in adulthood.
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Affiliation(s)
- Pouneh K Fazeli
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Anne Klibanski
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
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33
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Vicente A, Byström B, Pedrosa Domellöf F. Altered Signaling Pathways in Aniridia-Related Keratopathy. ACTA ACUST UNITED AC 2018; 59:5531-5541. [DOI: 10.1167/iovs.18-25175] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- André Vicente
- Department of Clinical Science, Ophthalmology, Umeå University, Umeå, Sweden
| | - Berit Byström
- Department of Clinical Science, Ophthalmology, Umeå University, Umeå, Sweden
| | - Fátima Pedrosa Domellöf
- Department of Clinical Science, Ophthalmology, Umeå University, Umeå, Sweden
- Department of Integrative Medical Biology, Section for Anatomy, Umeå University, Umeå, Sweden
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34
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García-Gutiérrez MS, Navarrete F, Laborda J, Manzanares J. Deletion of Dlk1 increases the vulnerability to developing anxiety-like behaviors and ethanol consumption in mice. Biochem Pharmacol 2018; 158:37-44. [PMID: 30268817 DOI: 10.1016/j.bcp.2018.09.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 09/26/2018] [Indexed: 12/18/2022]
Abstract
Anxiety and alcohol use disorders (AUD) often present together, constituting a significant public health problem worldwide. In this study, we investigated the role of DLK1, a ligand of the Delta/NOTCH epidermal growth factor (EGF)-like protein family, reported to play a role in DA neurons differentiation in the striatum, as a neurobiological factor involved in the mechanisms regulating this psychiatric comorbidity. We exposed Dlk1 knockout mice (Dlk1-/- mice) to the open-field (OF), the light-dark box (LBD) and the elevated plus maze (EPM) tests, evaluating motivation to drink and ethanol consumption using the oral ethanol self-administration (OEA) paradigm. Quantitative real time polymerase chain reaction (qPCR) studies were carried out to evaluate alterations in targets closely related to DA neurotransmission in the reward system, tyrosine hydroxylase (Th) in the ventral tegmental area (VTA), and μ-opioid receptor (Oprm1) in the nucleus accumbens (NAc). No differences were observed in the total or peripheral distances travelled by Dlk1-/- compared to wild-type (WT) mice in OF. However, central distance travelled significantly decreased in Dlk1-/- mice. Deletion of Dlk1 increased anxiety-like behaviors in the LDB and EPM, and, Dlk1-/- mice also presented higher ethanol intake and motivation to drink (number of effective responses) in the OEA. In addition, Th and Oprm1 gene expression was reduced in the VTA and NAc of Dlk1-/- mice. We conclude that deletion of Dlk1 increases anxiety-related behaviors and vulnerability to ethanol consumption and modifies the gene expression of key targets closely related with DA neurotransmission involved in the reinforcing actions of ethanol.
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Affiliation(s)
- María S García-Gutiérrez
- Institute of Neurosciences, Miguel Hernández University-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; Topic-based Network for Cooperative Health Research (RETICS), Substance Abuse Network, Health Institute Carlos III, MICINN and FEDER, Madrid, Spain
| | - Francisco Navarrete
- Institute of Neurosciences, Miguel Hernández University-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; Topic-based Network for Cooperative Health Research (RETICS), Substance Abuse Network, Health Institute Carlos III, MICINN and FEDER, Madrid, Spain
| | - Jorge Laborda
- School of Pharmacy, Regional Center for Biomedical Research (CRIB), Biomedicine Unit UCLM-CSIC, Albacete, Spain
| | - Jorge Manzanares
- Institute of Neurosciences, Miguel Hernández University-CSIC, Avda de Ramón y Cajal s/n, San Juan de Alicante, 03550 Alicante, Spain; Topic-based Network for Cooperative Health Research (RETICS), Substance Abuse Network, Health Institute Carlos III, MICINN and FEDER, Madrid, Spain.
