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Abraham M, Kori I, Vishwakarma U, Goel S. Comprehensive assessment of goat adipose tissue-derived mesenchymal stem cells cultured in different media. Sci Rep 2024; 14:8380. [PMID: 38600175 PMCID: PMC11006890 DOI: 10.1038/s41598-024-58465-1] [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: 07/12/2023] [Accepted: 03/29/2024] [Indexed: 04/12/2024] Open
Abstract
Mesenchymal stem cells (MSCs) have demonstrated potential in treating livestock diseases that are unresponsive to conventional therapies. MSCs derived from goats, a valuable model for studying orthopaedic disorders in humans, offer insights into bone formation and regeneration. Adipose tissue-derived MSCs (ADSCs) are easily accessible and have a high capacity for expansion. Although the choice of culture media significantly influences the biological properties of MSCs, the optimal media for goat ADSCs (gADSCs) remains unclear. This study aimed to assess the effects of four commonly used culture media on gADSCs' culture characteristics, stem cell-specific immunophenotype, and differentiation. Results showed that MEM, DMEM/F12, and DMEM-LG were superior in maintaining cell morphology and culture parameters of gADSCs, such as cell adherence, metabolic activity, colony-forming potential, and population doubling. Conversely, DMEM-HG exhibited poor performance across all evaluated parameters. The gADSCs cultured in DMEM/F12 showed enhanced early proliferation and lower apoptosis. The cell surface marker distribution exhibited superior characteristics in gADSCs cultured in MEM and DMEM/F12. In contrast, the distribution was inferior in gADSCs cultured in DMEM-LG. DMEM/F12 and DMEM-LG culture media demonstrated a significantly higher potential for chondrogenic differentiation and DMEM-LG for osteogenic differentiation. In conclusion, DMEM/F12 is a suitable culture medium for propagating gADSCs as it effectively maintains cell morphology, growth parameters, proliferation and lower apoptosis while exhibiting desirable expression patterns of MSC-specific markers. These findings contribute to optimising culture conditions for gADSCs, enhancing their potential applications in disease treatment and regenerative medicine.
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Affiliation(s)
- Michelle Abraham
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad, Telangana, India
| | - Ibraz Kori
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad, Telangana, India
- DBT-Regional Centre for Biotechnology (RCB), Faridabad, Haryana, India
| | - Utkarsha Vishwakarma
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad, Telangana, India
- DBT-Regional Centre for Biotechnology (RCB), Faridabad, Haryana, India
| | - Sandeep Goel
- DBT-National Institute of Animal Biotechnology (NIAB), Hyderabad, Telangana, India.
- DBT-Regional Centre for Biotechnology (RCB), Faridabad, Haryana, India.
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2
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Marcucci G, Domazetovic V, Nediani C, Ruzzolini J, Favre C, Brandi ML. Oxidative Stress and Natural Antioxidants in Osteoporosis: Novel Preventive and Therapeutic Approaches. Antioxidants (Basel) 2023; 12:antiox12020373. [PMID: 36829932 PMCID: PMC9952369 DOI: 10.3390/antiox12020373] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/09/2023] Open
Abstract
This review reports in detail the cellular and molecular mechanisms which regulate the bone remodeling process in relation to oxidative stress (OS), inflammatory factors, and estrogen deficiency. OS is considered an important pathogenic factor of osteoporosis, inducing osteocyte apoptosis and varying levels of specific factors, such as receptor activator κB ligand (RANKL), sclerostin, and, according to recent evidence, fibroblast growth factor 23, with consequent impairment of bone remodeling and high bone resorption. Bone loss increases the risk of fragility fractures, and the most commonly used treatments are antiresorptive drugs, followed by anabolic drugs or those with a double effect. In addition, recent data show that natural antioxidants contained in the diet are efficient in preventing and reducing the negative effects of OS on bone remodeling and osteocytes through the involvement of sirtuin type 1 enzyme. Indeed, osteocytes and some of their molecular factors are considered potential biological targets on which antioxidants can act to prevent and reduce bone loss, as well as to promote bone anabolic and regenerative processes by restoring physiological bone remodeling. Several data suggest including antioxidants in novel therapeutic approaches to develop better management strategies for the prevention and treatment of osteoporosis and OS-related bone diseases. In particular, anthocyanins, as well as resveratrol, lycopene, oleuropein, some vitamins, and thiol antioxidants, could have protective and therapeutic anti-osteoporotic effects.
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Affiliation(s)
- Gemma Marcucci
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
| | - Vladana Domazetovic
- Department of Paediatric Haematology-Oncology, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy
| | - Chiara Nediani
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
- Correspondence:
| | - Jessica Ruzzolini
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
| | - Claudio Favre
- Department of Paediatric Haematology-Oncology, Meyer Children’s Hospital IRCCS, 50139 Florence, Italy
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3
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Himaki T, Hano K. Effects of alpha lipoic acid treatment during in vitro maturation on the development of porcine somatic cell nuclear transfer embryos. Anim Sci J 2023; 94:e13889. [PMID: 38031165 DOI: 10.1111/asj.13889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 10/08/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023]
Abstract
Oxidative stress influences the embryo production efficiency in vitro. We investigated the effects of alpha lipoic acid (ALA) treatment during the in vitro maturation (IVM) period on the porcine somatic cell nuclear transfer (SCNT) embryo production. After IVM, maturation rates of the 12.5- and 25-μM ALA-treated groups were not significantly different from those of the 0-μM ALA-treated group. Compared to those in the 0-μM ALA-treated group, the reactive oxygen species and glutathione levels were significantly decreased and increased, respectively, in the cytoplasm of matured oocytes in the 12.5-50-μM ALA-treated groups. Apoptosis rate in cumulus cells after IVM was significantly lower in the 12.5-50-μM ALA-treated groups than in the 0-μM ALA-treated group. Blastocyst formation rate was significantly higher in parthenogenetic oocytes treated with 12.5-μM ALA than in the 0-, 25-, and 50-μM ALA-treated groups. Similarly, in SCNT embryos, the 12.5-μM ALA-treated group showed a significantly higher blastocyst formation rate than the 0-μM ALA-treated group. Apoptosis rate in SCNT blastocysts was significantly decreased by 12.5-μM ALA treatment. The results showed that treatment with 12.5-μM ALA during IVM improves porcine SCNT embryo development and partial quality.
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Affiliation(s)
- Takehiro Himaki
- Department of Agricultural and Environmental Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Kazuki Hano
- Department of Agricultural and Environmental Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
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4
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Siennicka K, Piotrowski P, Olszewski W, Gajewska M, Mazur S, Pojda Z. In Vivo Supportive Effects of Mesenchymal Stem Cells on Fat Graft Stabilization and Local Induction of Angiogenesis Are Not Dependent on the Cell Donor Age or In Vitro Cell Culture Duration. Rejuvenation Res 2021; 24:441-448. [DOI: 10.1089/rej.2021.0042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Katarzyna Siennicka
- Department of Regenerative Medicine, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Paweł Piotrowski
- Department of Regenerative Medicine, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Wojciech Olszewski
- Department of Pathology and Laboratory Diagnostics, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Marta Gajewska
- Department of Genetics, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Sławomir Mazur
- Department of Breast Cancer and Reconstructive Surgery, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Zygmunt Pojda
- Department of Regenerative Medicine, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
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Moghimi Khorasgani A, Moradi R, Jafarpour F, Ghazvinizadehgan F, Ostadhosseini S, Heydarnezhad A, Fouladi-Nashta AA, Nasr-Esfahani MH. Alpha-Lipoic Acid Can Overcome The Reduced Developmental Competency Induced by Alcohol Toxicity during Ovine Oocyte Maturation. CELL JOURNAL 2021; 23:164-173. [PMID: 34096217 PMCID: PMC8196229 DOI: 10.22074/cellj.2021.7071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 12/08/2019] [Indexed: 11/24/2022]
Abstract
Objective Alpha-lipoic acid (ALA) as a strong antioxidant has a protective effect. This study was designed to assess
whether supplementation of maturation medium with ALA during in vitro maturation (IVM) can attenuate the toxic effect
of ethanol.
Materials and Methods In this experimental study, to assess the antioxidant capacity of ALA challenged by 1% ethanol
during in vitro maturation, immature ovine oocytes were exposed to 1% alcohol in the presence or absence of 25 µM
ALA during oocyte maturation. The cumulus expansion index, intracellular reactive oxygen species (ROS), and thiol
content levels were assessed in matured oocytes of various treatment groups. Consequently, the blastocyst formation
rate of matured oocytes in various treatment groups were assessed. In addition, total cell number (TCN), cell allocation,
DNA fragmentation, and relative gene expression of interested genes were assessed in resultant blastocysts.
Results The results revealed that alcohol significantly reduced cumulus cells (CCs) expansion index and blastocyst
yield and rate of apoptosis in resultant embryos. Addition of 25 µM ALA to 1% ethanol during oocyte maturation
decreased ROS level and elevated Thiolcontent. Furthermore, supplementation of maturation medium with ALA
attenuated the effect of 1% ethanol and significantly increased the blastocyst formation and hatching rate as compared
to control and ethanol groups. In addition, the quality of blastocysts produced in ALA+ethanol was improved based
on the low number of TUNEL positive cells, the increased expression level of mRNA for pluripotency, and anti-oxidant
markers, and decreased expression of apoptotic genes.
Conclusion The current findings demonstrate that ALA can diminish the effect of ethanol, possibly by decreasing the
ROS level and increasing Thiolcontent during oocyte maturation. Using the ALA supplement may have implications in
protecting oocytes from alcohol toxicity in affected patients.
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Affiliation(s)
- Ali Moghimi Khorasgani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Department of Agricultural Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Reza Moradi
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Farnoosh Jafarpour
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. Emails:
| | - Faezeh Ghazvinizadehgan
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Somayyeh Ostadhosseini
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Alireza Heydarnezhad
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Ali Akbar Fouladi-Nashta
- Reproduction Genes and Development Group, Department of Veterinary Basic Sciences, The Royal Veterinary College, HawksheadLane Hatfield, Herts AL97TA, UK
| | - Mohammad Hossein Nasr-Esfahani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
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Zhang Y, Li X, Chihara T, Dong H, Kagami H. Effect of TNF-α and IL-6 on Compact Bone-Derived Cells. Tissue Eng Regen Med 2021; 18:441-451. [PMID: 33847914 DOI: 10.1007/s13770-021-00336-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/28/2021] [Accepted: 03/04/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Although bone tissue engineering has already been applied clinically, its regeneration efficacy is not always sufficient. Local inflammatory cytokines are considered as the major factors that induce apoptosis of transplanted cells, thus leading to insufficient new bone formation. In this study, we focused on the effects of interleukin (IL)-6 and tumor necrosis factor-alpha (TNF-α) on differentiation and apoptosis of compact bone-derived cells (CBDCs). METHODS CBDCs were obtained from mouse legs and cultured. The effects of TNF-α and/or IL-6 on the osteogenic differentiation and apoptosis of CBDCs were analyzed in vitro. To confirm the expression of local inflammatory cytokines in vivo, CBDCs were transplanted to the back of immunocompetent mice. RESULTS IL-6 exerted inconsistent effects on the expression of the different osteogenic markers tested, while significantly upregulating Fas. By contrast, the addition of TNF-α dramatically reduced the expression of all tested osteogenic markers and increased Fas expression. The highest dose of IL-6 could partially reverse the repressive effect of TNF-α, while the addition of IL-6 further increased Fas expression in CBDCs compared to TNF-α alone. The results from in vivo experiments showed the presence of transplants with and without new bone formation. The transplants without bone formation were characterized by higher IL-6 and lower IL-10 expression than those with bone formation, while the expression of TNF-α did not show notable difference. CONCLUSION The results of this study suggest an important role for IL-6 in modulating the efficacy of bone tissue engineering, which can affect osteogenic cells both positively and negatively.
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Affiliation(s)
- Yiming Zhang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China. .,Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Japan.
| | - Xianqi Li
- Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Japan.,Department of Oral and Maxillofacial Surgery, School of Dentistry, Matsumoto Dental University, Shiojiri, Japan.,Institute for Oral Science, Matsumoto Dental University, 1780 Hirooka Gobara, Shiojiri, Nagano, 399-0781, Japan
| | - Takahiro Chihara
- Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Japan
| | - Hongwei Dong
- Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Japan
| | - Hideaki Kagami
- Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Japan. .,Institute for Oral Science, Matsumoto Dental University, 1780 Hirooka Gobara, Shiojiri, Nagano, 399-0781, Japan. .,Department of General Medicine, IMSUT Hospital, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
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7
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Namoju R, Chilaka NK. Alpha-lipoic acid ameliorates cytarabine-induced developmental anomalies in rat fetus. Hum Exp Toxicol 2020; 40:851-868. [PMID: 33225757 DOI: 10.1177/0960327120975114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cytarabine (Ara-C) is a nucleoside analogue used in the treatment of cancers and viral infections. It has teratogenic potential and causes a variety of birth defects in fetuses. Alpha-lipoic acid (ALA) is a natural antioxidant offers protection against the developmental toxicity induced by drug- or toxicant-exposure or pathological conditions. This study was aimed at evaluating the protective effect of ALA against Ara-C induced developmental toxicity in rat fetus. Pregnant rats divided into five groups and received normal saline, ALA200 mg/kg, Ara-C12.5 mg/kg, Ara-C25 mg/kg and, Ara-C25 mg/kg plus ALA200 mg/kg respectively from gestational day (GD) 8 to GD14 and sacrificed on GD21. Ara-C treatment led to a significant and dose-dependent decrease in food intake, weight gain, placental weight, and an increase in oxidative stress in pregnant rats. Further, the in-utero exposure to Ara-C led to an increase in fetal mortality, resorptions, oxidative stress, external morphological anomalies and limb abnormalities, and impaired ossification. Co-administration of ALA resulted in amelioration of the footprints of Ara-C induced toxicity in pregnant rats as well as the fetus. These findings indicate that the ALA supplementation offers protection against developmental toxicity caused by Ara-C prenatal exposure in rats.
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Affiliation(s)
- Ramanachary Namoju
- Department of Pharmacology, 78997GITAM Institute of Pharmacy, GITAM Deemed to be University, Vishakhapatnam, Andhra Pradesh, India.,Department of Pharmacology, Bhaskar Pharmacy College, Jawaharlal Nehru Technical University, Hyderabad, Telangana, India
| | - Naga Kavitha Chilaka
- Department of Pharmacology, 78997GITAM Institute of Pharmacy, GITAM Deemed to be University, Vishakhapatnam, Andhra Pradesh, India
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8
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Linares GR, Leng Y, Maric D, Chuang DM. Overexpression of fibroblast growth factor-21 (FGF-21) protects mesenchymal stem cells against caspase-dependent apoptosis induced by oxidative stress and inflammation. Cell Biol Int 2020; 44:2163-2169. [PMID: 32557962 PMCID: PMC10848314 DOI: 10.1002/cbin.11409] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 04/03/2020] [Accepted: 05/24/2020] [Indexed: 12/17/2022]
Abstract
The clinical application of stem cells offers great promise as a potential avenue for therapeutic use in neurodegenerative diseases. However, cell loss after transplantation remains a major challenge, which currently plagues the field. On the basis of our previous findings that fibroblast growth factor 21 (FGF-21) protected neurons from glutamate excitotoxicity and that upregulation of FGF-21 in a rat model of ischemic stroke was associated with neuroprotection, we proposed that overexpression of FGF-21 protects bone marrow-derived mesenchymal stem cells (MSCs) from apoptosis. To test this hypothesis, we examined whether the detrimental effects of apoptosis can be mitigated by the transgenic overexpression of FGF-21 in MSCs. FGF-21 was transduced into MSCs by lentivirus and its overexpression was confirmed by quantitative polymerase chain reaction. Moreover, FGF-21 overexpression did not stimulate the expression of other FGF family members, suggesting it does not activate a positive feedback system. The effects of hydrogen peroxide (H2 O2 ), tumor necrosis factor-α (TNF-α), and staurosporine, known inducers of apoptosis, were evaluated in FGF-21 overexpressing MSCs and mCherry control MSCs. Caspases 3 and 7 activity was markedly and dose-dependently increased by all three stimuli in mCherry MSCs. FGF-21 overexpression robustly suppressed caspase activation induced by H2 O2 and TNF-α, but not staurosporine. Moreover, the assessment of apoptotic morphological changes confirmed the protective effects of FGF-21 overexpression. Taken together, these results provide compelling evidence that FGF-21 plays a crucial role in protecting MSCs from apoptosis induced by oxidative stress and inflammation and merits further investigation as a strategy for enhancing the therapeutic efficacy of stem cell-based therapies.