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35
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Bian EB, Xiong ZG, Li J. New advances of lncRNAs in liver fibrosis, with specific focus on lncRNA-miRNA interactions. J Cell Physiol 2018; 234:2194-2203. [PMID: 30229908 DOI: 10.1002/jcp.27069] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 06/25/2018] [Indexed: 12/22/2022]
Abstract
Noncoding RNAs (ncRNAs) were initially thought to be transcriptional byproducts. However, recent advances of ncRNAs research have increased our understanding of the importance of ncRNA in gene regulation and disease pathogenesis. Consistent with these developments, liver fibrosis research is also experiencing rapid growth in the investigation of links between ncRNAs and the pathology of this disease. The initial focus was on studying the function and regulation mechanisms of microRNAs (miRNAs). However, recently, elucidation of the mechanisms of long noncoding RNAs (lncRNAs) and lncRNA-mediated liver fibrosis has just commenced. In this review, we emphasize on abnormal expression of lncRNAs in liver fibrosis. Furthermore, we also discuss that the interaction of lncRNAs with miRNAs is involved in the regulation of the expression of protein-coding genes in liver fibrosis. Recent advances in understanding dysregulated lncRNAs expression and the lncRNAs-miRNAs interaction in liver fibrosis will help for developing new therapeutic targets and biomarkers of liver fibrosis.
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Affiliation(s)
- Er-Bao Bian
- Department of Neurosurgery, The Second Hospital of Anhui Medical University, Hefei, China.,Department of Basic and Clinical Pharmacology, School of Pharmacy, Anhui Medical University, Hefei, China
| | - Zhi-Gang Xiong
- Department of Basic and Clinical Pharmacology, School of Pharmacy, Anhui Medical University, Hefei, China.,Department of Neuropharmacology, Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia
| | - Jun Li
- Department of Basic and Clinical Pharmacology, School of Pharmacy, Anhui Medical University, Hefei, China
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36
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Emerging role and therapeutic implication of Wnt signaling pathways in liver fibrosis. Gene 2018; 674:57-69. [PMID: 29944952 DOI: 10.1016/j.gene.2018.06.053] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 06/14/2018] [Accepted: 06/16/2018] [Indexed: 02/08/2023]
Abstract
Activation of hepatic stellate cells (HSCs) is a pivotal cellular event in liver fibrosis. Therefore, improving our understanding of the molecular pathways that are involved in these processes is essential to generate new therapies for liver fibrosis. Greater knowledge of the role of the Wnt signaling pathway in liver fibrosis could improve understanding of the liver fibrosis pathogenesis. The aim of this review is to describe the present knowledge about the Wnt signaling pathway, which significantly participates in liver fibrosis and HSC activation, and look ahead on new perspectives of Wnt signaling pathway research. Moreover, we will discuss the different interactions with Wnt signaling pathway-regulated liver fibrosis. The Wnt signaling pathway modulates several important aspects of function, including cell proliferation, activation and differentiation. Targeting the Wnt signaling pathway can be a promising direction in liver fibrosis treatment. We discuss new perspectives of Wnt signaling pathway activation in liver fibrosis. For example, antagonist to Wnt and Wnt ligands could inhibit liver fibrosis by regulating Wnt/β-catenin signaling pathway. These findings identify the Wnt signaling pathway as a potentially important for therapeutic targets in liver fibrosis. Future studies are needed in order to find safer and more effective Wnt-based drugs.
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37
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Araya HF, Sepulveda H, Lizama CO, Vega OA, Jerez S, Briceño PF, Thaler R, Riester SM, Antonelli M, Salazar-Onfray F, Rodríguez JP, Moreno RD, Montecino M, Charbonneau M, Dubois CM, Stein GS, van Wijnen AJ, Galindo MA. Expression of the ectodomain-releasing protease ADAM17 is directly regulated by the osteosarcoma and bone-related transcription factor RUNX2. J Cell Biochem 2018; 119:8204-8219. [PMID: 29923217 DOI: 10.1002/jcb.26832] [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: 10/13/2017] [Accepted: 03/06/2018] [Indexed: 01/04/2023]
Abstract
Osteoblast differentiation is controlled by transcription factor RUNX2 which temporally activates or represses several bone-related genes, including those encoding extracellular matrix proteins or factors that control cell-cell, and cell-matrix interactions. Cell-cell communication in the many skeletal pericellular micro-niches is critical for bone development and involves paracrine secretion of growth factors and morphogens. This paracrine signaling is in part regulated by "A Disintegrin And Metalloproteinase" (ADAM) proteins. These cell membrane-associated metalloproteinases support proteolytic release ("shedding") of protein ectodomains residing at the cell surface. We analyzed microarray and RNA-sequencing data for Adam genes and show that Adam17, Adam10, and Adam9 are stimulated during BMP2 mediated induction of osteogenic differentiation and are robustly expressed in human osteoblastic cells. ADAM17, which was initially identified as a tumor necrosis factor alpha (TNFα) converting enzyme also called (TACE), regulates TNFα-signaling pathway, which inhibits osteoblast differentiation. We demonstrate that Adam17 expression is suppressed by RUNX2 during osteoblast differentiation through the proximal Adam17 promoter region (-0.4 kb) containing two functional RUNX2 binding motifs. Adam17 downregulation during osteoblast differentiation is paralleled by increased RUNX2 expression, cytoplasmic-nuclear translocation and enhanced binding to the Adam17 proximal promoter. Forced expression of Adam17 reduces Runx2 and Alpl expression, indicating that Adam17 may negatively modulate osteoblast differentiation. These findings suggest a novel regulatory mechanism involving a reciprocal Runx2-Adam17 negative feedback loop to regulate progression through osteoblast differentiation. Our results suggest that RUNX2 may control paracrine signaling through regulation of ectodomain shedding at the cell surface of osteoblasts by directly suppressing Adam17 expression.
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Affiliation(s)
- Héctor F Araya
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Hugo Sepulveda
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, FONDAP Center for Genome Regulation, Universidad Andres Bello, Santiago, Chile
| | - Carlos O Lizama
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Oscar A Vega
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Sofia Jerez
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Pedro F Briceño
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Roman Thaler
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Scott M Riester
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Marcelo Antonelli
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Flavio Salazar-Onfray
- Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, Santiago, Chile.,Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Juan Pablo Rodríguez
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), University of Chile, Santiago, Chile
| | - Ricardo D Moreno
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Martin Montecino
- Center for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, FONDAP Center for Genome Regulation, Universidad Andres Bello, Santiago, Chile
| | - Martine Charbonneau
- Immunology Division, Department of Pediatrics, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, Quebec, Canada
| | - Claire M Dubois
- Immunology Division, Department of Pediatrics, Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, Quebec, Canada
| | - Gary S Stein
- Department of Biochemistry and University of Vermont Cancer Center, The Robert Larner MD College of Medicine, University of Vermont, Burlington, Vermont
| | - Andre J van Wijnen
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.,Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | - Mario A Galindo
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Faculty of Medicine, University of Chile, Santiago, Chile
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38
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Tencerova M, Figeac F, Ditzel N, Taipaleenmäki H, Nielsen TK, Kassem M. High-Fat Diet-Induced Obesity Promotes Expansion of Bone Marrow Adipose Tissue and Impairs Skeletal Stem Cell Functions in Mice. J Bone Miner Res 2018; 33:1154-1165. [PMID: 29444341 DOI: 10.1002/jbmr.3408] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/08/2018] [Accepted: 02/09/2018] [Indexed: 12/11/2022]
Abstract