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Affiliation(s)
- Gabriel R. Linares
- Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892, USA
- Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine University of Southern California, Los Angeles, CA 90033, USA
- Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research at USC, Los Angeles, CA 90033, USA
| | - Yan Leng
- Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892, USA
| | - Dragan Maric
- Flow Cytometry Core Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - De-Maw Chuang
- Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892, USA
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Wang T, Yu X, He C. Pro-inflammatory Cytokines: Cellular and Molecular Drug Targets for Glucocorticoid-induced-osteoporosis via Osteocyte. Curr Drug Targets 2020; 20:1-15. [PMID: 29618305 DOI: 10.2174/1389450119666180405094046] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/11/2018] [Accepted: 03/21/2018] [Indexed: 02/08/2023]
Abstract
Glucocorticoids are widely used to treat varieties of allergic and autoimmune diseases, however, long-term application results in glucocorticoid-induced osteoporosis (GIOP). Inflammatory cytokines: tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) play important regulatory roles in bone metabolism, but their roles in GIOP remain largely unknown. Osteocytes can modulate the formation and function of both osteoblasts and osteoclasts, directly via gap junctions, or indirectly by transferring molecule signaling. Apoptotic osteocytes release RANKL, HMGB1 and pro-inflammatory cytokines to stimulate osteoclastogenesis. Moreover, osteocytes can secrete FGF23 to regulate bone metabolism. Exposure to high levels of GCs can drive osteocyte apoptosis and influence gap junctions, leading to bone loss. GCs treatment is regarded to produce more FGF23 to inhibit bone mineralization. GCs also disrupt the vascular to decrease osteocyte feasibility and mineral appositional rate, resulting in a decline in bone strength. Apoptotic bodies from osteocytes induced by GCs treatment can enhance production of TNF-α and IL-6. On the other hand, TNF-α and IL-6 show synergistic effects by altering osteocytes signaling towards osteoclasts and osteoblasts. In addition, TNF-α can induce osteocyte apoptosis and attribute to a worsened bone quality in GCs. IL-6 and osteocytes may interact with each other. Therefore, we hypothesize that GCs regulate osteocyteogenesis through TNF-α and IL-6, which are highly expressed around osteocyte undergoing apoptosis. In the present review, we summarized the roles of osteocytes in regulating osteoblasts and osteoclasts. Furthermore, the mechanism of GCs altered relationship between osteocytes and osteoblasts/osteoclasts. In addition, we discussed the roles of TNF-α and IL-6 in GIOP by modulating osteocytes. Lastly, we discussed the possibility of using pro-inflammatory signaling pathway as therapeutic targets to develop drugs for GIOP.
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Affiliation(s)
- Tiantian Wang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.,Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.,Laboratory of Endocrinology and Metabolism, Department of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, China
| | - Xijie Yu
- Laboratory of Endocrinology and Metabolism, Department of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, China
| | - Chengqi He
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.,Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
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10
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Alshahrani I. Biomolecular phases in transverse palatal distraction: A review. Saudi J Biol Sci 2018; 25:1322-1325. [PMID: 30505176 PMCID: PMC6252022 DOI: 10.1016/j.sjbs.2018.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/05/2018] [Accepted: 05/06/2018] [Indexed: 11/17/2022] Open
Abstract
Transverse palatal distraction is a biological process of regenerating new bone and enveloping soft tissues in the maxillary palate region. This technique is similar to Osteo-distraction (OD) procedure for bone lengthening in which gradual and controlled traction forces are applied on the osteotomy gaps to produce new bone in between the surgically separated bone segments. This review describes the different phases after osteotomy and the biological process involved during the new bone and soft tissue formation. The mechanical environment formed in the distraction area is due to the traction forces by the distractor appliance. This environment stimulates differentiation of pluripotent cells, neovascularization, osteogenesis and remodeling of newly formed bone. The role of different pro-inflammatory cytokines, interleukins, bone morphogenic proteins, transforming growth factors, fibroblast growth factors-2) and extracellular matrix proteins (osteonectin, osteopontin) during the distraction phases has been described in detail. Also, an important note on the nutritional aspect during Osteo-distraction will benefit the clinicians to guide their patients after osteotomy throughout the distraction process.
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11
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Suh KS, Chon S, Choi EM. Protective effects of piceatannol on methylglyoxal-induced cytotoxicity in MC3T3-E1 osteoblastic cells. Free Radic Res 2018; 52:712-723. [DOI: 10.1080/10715762.2018.1467010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kwang Sik Suh
- Department of Endocrinology and Metabolism, School of Medicine, Kyung Hee University, Dongdaemun-gu, Republic of Korea
| | - Suk Chon
- Department of Endocrinology and Metabolism, School of Medicine, Kyung Hee University, Dongdaemun-gu, Republic of Korea
| | - Eun Mi Choi
- Department of Endocrinology and Metabolism, School of Medicine, Kyung Hee University, Dongdaemun-gu, Republic of Korea
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12
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Yao H, Yao Z, Zhang S, Zhang W, Zhou W. Upregulation of SIRT1 inhibits H2O2‑induced osteoblast apoptosis via FoxO1/β‑catenin pathway. Mol Med Rep 2018; 17:6681-6690. [PMID: 29512706 DOI: 10.3892/mmr.2018.8657] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 10/18/2017] [Indexed: 11/06/2022] Open
Abstract
Osteoporosis is a disease that significantly influences life expectancy and quality in humans. Oxidative stress may stimulate bone marrow osteoclast differentiation and inhibit osteoblast (OB) differentiation. OB proliferation and differentiation are affected by the forkhead box O (FoxO)1/β‑catenin signaling pathway. The osteogenic differentiation of mesenchymal stem cells (MSCs) may be promoted by silent information regulator type‑1 [sirtuin (SIRT)1]. However, the molecular mechanism of SIRT1 regulation of osteogenic differentiation of MSCs remains unclear, and further elucidation is needed. The present study investigated the role of SIRT1 in the FoxO1/β‑catenin signaling pathway in oxidative stress and its mechanism in the osteoblastic progenitor cell line (MC3T3‑E1). The results demonstrated that OB apoptosis and elevated oxidative stress in cells were simulated by H2O2, which was inhibited by moderate SIRT1 overexpression through reducing the oxidative stress. Further studies revealed that FOXO1 and β‑catenin pathway activity was downregulated by SIRT1 and eventually resulted in inhibition of target genes, including the proapoptotic gene B cell lymphoma‑2 interacting mediator of cell death, DNA repair gene growth arrest and DNA damage inducible protein 45 and the OB differentiation suppressor gene peroxisome proliferator activated receptor (PPAR)‑γ. Furthermore, β‑catenin and PPAR‑γ were inhibited by SIRT1. Overall, the results of the present study suggest that moderate overexpression of SIRT1 (~3‑fold of normal level) may directly or indirectly inhibit apoptosis of OBs via the FOXO1 and β‑catenin signaling pathway.
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Affiliation(s)
- Hanlin Yao
- Department of Orthopaedic, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R. China
| | - Zhen Yao
- Department of Orthopaedic, Xinchang Hospital Affiliated to Wenzhou Medical University, Hangzhou, Zhejiang 312500, P.R. China
| | - Shaocheng Zhang
- Department of Orthopaedic, Changhai Hospital Affiliated to Second Military Medical University, Shanghai 200433, P.R. China
| | - Wenjun Zhang
- Department of Orthopaedic, Qingpu People's Hospital of Zhujiajue, Shanghai 201713, P.R. China
| | - Wen Zhou
- Department of Sports Science, Shanghai University of Sports, Shanghai 200433, P.R. China
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13
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Domazetovic V, Marcucci G, Iantomasi T, Brandi ML, Vincenzini MT. Oxidative stress in bone remodeling: role of antioxidants. ACTA ACUST UNITED AC 2017; 14:209-216. [PMID: 29263736 DOI: 10.11138/ccmbm/2017.14.1.209] [Citation(s) in RCA: 420] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
ROS are highly reactive molecules which consist of a number of diverse chemical species, including radical and non-radical oxygen species. Oxidative stress occurs as a result of an overproduction of ROS not balanced by an adequate level of antioxidants. The natural antioxidants are: thiol compounds among which GSH is the most representative, and non-thiol compounds such as polyphenols, vitamins and also various enzymes. Many diseases have been linked to oxidative stress including bone diseases among which one of the most important is the osteoporosis. The redox state changes are also related to the bone remodeling process which allows the continuous bone regeneration through the coordinated action of bone cells: osteoclasts, osteoblasts and osteocytes. Changes in ROS and/or antioxidant systems seem to be involved in the pathogenesis of bone loss. ROS induce the apoptosis of osteoblasts and osteocytes, and this favours osteoclastogenesis and inhibits the mineralization and osteogenesis. Excessive osteocyte apoptosis correlates with oxidative stress causing an imbalance in favor of osteoclastogenesis which leads to increased turnover of bone remodeling and bone loss. Antioxidants either directly or by counteracting the action of oxidants contribute to activate the differentiation of osteoblasts, mineralization process and the reduction of osteoclast activity. In fact, a marked decrease in plasma antioxidants was found in aged or osteoporotic women. Some evidence shows a link among nutrients, antioxidant intake and bone health. Recent data demonstrate the antioxidant properties of various nutrients and their influence on bone metabolism. Polyphenols and anthocyanins are the most abundant antioxidants in the diet, and nutritional approaches to antioxidant strategies, in animals or selected groups of patients with osteoporosis or inflammatory bone diseases, suggest the antioxidant use in anti-resorptive therapies for the treatment and prevention of bone loss.