Obesity represents a risk factor for development of insulin resistance and type 2 diabetes. In addition, it has been associated with increased adipocyte formation in the bone marrow (BM) along with increased risk for bone fragility fractures. However, little is known on the cellular mechanisms that link obesity, BM adiposity, and bone fragility. Thus, in an obesity intervention study in C57BL/6J mice fed with a high-fat diet (HFD) for 12 weeks, we investigated the molecular and cellular phenotype of bone marrow adipose tissue (BMAT), BM progenitor cells, and BM microenvironment in comparison to peripheral adipose tissue (AT). HFD decreased trabecular bone mass by 29%, cortical thickness by 5%, and increased BM adiposity by 184%. In contrast to peripheral AT, BMAT did not exhibit pro-inflammatory phenotype. BM progenitor cells isolated from HFD mice exhibited decreased mRNA levels of inflammatory genes (Tnfα, IL1β, Lcn2) and did not manifest an insulin resistant phenotype evidenced by normal levels of pAKT after insulin stimulation as well as normal levels of insulin signaling genes. In addition, BM progenitor cells manifested enhanced adipocyte differentiation in HFD condition. Thus, our data demonstrate that BMAT expansion in response to HFD exerts a deleterious effect on the skeleton. Continuous recruitment of progenitor cells to adipogenesis leads to progenitor cell exhaustion, decreased recruitment to osteoblastic cells, and decreased bone formation. In addition, the absence of insulin resistance and inflammation in the BM suggest that BMAT buffers extra energy in the form of triglycerides and thus plays a role in whole-body energy homeostasis. © 2018 The Authors. Journal of Bone and Mineral Research Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Michaela Tencerova
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense C, Denmark.,Danish Diabetes Academy, Odense C, Denmark
| | - Florence Figeac
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense C, Denmark
| | - Nicholas Ditzel
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense C, Denmark
| | - Hanna Taipaleenmäki
- Molecular Skeletal Biology Laboratory, Department of Trauma, Hand, and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tina Kamilla Nielsen
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense C, Denmark
| | - Moustapha Kassem
- Department of Molecular Endocrinology, KMEB, University of Southern Denmark and Odense University Hospital, Odense C, Denmark.,Department of Cellular and Molecular Medicine, Danish Stem Cell Center (DanStem), University of Copenhagen, Copenhagen, Denmark.,Stem Cell Unit, Department of Anatomy, Faculty of Medicine, King Saud University, Kingdom of Saudi Arabia
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Figeac F, Andersen DC, Nipper Nielsen CA, Ditzel N, Sheikh SP, Skjødt K, Kassem M, Jensen CH, Abdallah BM. Antibody-based inhibition of circulating DLK1 protects from estrogen deficiency-induced bone loss in mice. Bone 2018; 110:312-320. [PMID: 29499415 DOI: 10.1016/j.bone.2018.02.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 02/26/2018] [Accepted: 02/26/2018] [Indexed: 11/23/2022]
Abstract
Soluble delta-like 1 homolog (DLK1) is a circulating protein that belongs to the Notch/Serrate/delta family, which regulates many differentiation processes including osteogenesis and adipogenesis. We have previously demonstrated an inhibitory effect of DLK1 on bone mass via stimulation of bone resorption and inhibition of bone formation. Further, serum DLK1 levels are elevated and positively correlated to bone turnover markers in estrogen (E)-deficient rodents and women. In this report, we examined whether inhibition of serum DLK1 activity using a neutralizing monoclonal antibody protects from E deficiency-associated bone loss in mice. Thus, we generated mouse monoclonal anti-mouse DLK1 antibodies (MAb DLK1) that enabled us to reduce and also quantitate the levels of bioavailable serum DLK1 in vivo. Ovariectomized (ovx) mice were injected intraperitoneally twice weekly with MAb DLK1 over a period of one month. DEXA-, microCT scanning, and bone histomorphometric analyses were performed. Compared to controls, MAb DLK1 treated ovx mice were protected against ovx-induced bone loss, as revealed by significantly increased total bone mass (BMD) due to increased trabecular bone volume fraction (BV/TV) and inhibition of bone resorption. No significant changes were observed in total fat mass or in the number of bone marrow adipocytes. These results support the potential use of anti-DLK1 antibody therapy as a novel intervention to protect from E deficiency associated bone loss.
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Affiliation(s)
- Florence Figeac
- Molecular Endocrinology Lab. (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark
| | - Ditte C Andersen
- Laboratory of Molecular and Cellular Cardiology, Dep. of Clinical Biochemistry and Pharmacology, Odense University Hospital, Denmark; Danish Center for Regenerative Medicine, Odense University Hospital, Denmark; Clinical Institute (University of Southern Denmark), Winsløwparken 213rd, Odense, Denmark
| | - Casper A Nipper Nielsen
- Department of Cancer and Inflammation, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Nicholas Ditzel
- Molecular Endocrinology Lab. (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark
| | - Søren P Sheikh
- Laboratory of Molecular and Cellular Cardiology, Dep. of Clinical Biochemistry and Pharmacology, Odense University Hospital, Denmark; Danish Center for Regenerative Medicine, Odense University Hospital, Denmark; Department of Cardiac and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Karsten Skjødt
- Department of Cancer and Inflammation, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Moustapha Kassem
- Molecular Endocrinology Lab. (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark; Department of Cellular and Molecular Medicine, DanStem (Danish Stem Cell Center), Panum Institute, University of Copenhagen, Copenhagen, Denmark; Stem Cell Unit, Department of Anatomy, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Charlotte H Jensen
- Laboratory of Molecular and Cellular Cardiology, Dep. of Clinical Biochemistry and Pharmacology, Odense University Hospital, Denmark; Danish Center for Regenerative Medicine, Odense University Hospital, Denmark; Department of Cardiac and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark.
| | - Basem M Abdallah
- Molecular Endocrinology Lab. (KMEB), Department of Endocrinology, Odense University Hospital & University of Southern Denmark, Odense, Denmark; Department of Biological Sciences, College of Science, King Faisal University, Hofuf, Saudi Arabia.
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Imprinting defects at human 14q32 locus alters gene expression and is associated with the pathobiology of osteosarcoma. Oncotarget 2018; 7:21298-314. [PMID: 26802029 PMCID: PMC5008286 DOI: 10.18632/oncotarget.6965] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 11/25/2015] [Indexed: 11/25/2022] Open
Abstract
Osteosarcoma is the most common primary bone malignancy affecting children and adolescents. Although several genetic predisposing conditions have been associated with osteosarcoma, our understanding of its pathobiology is rather limited. Here we show that, first, an imprinting defect at human 14q32-locus is highly prevalent (87%) and specifically associated with osteosarcoma patients < 30 years of age. Second, the average demethylation at differentially methylated regions (DMRs) in the 14q32-locus varied significantly compared to genome-wide demethylation. Third, the 14q32-locus was enriched in both H3K4-me3 and H3K27-me3 histone modifications that affected expression of all imprinted genes and miRNAs in this region. Fourth, imprinting defects at 14q32 - DMRs are present in triad DNA samples from affected children and their biological parents. Finally, imprinting defects at 14q32-DMRs were also observed at higher frequencies in an Rb1/Trp53 mutation-induced osteosarcoma mouse model. Further analysis of normal and tumor tissues from a Sleeping Beauty mouse model of spontaneous osteosarcoma supported the notion that these imprinting defects may be a key factor in osteosarcoma pathobiology. In conclusion, we demonstrate that imprinting defects at the 14q32 locus significantly alter gene expression, may contribute to the pathogenesis of osteosarcoma, and could be predictive of survival outcomes.
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Qi S, Zhu X, Wang X, Chen F, Yan Y, Shang G, Chen W. Role of protein delta homolog 1 in the proliferation and differentiation of ameloblasts. Mol Med Rep 2017; 17:3537-3544. [PMID: 29257328 PMCID: PMC5802151 DOI: 10.3892/mmr.2017.8290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 10/12/2017] [Indexed: 12/25/2022] Open
Abstract
Protein delta homolog 1 (DLK1) regulates the odontoblastic differentiation of human dental pulp stem cells. It was hypothesized that DLK1 may exert regulatory effects on epithelial‑mesenchymal interactions in tooth development. The present study investigated the expression of DLK1 during the development of mouse enamel and its role in the proliferation and differentiation of ameloblast‑lineage cells (ALCs). DLK1 expression was upregulated in ameloblasts in the first mandibular molar during the entire process of enamel development. The mRNA and protein levels of DLK1 were significantly upregulated following ameloblastic induction in ALCs. In addition, overexpression of DLK1 promoted the proliferation of ALCs, inhibited ameloblastic differentiation, upregulated the expression of amelogenin and enamelin, and downregulated the expression of odontogenic ameloblast‑associated protein and kallikrein 4. The results of the present study suggested that DLK1 may be a potent regulator of ameloblast proliferation and differentiation, and may regulate enamel formation during tooth development.