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Affiliation(s)
- Vladana Domazetovic
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio" (Biochemistry section), University of Florence, Florence, Italy
| | - Gemma Marcucci
- Department of Surgery and Translational Medicine (Endocrinology Section), University of Florence, Florence, Italy
| | - Teresa Iantomasi
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio" (Biochemistry section), University of Florence, Florence, Italy
| | - Maria Luisa Brandi
- Department of Surgery and Translational Medicine (Endocrinology Section), University of Florence, Florence, Italy
| | - Maria Teresa Vincenzini
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio" (Biochemistry section), University of Florence, Florence, Italy
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14
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Jing Y, Cai X, Xu Y, Zhu C, Wang L, Wang S, Zhu X, Gao P, Zhang Y, Jiang Q, Shu G. α-Lipoic Acids Promote the Protein Synthesis of C2C12 Myotubes by the TLR2/PI3K Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:1720-1729. [PMID: 26855124 DOI: 10.1021/acs.jafc.5b05952] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Skeletal muscle protein turnover is regulated by endocrine hormones, nutrients, and inflammation. α-Lipoic acid (ALA) plays an important role in energy homeostasis. Therefore, the aim of this study was to investigate the effects of ALA on protein synthesis in skeletal muscles and reveal the underlying mechanism. ALA (25 μM) significantly increased the protein synthesis and phosphorylation of Akt, mTOR, and S6 in C2C12 myotubes with attenuated phosphorylation of AMPK, Ikkα/β, and eIF2α. Intraperitoneal injection of 50 mg/kg ALA also produced the same results in mouse gastrocnemius. Both the PI3K (LY294002) and mTOR (rapamycin) inhibitors abolished the effects of ALA on protein synthesis in the C2C12 myotubes. However, AICAR (AMPK agonist) failed to block the activation of mTOR and S6 by ALA. ALA increased TLR2 and MyD88 mRNA expression in the C2C12 myotubes. TLR2 knockdown by siRNA almost eliminated the effects of ALA on protein synthesis and the Akt/mTOR pathway in the C2C12 myotubes. Immunoprecipitation data showed that ALA enhanced the p85 subunit of PI3K binding to MyD88. These findings indicate that ALA induces protein synthesis and the PI3K/Akt signaling pathway by TLR2.
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Affiliation(s)
- Yuanyuan Jing
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Xingcai Cai
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Yaqiong Xu
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Canjun Zhu
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Lina Wang
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Songbo Wang
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Xiaotong Zhu
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Ping Gao
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Yongliang Zhang
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Qingyan Jiang
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
| | - Gang Shu
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry, South China Agricultural University , Guangzhou 510640, Guangdong, China
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Fontani F, Marcucci G, Iantomasi T, Brandi ML, Vincenzini MT. Glutathione, N-acetylcysteine and lipoic acid down-regulate starvation-induced apoptosis, RANKL/OPG ratio and sclerostin in osteocytes: involvement of JNK and ERK1/2 signalling. Calcif Tissue Int 2015; 96:335-46. [PMID: 25660312 DOI: 10.1007/s00223-015-9961-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 02/02/2015] [Indexed: 12/22/2022]
Abstract
Osteocyte apoptosis due to microdamage and/or oxidative stress is related to increased local bone turnover and resorption observed in various bone diseases. Previous data on osteoblasts and osteoclasts have linked reactive oxygen species and antioxidants to bone remodelling. This study performs a comprehensive analysis on the effect of antioxidants such as glutathione (GSH), N-acetylcysteine and lipoic acid (LA) on starvation-induced osteocyte apoptosis and on cytokines involved in bone remodelling such as the receptor activator kB ligand (RANKL), osteoprotegerin (OPG) and sclerostin. For this study, apoptosis was induced by serum starvation in a murine osteocyte-like cell line MLO-Y4; this condition mimics in part osteocyte apoptosis due to microdamage. The results show that starvation-induced apoptosis and expression of RANKL, OPG and sclerostin are redox regulated processes. All antioxidants are able to inhibit the apoptosis due to starvation. They down-regulate the expression and the release of RANKL, the expression of sclerostin and RANKL/OPG ratio, whereas they only in part up-regulate OPG expression. Antioxidants mediate their effect on starvation-induced apoptosis by JNK signalling and on cytokine expression by both JNK and ERK1/2 activities. This study shows the possible involvement of biological antioxidants such as GSH and LA on redox regulated mechanisms related to apoptosis and expression of cytokines involved in bone remodelling. Moreover, it suggests that both JNK and ERK1/2 may be useful biological targets for drugs affecting bone diseases associated with increased oxidative stress.
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Affiliation(s)
- Filippo Fontani
- Department of Biomedical, Experimental and Clinical Sciences, University of Florence, Viale Morgagni 50, 50134, Florence, Italy
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16
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You Y, Liu S, Peng L, Long M, Deng H, Zhao H. Arg972 insulin receptor substrate-1 enhances tumor necrosis factor-α-induced apoptosis in osteoblasts. Mol Med Rep 2015; 12:255-60. [PMID: 25760103 DOI: 10.3892/mmr.2015.3457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 12/02/2014] [Indexed: 11/05/2022] Open
Abstract
The presence of Arg972 insulin receptor substrate-1 (IRS-1) is associated with impaired insulin/IRS-1 signaling to activate phosphatidylinositol-3 kinase (PI3K). Tumor necrosis factor-α (TNF-α), an inflammatory cytokine with a central role in the pathogenesis of rheumatoid arthritis (RA), induces apoptosis in osteoblasts, which are the principal cell type responsible for bone loss in RA. In our previous study, an association between Arg972 IRS-1 and a high risk and severity of RA was identified. In the present study, the effects of Arg972 IRS-1 and IRS-1 on TNF-α-induced apoptosis in human osteoblasts were examined. Normal and RA osteoblasts were stably transfected with Arg972 IRS-1 and IRS-1. In addition, cells were stably transduced with IRS-1-shRNA to knock down IRS1. Following stimulation with 10 nM insulin for 30 min, the stable overexpression of Arg972 IRS-1 and knock down of IRS-1 significantly decreased IRS-1-associated PI3K activity and Akt activation/phosphorylation at serine 473 (ser473) and enhanced TNF-α-induced apoptosis in normal and in RA osteoblasts. By contrast, the stable overexpression of IRS-1 significantly increased the levels of IRS-1-associated PI3K activity and Akt phosphorylation (ser473) and inhibited TNF-α-induced apoptosis, which was eliminated by pretreatment with 50 µn BJM120, a selective PI3K inhibitor, for 30 min. In conclusion, the present study provided the first evidence, to the best of our knowledge, that insulin stimulation of Arg972 IRS-1 and IRS-1 enhanced and inhibited TNF-α-induced apoptosis, respectively in normal and RA osteoblasts by a PI3K‑dependent mechanism. These findings suggest that insulin/IRS-1 signaling is important in the pathogenesis of RA.