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Affiliation(s)
- Shengcai Qi
- Department of Oral and Maxillofacial‑Head and Neck Oncology, and Faculty of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Xueqin Zhu
- Department of Oral and Maxillofacial‑Head and Neck Oncology, and Faculty of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Xiaoning Wang
- Department of Oral and Maxillofacial‑Head and Neck Oncology, and Faculty of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
| | - Fubo Chen
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200072, P.R. China
| | - Yanhong Yan
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072, P.R. China
| | - Guangwei Shang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University, Shanghai 200072, P.R. China
| | - Wantao Chen
- Department of Oral and Maxillofacial‑Head and Neck Oncology, and Faculty of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China
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Xu W, Wang Y, Zhao H, Fan B, Guo K, Cai M, Zhang S. Delta-like 2 negatively regulates chondrogenic differentiation. J Cell Physiol 2017; 233:6574-6582. [PMID: 29057471 DOI: 10.1002/jcp.26244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 10/13/2017] [Indexed: 01/21/2023]
Abstract
Delta-like 2 (Dlk2), a glycoprotein highly homologous to Dlk1, belongs to the Notch/Delta/Serrata family. Dlk2 has been shown to be an important regulator of adipogenesis; however, its role in other cellular differentiation processes is still unknown. Therefore, in this study, we aimed to determine the role of Dlk2 in chondrogenic differentiation. We found that Dlk2 overexpression promoted the growth of ATDC5 cells but inhibited insulin-induced ATDC5 chondrogenic differentiation, as supported by the reduction in cartilage matrix formation and gene expression of aggrecan (acan), collagentype II (col2a1) and X (col10a1). In contrast, Dlk2 silencing inhibited the proliferation of ATDC5 cells but enhanced their chondrogenic differentiation. We then evaluated the roles of mitogen-activated protein kinases (MAPKs), which are activated by insulin during the chondrogenesis of ATDC5 cells. Overexpression of Dlk2 protein strongly promoted the activation of p38, but not extracellular signal-regulated kinase (ERK) 1/2 and c-Jun N-terminal kinase (JNK). Moreover, as expected, Dlk2 silencing inhibited the activation of p38, but had no effect on the ERK1/2 and JNK pathways. Finally, we also detected the expression of Dlk2 in mouse epiphyseal cartilage during embryo development. The expression of the Dlk2 protein in the limb bud could be detected at embryonic day 11.5; additionally, it was found to decrease in the superficial zones, but remained unchanged in the deep/hypertrophic zones. In conclusion, our results suggested that Dlk2 acted as an important regulator of chondrogenesis through the p38 pathway. These findings may lead to strategies for the treatment of cartilage-related diseases such as osteoarthritis.
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Affiliation(s)
- Weifeng Xu
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Yexin Wang
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Haoming Zhao
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Baotin Fan
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Ke Guo
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Ming Cai
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Craniomaxillofacial Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
| | - Shanyong Zhang
- Shanghai Key Laboratory of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.,Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China
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Horowitz MC, Berry R, Holtrup B, Sebo Z, Nelson T, Fretz JA, Lindskog D, Kaplan JL, Ables G, Rodeheffer MS, Rosen CJ. Bone marrow adipocytes. Adipocyte 2017; 6:193-204. [PMID: 28872979 DOI: 10.1080/21623945.2017.1367881] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Adipocytes were identified in human bone marrow more than a century ago, yet until recently little has been known about their origin, development, function or interactions with other cells in the bone marrow. Little functional significance has been attributed to these cells, a paradigm that still persists today. However, we now know that marrow adipose tissue increases with age and in response to a variety of physiologic induction signals. Bone marrow adipocytes have recently been shown to influence other cell populations within the marrow and can affect whole body metabolism by the secretion of a defined set of adipokines. Recent research shows that marrow adipocytes are distinct from white, brown and beige adipocytes, indicating that the bone marrow is a distinct adipose depot. This review will highlight recent data regarding these areas and the interactions of marrow adipose tissue (MAT) with cells within and outside of the bone marrow.