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Affiliation(s)
- Yunhui You
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Shiqing Liu
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Lijuan Peng
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Mei Long
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Hongxiang Deng
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Hongjun Zhao
- Department of Rheumatology and Immunology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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17
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Warren CR, Grindel BJ, Francis L, Carson DD, Farach-Carson MC. Transcriptional activation by NFκB increases perlecan/HSPG2 expression in the desmoplastic prostate tumor microenvironment. J Cell Biochem 2015; 115:1322-33. [PMID: 24700612 DOI: 10.1002/jcb.24788] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 02/10/2014] [Indexed: 11/09/2022]
Abstract
Perlecan/HSPG2, a heparan sulfate proteoglycan typically found at tissue borders including those separating epithelia and connective tissue, increases near sites of invasion of primary prostatic tumors as previously shown for other proteins involved in desmoplastic tissue reaction. Studies of prostate cancer cells and stromal cells from both prostate and bone, the major site for prostate cancer metastasis, showed that cancer cells and a subset of stromal cells increased production of perlecan in response to cytokines present in the tumor microenvironment. In silico analysis of the HSPG2 promoter revealed two conserved NFκB binding sites, in addition to the previously reported SMAD3 binding sites. By systematically transfecting cells with a variety of reporter constructs including sequences up to 2.6 kb from the start site of transcription, we identified an active cis element in the distal region of the HSPG2 promoter, and showed that it functions in regulating transcription of HSPG2. Treatment with TNF-α and/or TGFβ1 identified TNF-α as a major cytokine regulator of perlecan production. TNF-α treatment also triggered p65 nuclear translocation and binding to the HSPG2 regulatory region in stromal cells and cancer cells. In addition to stromal induction of perlecan production in the prostate, we identified a matrix-secreting bone marrow stromal cell type that may represent the source for increases in perlecan in the metastatic bone marrow environment. These studies implicate perlecan in cytokine-mediated, innate tissue responses to cancer cell invasion, a process we suggest reflects a modified wound healing tissue response co-opted by prostate cancer cells.
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Affiliation(s)
- Curtis R Warren
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas
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18
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Hatami S, Zavareh S, Salehnia M, Lashkarbolouki T, Ghorbanian MT, Karimi I. Total oxidative status of mouse vitrified pre-antral follicles with pre-treatment of alpha lipoic acid. IRANIAN BIOMEDICAL JOURNAL 2015; 18:181-8. [PMID: 24842145 PMCID: PMC4048483 DOI: 10.6091/ibj.1258.2014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Background: Cryopreservation of pre-antral follicles is a hopeful technique to preserve female fertility. The aim of the present study was to evaluate reactive oxygen species (ROS) and total antioxidant capacity (TAC) levels of mouse vitrified pre-antral follicles in the presence of alpha lipoic acid (ALA). Methods: Isolated pre-antral follicles (140–150 µm in diameter) were divided into vitrified–warmed and fresh groups. Each group was subjected to in vitro maturation with or without ALA for 12 days, followed by adding human chronic gonadotropin to induce ovulation. In vitro fertilization was performed to evaluate their developmental competence. In parallel, the amount of ROS and TAC were assessed after 0, 24, 48, 72, and 96 h of culture by 2',7'-dichlorofluorescin assay and ferric reducing/antioxidant power assay, respectively. Results: The respective rates of survival, antrum formation, and metaphase II oocytes were significantly higher in ALA-supplemented groups compared to the groups not treated with ALA. TAC and ROS levels were significantly decreased and increased, respectively during the culture period up to 96 h in the absence of ALA in both vitrified and non-vitrified samples. However, with pretreatment of ALA, TAC levels were increased significantly and remained constant up to 96 h in vitrified-warmed pre-antral follicles, while ROS levels completely returned to the level of starting point after 96 h of culture in the presence of ALA. Conclusion: Pretreatment of ALA positively influences development of pre-antral follicles in vitrified and non-vitrified samples through increasing follicular TAC level and decreasing ROS levels.
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Affiliation(s)
- Sahar Hatami
- School of Biology, Damghan University, Damghan, Iran. Zavareh
| | - Saeed Zavareh
- School of Biology, Damghan University, Damghan, Iran. Zavareh.,Institute of Biological Sciences, Damghan University, Damghan, Iran
| | - Mojdeh Salehnia
- College of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Taghi Lashkarbolouki
- School of Biology, Damghan University, Damghan, Iran. Zavareh.,Institute of Biological Sciences, Damghan University, Damghan, Iran
| | - Mohammad Taghi Ghorbanian
- School of Biology, Damghan University, Damghan, Iran. Zavareh.,Institute of Biological Sciences, Damghan University, Damghan, Iran
| | - Isaac Karimi
- Laboratory of Molecular and Cellular Biology, Department of Basic Veterinary Sciences, School of Veterinary Medicine, Razi University, Kermanshah, Iran
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19
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Mamidi MK, Dutta S, Bhonde R, Das AK, Pal R. Allogeneic and autologous mode of stem cell transplantation in regenerative medicine: Which way to go? Med Hypotheses 2014; 83:787-91. [DOI: 10.1016/j.mehy.2014.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 10/14/2014] [Indexed: 01/08/2023]
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20
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Ferretti C, Lucarini G, Andreoni C, Salvolini E, Bianchi N, Vozzi G, Gigante A, Mattioli-Belmonte M. Human Periosteal Derived Stem Cell Potential: The Impact of age. Stem Cell Rev Rep 2014; 11:487-500. [DOI: 10.1007/s12015-014-9559-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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21
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Tian L, Dang XQ, Wang CS, Yang P, Zhang C, Wang KZ. Effects of sodium ferulate on preventing steroid-induced femoral head osteonecrosis in rabbits. J Zhejiang Univ Sci B 2014; 14:426-37. [PMID: 23645179 DOI: 10.1631/jzus.b1200311] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The aim of this study is to investigate the effects and possible mechanisms of sodium ferulate (SF) on anti-apoptosis in steroid-induced femoral head osteonecrosis in rabbits. Japanese white rabbits were randomly divided into three groups (control group, treatment group, and model group), each with 24 rabbits. The model and treatment groups were first injected with an intravenous dose of horse serum, 10 ml/kg, three weeks later with an intravenous dose of 7.5 ml/kg, and two weeks later with an intramuscular dose of methylprednisolone, 45 mg/kg, three times in order to establish rabbit models of osteonecrosis. Concurrently, the treatment group was injected with intravenous doses of SF 20 mg/kg for two weeks, once per day. Three time points, Weeks 2, 4, and 8, were selected after modeling was completed. Osteonecrosis was verified by histopathology with haematoxylin-eosin (HE) staining. The apoptosis rate of osteonecrosis was observed by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay. The apoptosis expressions of caspase-3 and Bcl-2 were analyzed by immunohistochemistry and Western blot. The rabbit models of osteonecrosis were successfully established and observed by HE staining. SF was effective in intervening in apoptosis and decreasing the apoptosis rate in femoral head necrosis by the immunohistochemistry and TUNEL assay (P<0.01). Western blot analysis indicated that there were statistical significances in the protein levels of caspase-3 and Bcl-2 (P<0.01). SF has a protective effect by reducing the incidence of early steroid-induced femoral head necrosis in rabbits, effectively intervening in apoptosis through decreasing caspase-3 expression and up-regulating Bcl-2 expression.
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Affiliation(s)
- Lei Tian
- Department of Orthopedics, the Second Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
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22
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Genetic confirmation for a central role for TNFα in the direct action of thyroid stimulating hormone on the skeleton. Proc Natl Acad Sci U S A 2013; 110:9891-6. [PMID: 23716650 DOI: 10.1073/pnas.1308336110] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Clinical data showing correlations between low thyroid-stimulating hormone (TSH) levels and high bone turnover markers, low bone mineral density, and an increased risk of osteoporosis-related fractures are buttressed by mouse genetic and pharmacological studies identifying a direct action of TSH on the skeleton. Here we show that the skeletal actions of TSH deficiency are mediated, in part, through TNFα. Compound mouse mutants generated by genetically deleting the Tnfα gene on a Tshr(-/-) (homozygote) or Tshr(+/-) (heterozygote) background resulted in full rescue of the osteoporosis, low bone formation, and hyperresorption that accompany TSH deficiency. Studies using ex vivo bone marrow cell cultures showed that TSH inhibits and stimulates TNFα production from macrophages and osteoblasts, respectively. TNFα, in turn, stimulates osteoclastogenesis but also enhances the production in bone marrow of a variant TSHβ. This locally produced TSH suppresses osteoclast formation in a negative feedback loop. We speculate that TNFα elevations due to low TSH signaling in human hyperthyroidism contribute to the bone loss that has traditionally been attributed solely to high thyroid hormone levels.
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Effects of Low-Dose versus High-Dose γ-Tocotrienol on the Bone Cells Exposed to the Hydrogen Peroxide-Induced Oxidative Stress and Apoptosis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:680834. [PMID: 22956976 PMCID: PMC3432387 DOI: 10.1155/2012/680834] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Accepted: 07/24/2012] [Indexed: 11/18/2022]
Abstract
Oxidative stress and apoptosis can disrupt the bone formation activity of osteoblasts which can lead to osteoporosis. This study was conducted to investigate the effects of γ-tocotrienol on lipid peroxidation, antioxidant enzymes activities, and apoptosis of osteoblast exposed to hydrogen peroxide (H2O2). Osteoblasts were treated with 1, 10, and 100 μM of γ-tocotrienol for 24 hours before being exposed to 490 μM (IC50) H2O2 for 2 hours. Results showed that γ-tocotrienol prevented the malondialdehyde (MDA) elevation induced by H2O2 in a dose-dependent manner. As for the antioxidant enzymes assays, all doses of γ-tocotrienol were able to prevent the reduction in SOD and CAT activities, but only the dose of 1 μM of GTT was able to prevent the reduction in GPx. As for the apoptosis assays, γ-tocotrienol was able to reduce apoptosis at the dose of 1 and 10 μM. However, the dose of 100 μM of γ-tocotrienol induced an even higher apoptosis than H2O2. In conclusion, low doses of γ-tocotrienol offered protection for osteoblasts against H2O2 toxicity, but itself caused toxicity at the high doses.
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24
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Yang Y, Wang W, Liu Y, Guo T, Chen P, Ma K, Zhou C. α-lipoic acid inhibits high glucose-induced apoptosis in HIT-T15 cells. Dev Growth Differ 2012; 54:557-65. [DOI: 10.1111/j.1440-169x.2012.01356.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 03/27/2012] [Accepted: 04/10/2012] [Indexed: 12/31/2022]
Affiliation(s)
| | - Weiping Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Peking University; 38 Xueyuan Road; Beijing; 100191; China
| | - Yinan Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Peking University; 38 Xueyuan Road; Beijing; 100191; China
| | - Ting Guo
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Peking University; 38 Xueyuan Road; Beijing; 100191; China
| | - Ping Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Peking University; 38 Xueyuan Road; Beijing; 100191; China
| | - Kangtao Ma
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Peking University; 38 Xueyuan Road; Beijing; 100191; China
| | - Chunyan Zhou
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Peking University; 38 Xueyuan Road; Beijing; 100191; China
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Kim M, Kim C, Choi YS, Kim M, Park C, Suh Y. Age-related alterations in mesenchymal stem cells related to shift in differentiation from osteogenic to adipogenic potential: implication to age-associated bone diseases and defects. Mech Ageing Dev 2012; 133:215-25. [PMID: 22738657 DOI: 10.1016/j.mad.2012.03.014] [Citation(s) in RCA: 132] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Revised: 03/17/2012] [Accepted: 03/28/2012] [Indexed: 02/08/2023]
Abstract
Mesenchymal stem cells (MSC) have attracted considerable attention in the fields of cell and gene therapy due to their intrinsic ability to differentiate into multiple lineages. The various therapeutic applications involving MSC require initial expansion and/or differentiation in vitro prior to clinical use. However, serial passages of MSC in culture lead to decreased differentiation potential and stem cell characteristics, eventually inducing cellular aging which will limit the success of cell-based therapeutic interventions. Here we review the age-related changes that occur in MSC with a special focus on the shift of differentiation potential from osteogenic to adipogenic lineage during the MSC aging processes and how aging causes this preferential shift by oxidative stress and/or energy metabolism defect. Oxidative stress-related signals and some microRNAs affect the differentiation potential shift of MSC by directly targeting key regulatory factors such as Runx-2 or PPAR-γ, and energy metabolism pathway is involved as well. All information described here including transcription factors, microRNAs and FoxOs could be used towards development of treatment regimens for age-related bone diseases and related defects based on mutually exclusive lineage fate determination of MSC.
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Affiliation(s)
- MiJung Kim
- Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461, USA.
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26
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Talebi A, Zavareh S, Kashani MH, Lashgarbluki T, Karimi I. The effect of alpha lipoic acid on the developmental competence of mouse isolated preantral follicles. J Assist Reprod Genet 2012; 29:175-83. [PMID: 22231012 PMCID: PMC3270132 DOI: 10.1007/s10815-011-9706-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 12/27/2011] [Indexed: 10/14/2022] Open
Abstract
PURPOSE This study was designed to investigate the effect of alpha-lipoic acid (ALA) on reactive oxygen species (ROS) production, total antioxidant capacity (TAC) and developmental competence of cultured pre-antral follicles derived from mouse ovarian tissue. METHODS Pre-antral follicles were isolated from immature mouse ovaries and were cultured in α- minimal essential medium supplemented with different concentrations (0, 50, 100, 250 and 500 uM) of ALA. Follicular growth, oocyte maturation and embryo development were evaluated. Separately, ROS and TAC were measured after 0, 24, 48, 72 and 96 h of culture with spectrofluorometery and ferric reducing/antioxidant power (FRAP) assay, respectively. RESULTS In the presence of 100 uM ALA, developmental rates of follicles, oocytes and embryos were significantly higher than other groups (p < 0.05). At 96 h after culture, a decrease in ROS and an increase in TAC were observed in ALA group compared to control group (p < 0.05). CONCLUSION ALA (100 uM) improves the in vitro development of follicles. This effect may be mediated by decreasing ROS concentration and increasing follicular TAC level during the culture period.
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Affiliation(s)
- Ali Talebi
- School of Biology, Damghan University, Damghan, Iran
| | - Saeed Zavareh
- School of Biology, Damghan University, Damghan, Iran
| | | | | | - Isaac Karimi
- School of Veterinary medicine, Razi University, Kermanshah, Iran
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27
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Kim H, Kim HJ, Lee K, Kim JM, Kim HS, Kim JR, Ha CM, Choi YK, Lee SJ, Kim JY, Harris RA, Jeong D, Lee IK. α-Lipoic acid attenuates vascular calcification via reversal of mitochondrial function and restoration of Gas6/Axl/Akt survival pathway. J Cell Mol Med 2012; 16:273-86. [PMID: 21362131 PMCID: PMC3823291 DOI: 10.1111/j.1582-4934.2011.01294.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 02/22/2011] [Indexed: 11/30/2022] Open
Abstract
Vascular calcification is prevalent in patients with chronic kidney disease and leads to increased cardiovascular morbidity and mortality. Although several reports have implicated mitochondrial dysfunction in cardiovascular disease and chronic kidney disease, little is known about the potential role of mitochondrial dysfunction in the process of vascular calcification. This study investigated the effect of α-lipoic acid (ALA), a naturally occurring antioxidant that improves mitochondrial function, on vascular calcification in vitro and in vivo. Calcifying vascular smooth muscle cells (VSMCs) treated with inorganic phosphate (Pi) exhibited mitochondrial dysfunction, as demonstrated by decreased mitochondrial membrane potential and ATP production, the disruption of mitochondrial structural integrity and concurrently increased production of reactive oxygen species. These Pi-induced functional and structural mitochondrial defects were accompanied by mitochondria-dependent apoptotic events, including release of cytochrome c from the mitochondria into the cytosol, subsequent activation of caspase-9 and -3, and chromosomal DNA fragmentation. Intriguingly, ALA blocked the Pi-induced VSMC apoptosis and calcification by recovery of mitochondrial function and intracellular redox status. Moreover, ALA inhibited Pi-induced down-regulation of cell survival signals through the binding of growth arrest-specific gene 6 (Gas6) to its cognate receptor Axl and subsequent Akt activation, resulting in increased survival and decreased apoptosis. Finally, ALA significantly ameliorated vitamin D(3) -induced aortic calcification and mitochondrial damage in mice. Collectively, the findings suggest ALA attenuates vascular calcification by inhibiting VSMC apoptosis through two distinct mechanisms; preservation of mitochondrial function via its antioxidant potential and restoration of the Gas6/Axl/Akt survival pathway.