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Affiliation(s)
- Mark C. Horowitz
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
| | - Ryan Berry
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
| | - Brandon Holtrup
- Department of Molecular, Cell, and Developmental Biology, Yale University, New Haven, CT, USA
| | - Zachary Sebo
- Department of Molecular, Cell, and Developmental Biology, Yale University, New Haven, CT, USA
| | - Tracy Nelson
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
| | - Jackie A. Fretz
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
| | - Dieter Lindskog
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, USA
| | - Jennifer L. Kaplan
- Department of Comparative Medicine and Molecular, Cellular, and Developmental Biology, Yale University School of Medicine, New Haven, CT, USA
| | - Gene Ables
- Orentreich Foundation for the Advancement of Science, Cold Spring, NY, USA
| | - Matthew S. Rodeheffer
- Department of Comparative Medicine and Molecular, Cellular, and Developmental Biology, Yale University School of Medicine, New Haven, CT, USA
| | - Clifford J. Rosen
- The Center for Clinical and Translational Research, Maine Medical Center Research Institute, Scarborough, ME, USA
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Park YE, Musson DS, Naot D, Cornish J. Cell–cell communication in bone development and whole-body homeostasis and pharmacological avenues for bone disorders. Curr Opin Pharmacol 2017; 34:21-35. [DOI: 10.1016/j.coph.2017.04.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/07/2017] [Accepted: 04/06/2017] [Indexed: 12/11/2022]
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Traustadóttir GÁ, Jensen CH, Garcia Ramirez JJ, Beck HC, Sheikh SP, Andersen DC. The non-canonical NOTCH1 ligand Delta-like 1 homolog (DLK1) self interacts in mammals. Int J Biol Macromol 2017; 97:460-467. [DOI: 10.1016/j.ijbiomac.2017.01.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 01/12/2017] [Accepted: 01/13/2017] [Indexed: 12/11/2022]
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Liu H, Jin Y, Ge K, Jia G, Li Z, Yang X, Chen S, Ge M, Sun W, Liu D, Zhang J. Europium-Doped Gd 2O 3 Nanotubes Increase Bone Mineral Density in Vivo and Promote Mineralization in Vitro. ACS APPLIED MATERIALS & INTERFACES 2017; 9:5784-5792. [PMID: 28118705 DOI: 10.1021/acsami.6b14682] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Europium-doped Gd2O3 nanotubes (Gd2O3:Eu3+ NTs) have been extensively applied in the field of bioscience for their photostability and magnetic properties. Nevertheless, the distribution and interaction between Gd2O3:Eu3+ NTs and metabolism of bone are not yet sufficiently understood. In this study, a systematic study of the toxicity and distribution of Gd2O3:Eu3+ NTs in mice after oral administration was carried out. The results showed that a small number of the Gd2O3:Eu3+ NTs could pass through biological barriers into the lung, liver, and spleen, but a high concentration was observed in bone. Furthermore, the effects of Gd2O3:Eu3+ NTs on bone metabolism were systematically studied in vitro and in vivo when accumulating in bone. After being administered to mice, the Gd2O3:Eu3+ NTs extremely enhanced the bone mineral density and bone biomechanics. In vitro the Gd2O3:Eu3+ NTs increased the alkaline phosphatase (ALP) activity and mineralization and promoted the expression of osteogenesis genes in preosteoblasts MC3T3-E1 through activation of the BMP signaling pathway. This study will be significant for appropriate application of Gd2O3:Eu3+ NTs in the biomedical field and expounding the molecular mechanism of bone metabolism.
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Affiliation(s)
| | - Yi Jin
- College of Basic Medical Science, Hebei University , Baoding 071000, China
| | - Kun Ge
- Affiliated Hospital of Hebei University , Baoding 071000, China
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Qi S, Yan Y, Wen Y, Li J, Wang J, Chen F, Tang X, Shang G, Xu Y, Wang R. The effect of delta-like 1 homologue on the proliferation and odontoblastic differentiation in human dental pulp stem cells. Cell Prolif 2017; 50. [PMID: 28205268 DOI: 10.1111/cpr.12335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 01/03/2017] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION This study aimed to investigate the functions of delta-like homologue 1 (DLK1) in the proliferation and differentiation of human dental pulp stem cells (hDPSCs). METHODS Immunohistochemical analysis was used to determine the expression of alkaline phosphatase (ALP), dentin sialophosphoprotein (DSPP), DLK1, NOTCH1 and p-ERK1/2 in the mouse first maxillary molar. Recombinant lentivirus was constructed to overexpress DLK1 stably in hDPSCs. The cell viability and proliferation of hDPSCs were examined by CCK8 and EdU incorporation assay respectively. The odontoblastic differentiation of hDPSCs was determined by detection of ALPase activity assay, ALP and alizarin red staining and the expression of mineralization-related genes including ALP, DSPP and dental matrix protein. The mRNA and protein levels of DLK1 and p-ERK1/2 protein expression were detected. ERK inhibitor was used to test the differentiation effect of DLK1 on hDPSCs. RESULTS Delta-like homologue 1 was highly expressed on the odontoblasts and dental pulp cells on the first maxillary molar; the expression of p-ERK1/2 is similar with the DLK1 in the same process. The expression level of DLK1 increased significantly after the odontoblastic induction of hDPSCs. DLK1 overexpression increased the proliferation ability of hDPSCs and inhibited odontoblastic differentiation of hDPSCs. The protein level of p-ERK1/2 significantly increased in hDPSCs/dlk1-oe group. ERK signalling pathway inhibitor reversed the odontoblastic differentiation effects of DLK1 on hDPSCs. CONCLUSIONS The proliferation of hDPSCs was promoted after DLK1 overexpression. DLK1 inhibited the odontoblastic differentiation of hDPSCs, which maybe through ERK signalling pathway.