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Affiliation(s)
- Hyunsoo Kim
- Department of Microbiology, Aging-associated Vascular Disease Research Center, Yeungnam University College of MedicineDaegu, Korea
| | - Han-Jong Kim
- Department of Internal Medicine, Biochemistry and Cell Biology, WCU Program, Research Institute for Aging and Metabolism, Kyungpook National University School of MedicineDaegu, Korea
| | - Kyunghee Lee
- Department of Microbiology, Aging-associated Vascular Disease Research Center, Yeungnam University College of MedicineDaegu, Korea
| | - Jin-Man Kim
- Department of Microbiology, Aging-associated Vascular Disease Research Center, Yeungnam University College of MedicineDaegu, Korea
| | - Hee Sun Kim
- Department of Microbiology, Aging-associated Vascular Disease Research Center, Yeungnam University College of MedicineDaegu, Korea
| | - Jae-Ryong Kim
- Department of Biochemistry and Molecular Biology, Aging-associated Vascular Disease Research Center, Yeungnam University College of MedicineDaegu, Korea
| | - Chae-Myeong Ha
- Department of Internal Medicine, Biochemistry and Cell Biology, WCU Program, Research Institute for Aging and Metabolism, Kyungpook National University School of MedicineDaegu, Korea
| | - Young-Keun Choi
- Department of Internal Medicine, Biochemistry and Cell Biology, WCU Program, Research Institute for Aging and Metabolism, Kyungpook National University School of MedicineDaegu, Korea
| | - Sun Joo Lee
- Department of Internal Medicine, Biochemistry and Cell Biology, WCU Program, Research Institute for Aging and Metabolism, Kyungpook National University School of MedicineDaegu, Korea
| | - Joon-Young Kim
- Department of Internal Medicine, Biochemistry and Cell Biology, WCU Program, Research Institute for Aging and Metabolism, Kyungpook National University School of MedicineDaegu, Korea
| | - Robert A Harris
- Department of Internal Medicine, Biochemistry and Cell Biology, WCU Program, Research Institute for Aging and Metabolism, Kyungpook National University School of MedicineDaegu, Korea
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, IndianapolisIN, USA
| | - Daewon Jeong
- Department of Microbiology, Aging-associated Vascular Disease Research Center, Yeungnam University College of MedicineDaegu, Korea
| | - In-Kyu Lee
- Department of Internal Medicine, Biochemistry and Cell Biology, WCU Program, Research Institute for Aging and Metabolism, Kyungpook National University School of MedicineDaegu, Korea
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Almeida M, Han L, Ambrogini E, Weinstein RS, Manolagas SC. Glucocorticoids and tumor necrosis factor α increase oxidative stress and suppress Wnt protein signaling in osteoblasts. J Biol Chem 2011; 286:44326-35. [PMID: 22030390 DOI: 10.1074/jbc.m111.283481] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Endogenous glucocorticoids (GCs) and inflammatory cytokines contribute to the age-associated loss of bone mass and strength, but the molecular mechanisms responsible for their deleterious effects on the aging skeleton are unclear. Based on evidence that oxidative stress is a causal mechanism of the insulin resistance produced by either one of these two agents, we tested the hypothesis that their adverse skeletal effects also result from increased oxidative stress. We report that administration of prednisolone to mice increased reactive oxygen species (ROS) and the phosphorylation of p66(shc) (an amplifier of H(2)O(2) generation in mitochondria) in bone. Dexamethasone (Dex) and TNFα had a similar effect on osteoblastic cells in vitro. The generation of ROS by Dex and TNFα required PKCβ/p66(shc) signaling and was responsible for the activation of JNK and induction of apoptosis by both agents. The activity of Forkhead box O (FoxO) transcription factors was also increased in response to ROS; however, FoxO activation opposed apoptosis induced by Dex and TNFα. In addition, both agents suppressed Akt phosphorylation as well as Wnt-induced proliferation and osteoblast differentiation. However, the inhibitory actions on Wnt signaling were independent of PKCβ/p66(shc). Instead, they were mediated by inhibition of Akt and stimulation of FoxOs. These results demonstrate that ROS-induced activation of a PKCβ/p66(shc)/JNK signaling cascade is responsible for the pro-apoptotic effects of Dex and TNFα on osteoblastic cells. Moreover, modulation of Akt and FoxOs by GCs and TNFα are cell-autonomous mechanisms of Wnt/β-catenin antagonism contributing to the adverse effects of GC excess and inflammatory cytokines on bone alike.
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Affiliation(s)
- Maria Almeida
- Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences and the Central Arkansas Veterans Health Care System, Little Rock, Arkansas 72205, USA
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Wang S, Zhao J, Zhang W, Ye D, Yu W, Zhu C, Zhang X, Sun X, Yang C, Jiang X, Zhang Z. Maintenance of phenotype and function of cryopreserved bone-derived cells. Biomaterials 2011; 32:3739-49. [PMID: 21367449 DOI: 10.1016/j.biomaterials.2011.01.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Accepted: 01/06/2011] [Indexed: 10/18/2022]
Abstract
The emerging fields of tissue engineering and regenerative medicine require large numbers of cells for therapy. Although the properties of cells obtained from a variety of fresh tissues have been delineated, the knowledge regarding cryopreserved grafts-derived cells remains elusive. Previous studies have shown that living cells could be isolated from cryopreserved bone grafts. However, whether cryopreserved bone-derived cells can be applied in regenerative medicine is largely unknown. The present study was to evaluate the potential application of cryopreserved grafts-derived cells for tissue regeneration. We showed that cells derived from cryopreserved bone grafts could maintain good proliferation activity and osteogenic phenotype. The biological phenotype of these cells could be well preserved. The transplantation of cryopreserved bone-derived cells on scaffold could promote new bone formation in nude mice and enhance the osteointegration for dental implants in canine, which confirmed their osteogenic capacity, and showed that cells derived from cryopreserved bone were comparable to that of fresh bone in terms of the ability to promote osteogenesis in vivo. This work demonstrates that cryopreserved bone grafts may represent a novel, accessible source of cells for tissue regeneration therapy, and the results of our study may also stimulate the development of other cryopreservation techniques in basic and clinical studies.
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Affiliation(s)
- Shaoyi Wang
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
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30
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Overexpression of cellular repressor of E1A-stimulated genes inhibits TNF-α-induced apoptosis via NF-κB in mesenchymal stem cells. Biochem Biophys Res Commun 2011; 406:601-7. [DOI: 10.1016/j.bbrc.2011.02.100] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Accepted: 02/19/2011] [Indexed: 11/23/2022]
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31
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Cheng LC, Su KH, Kou YR, Shyue SK, Ching LC, Yu YB, Wu YL, Pan CC, Lee TS. α-Lipoic acid ameliorates foam cell formation via liver X receptor α-dependent upregulation of ATP-binding cassette transporters A1 and G1. Free Radic Biol Med 2011; 50:47-54. [PMID: 21034810 DOI: 10.1016/j.freeradbiomed.2010.10.706] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 09/26/2010] [Accepted: 10/20/2010] [Indexed: 11/30/2022]
Abstract
α-Lipoic acid (α-LA), a key cofactor in cellular energy metabolism, has protective activities in atherosclerosis, yet the detailed mechanisms are not fully understood. In this study, we examined whether α-LA affects foam cell formation and its underlying molecular mechanisms in murine macrophages. Treatment with α-LA markedly attenuated oxidized low-density lipoprotein (oxLDL)-mediated cholesterol accumulation in macrophages, which was due to increased cholesterol efflux. Additionally, α-LA treatment dose-dependently increased protein levels of ATP-binding cassette transporter A1 (ABCA1) and ABCG1 but had no effect on the protein expression of SR-A, CD36, or SR-BI involved in cholesterol homeostasis. Furthermore, α-LA increased the mRNA expression of ABCA1 and ABCG1. The upregulation of ABCA1 and ABCG1 by α-LA depended on liver X receptor α (LXRα), as evidenced by an increase in the nuclear levels of LXRα and LXRE-mediated luciferase activity and its prevention of the expression of ABCA1 and ABCG1 after inhibition of LXRα activity by the pharmacological inhibitor geranylgeranyl pyrophosphate (GGPP) or knockdown of LXRα expression with small interfering RNA (siRNA). Consistently, α-LA-mediated suppression of oxLDL-induced lipid accumulation was abolished by GGPP or LXRα siRNA treatment. In conclusion, LXRα-dependent upregulation of ABCA1 and ABCG1 may mediate the beneficial effect of α-LA on foam cell formation.