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Affiliation(s)
- Shengcai Qi
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yanhong Yan
- Department of Pediatric Dentistry, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yue Wen
- Institute of Stomatology, Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Jialiang Li
- Institute of Stomatology, Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Jing Wang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fubo Chen
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoshan Tang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Guangwei Shang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuanzhi Xu
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Raorao Wang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Tae Young A, Kang JH, Kang DJ, Venkatesan J, Chang HK, Bhatnagar I, Chang KY, Hwang JH, Salameh Z, Kim SK, Kim HT, Kim DG. Interaction of stem cells with nano hydroxyapatite-fucoidan bionanocomposites for bone tissue regeneration. Int J Biol Macromol 2016; 93:1488-1491. [DOI: 10.1016/j.ijbiomac.2016.07.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 07/05/2016] [Accepted: 07/07/2016] [Indexed: 10/21/2022]
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Pigossi SC, Medeiros MC, Saska S, Cirelli JA, Scarel-Caminaga RM. Role of Osteogenic Growth Peptide (OGP) and OGP(10-14) in Bone Regeneration: A Review. Int J Mol Sci 2016; 17:ijms17111885. [PMID: 27879684 PMCID: PMC5133884 DOI: 10.3390/ijms17111885] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/24/2016] [Accepted: 11/02/2016] [Indexed: 12/16/2022] Open
Abstract
Bone regeneration is a process that involves several molecular mediators, such as growth factors, which directly affect the proliferation, migration and differentiation of bone-related cells. The osteogenic growth peptide (OGP) and its C-terminal pentapeptide OGP(10–14) have been shown to stimulate the proliferation, differentiation, alkaline phosphatase activity and matrix mineralization of osteoblastic lineage cells. However, the exact molecular mechanisms that promote osteoblastic proliferation and differentiation are not completely understood. This review presents the main chemical characteristics of OGP and/or OGP(10–14), and also discusses the potential molecular pathways induced by these growth factors to promote proliferation and differentiation of osteoblasts. Furthermore, since these peptides have been extensively investigated for bone tissue engineering, the clinical applications of these peptides for bone regeneration are discussed.
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Affiliation(s)
- Suzane C Pigossi
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, UNESP-São Paulo State University, Humaita St, 1680, CEP 14801-903 Araraquara, São Paulo, Brazil.
- Department of Morphology, School of Dentistry, UNESP- São Paulo State University, Humaita St, 1680, CEP 14801-903 Araraquara, São Paulo, Brazil.
| | - Marcell C Medeiros
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, UNESP-São Paulo State University, Humaita St, 1680, CEP 14801-903 Araraquara, São Paulo, Brazil.
| | - Sybele Saska
- Department of General and Inorganic Chemistry, Institute of Chemistry, UNESP-São Paulo State University, Professor Francisco Degni St, 55, CEP 14800-900 Araraquara, São Paulo, Brazil.
| | - Joni A Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, UNESP-São Paulo State University, Humaita St, 1680, CEP 14801-903 Araraquara, São Paulo, Brazil.
| | - Raquel M Scarel-Caminaga
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, UNESP-São Paulo State University, Humaita St, 1680, CEP 14801-903 Araraquara, São Paulo, Brazil.
- Department of Morphology, School of Dentistry, UNESP- São Paulo State University, Humaita St, 1680, CEP 14801-903 Araraquara, São Paulo, Brazil.
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