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Affiliation(s)
- Li-Ching Cheng
- Institute of Physiology, National Yang-Ming University, Taipei 11211, Taiwan
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32
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Protective effects and mechanism of Panax Notoginseng saponins on oxidative stress-induced damage and apoptosis of rabbit bone marrow stromal cells. Chin J Integr Med 2010; 16:525-30. [DOI: 10.1007/s11655-010-0566-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2009] [Indexed: 11/27/2022]
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33
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Richard E, Jorge-Finnigan A, Garcia-Villoria J, Merinero B, Desviat LR, Gort L, Briones P, Leal F, Pérez-Cerdá C, Ribes A, Ugarte M, Pérez B. Genetic and cellular studies of oxidative stress in methylmalonic aciduria (MMA) cobalamin deficiency type C (cblC) with homocystinuria (MMACHC). Hum Mutat 2010; 30:1558-66. [PMID: 19760748 DOI: 10.1002/humu.21107] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Methylmalonic aciduria (MMA) cobalamin deficiency type C (cblC) with homocystinuria (MMACHC) is the most frequent genetic disorder of vitamin B(12) metabolism. The aim of this work was to identify the mutational spectrum in a cohort of cblC-affected patients and the analysis of the cellular oxidative stress and apoptosis processes, in the presence or absence of vitamin B(12). The mutational spectrum includes nine previously described mutations: c.3G>A (p.M1L), c.217C>T (p.R73X), c.271dupA (p.R91KfsX14), c.331C>T (p.R111X), c.394C>T (p.R132X), c.457C>T (p.R153X), c.481C>T (p.R161X), c.565C>A (p.R189S), and c.615C>G (p.Y205X), and two novel changes, c.90G>A (p.W30X) and c.81+2T>G (IVS1+2T>G). The most frequent change was the known c.271dupA mutation, which accounts for 85% of the mutant alleles characterized in this cohort of patients. Owing to its high frequency, a real-time PCR and subsequent high-resolution melting (HRM) analysis for this mutation has been established for diagnostic purposes. All cell lines studied presented a significant increase of intracellular reactive oxygen species (ROS) content, and also a high rate of apoptosis, suggesting that elevated ROS levels might induce apoptosis in cblC patients. In addition, ROS levels decreased in hydroxocobalamin-incubated cells, indicating that cobalamin might either directly or indirectly act as a scavenger of ROS. ROS production might be considered as a phenotypic modifier in cblC patients, and cobalamin supplementation or additional antioxidant drugs might suppress apoptosis and prevent cellular damage in these patients.
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Affiliation(s)
- Eva Richard
- Centro de Diagnóstico de Enfermedades Moleculares, Centro de Biología Molecular-Severo Ochoa (SO) Universidad Autónoma de Madrid (UAM)-Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid, Campus de Cantoblanco, Madrid, Spain
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34
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Qiang H. Panax notoginseng saponins protect rabbit bone marrow stromal cells from hydrogen peroxide-induced apoptosis. ACTA ACUST UNITED AC 2010; 8:131-7. [DOI: 10.3736/jcim20100207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Kondo H, Yumoto K, Alwood JS, Mojarrab R, Wang A, Almeida EAC, Searby ND, Limoli CL, Globus RK. Oxidative stress and gamma radiation-induced cancellous bone loss with musculoskeletal disuse. J Appl Physiol (1985) 2010; 108:152-61. [PMID: 19875718 PMCID: PMC2885070 DOI: 10.1152/japplphysiol.00294.2009] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Accepted: 10/23/2009] [Indexed: 11/22/2022] Open
Abstract
Exposure of astronauts in space to radiation during weightlessness may contribute to subsequent bone loss. Gamma irradiation of postpubertal mice rapidly increases the number of bone-resorbing osteoclasts and causes bone loss in cancellous tissue; similar changes occur in skeletal diseases associated with oxidative stress. Therefore, we hypothesized that increased oxidative stress mediates radiation-induced bone loss and that musculoskeletal disuse changes the sensitivity of cancellous tissue to radiation exposure. Musculoskeletal disuse by hindlimb unloading (1 or 2 wk) or total body gamma irradiation (1 or 2 Gy of (137)Cs) of 4-mo-old, male C57BL/6 mice each decreased cancellous bone volume fraction in the proximal tibiae and lumbar vertebrae. The extent of radiation-induced acute cancellous bone loss in tibiae and lumbar vertebrae was similar in normally loaded and hindlimb-unloaded mice. Similarly, osteoclast surface in the tibiae increased 46% as a result of irradiation, 47% as a result of hindlimb unloading, and 64% as a result of irradiation + hindlimb unloading compared with normally loaded mice. Irradiation, but not hindlimb unloading, reduced viability and increased apoptosis of marrow cells and caused oxidative damage to lipids within mineralized tissue. Irradiation also stimulated generation of reactive oxygen species in marrow cells. Furthermore, injection of alpha-lipoic acid, an antioxidant, mitigated the acute bone loss caused by irradiation. Together, these results showed that disuse and gamma irradiation, alone or in combination, caused a similar degree of acute cancellous bone loss and shared a common cellular mechanism of increased bone resorption. Furthermore, irradiation, but not disuse, may increase the number of osteoclasts and the extent of acute bone loss via increased reactive oxygen species production and ensuing oxidative damage, implying different molecular mechanisms. The finding that alpha-lipoic acid protected cancellous tissue from the detrimental effects of irradiation has potential relevance to astronauts and radiotherapy patients.
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Affiliation(s)
- Hisataka Kondo
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA 94035-1000, USA
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36
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An Evaluation of the Stability and Pharmacokinetics of R-Lipoic Acid and R-Dihydrolipoic Acid Dosage Forms in Human Plasma from Healthy Subjects. ACTA ACUST UNITED AC 2009. [DOI: 10.1201/9781420045390.ch10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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37
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Qiang H, Gao P, Zhang C, Shi Z, Wang T, Wang L, Wang K. Effects of Panax notoginseng saponins on apoptosis induced by hydrogen peroxide in cultured rabbit bone marrow stromal cells via altering the oxidative stress level and down-regulating caspase-3. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s1007-4376(09)60085-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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38
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Wauquier F, Leotoing L, Coxam V, Guicheux J, Wittrant Y. Oxidative stress in bone remodelling and disease. Trends Mol Med 2009; 15:468-77. [PMID: 19811952 DOI: 10.1016/j.molmed.2009.08.004] [Citation(s) in RCA: 328] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Revised: 07/25/2009] [Accepted: 08/05/2009] [Indexed: 01/18/2023]
Abstract
Oxidative stress is characterised by an increased level of reactive oxygen species (ROS) that disrupts the intracellular reduction-oxidation (redox) balance. Although initially shown to be involved in aging, physiological roles for ROS in regulating cell functions and mediating intracellular signals have emerged. In bone tissues, recent studies have demonstrated that ROS generation is a key modulator of bone cell function and that oxidative status influences the pathophysiology of mineralised tissues. Here, we review the crucial role of oxidative stress in bone pathophysiology, and discuss the possibility that ROS production might be a relevant therapeutic target under certain conditions. Further studies will be needed to investigate whether manipulation of the redox balance in bone cells represents a useful approach in the design of future therapies for bone diseases.
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Affiliation(s)
- Fabien Wauquier
- Inra, UMR 1019 Nutrition Humaine, F-63122 Saint Genès Champanelle, France
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39
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Kim YS, Koh JM, Lee YS, Kim BJ, Lee SH, Lee KU, Kim GS. Increased circulating heat shock protein 60 induced by menopause, stimulates apoptosis of osteoblast-lineage cells via up-regulation of toll-like receptors. Bone 2009; 45:68-76. [PMID: 19306954 DOI: 10.1016/j.bone.2009.03.658] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Revised: 02/24/2009] [Accepted: 03/08/2009] [Indexed: 10/21/2022]
Abstract
Postmenopausal osteoporosis is a heterogeneous disorder characterized by accelerated bone loss after natural or surgical menopause and an increased risk of fractures. The bone loss in estrogen deficiency results from the increased bone resorption and impaired ability of osteoblastic bone formation. Previous studies have reported that the HSP60 stimulates osteoclast formation and bone resorption. Here we found that plasma HSP60 levels were significantly higher in postmenopausal (median 1152.4 ng/ml; range 724.7-2123.4 ng/ml) than in premenopausal (median 316.3 ng/ml; range 164.6-638.4 ng/ml) women. In primary human bone marrow stromal cells (hBMSC) and the HS-5 hBMSC cell line, HSP60 significantly reduced cell viability and increased caspase-dependent apoptosis. Consistent with these observations, HSP60 activated caspase-3 and -9, but not caspase-8 in HS-5 cells, and increased the release of mitochondrial cytochrome c into the cytosol. In addition, HSP60 activated p38 and NFkappaB, but not ERK or JNK; importantly, inhibitors of p38 (SB203580) and NFkappaB (PDTC) abolished HSP60-induced apoptosis. Furthermore, Western blotting showed that HSP60 up-regulated TLR-2 and TLR-4 expression, and pretreatment with blocking antibodies for TLR-2 and TLR-4 almost completely eliminated the effects of HSP60 on apoptosis, caspase-3 and -9 activation, and activation of NFkappaB and p38 MAPK. Most notably, ovariectomy-induced bone loss was attenuated in TLR-2 KO mice. In conclusion, up-regulation of TLR-2 by HSP60 may play a critical role in promoting bone loss in the estrogen-deficient state.
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Affiliation(s)
- Yang Soon Kim
- Asan Institute for Life Sciences, Seoul, Republic of Korea
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40
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Lin CC, Metters AT, Anseth KS. Functional PEG-peptide hydrogels to modulate local inflammation induced by the pro-inflammatory cytokine TNFalpha. Biomaterials 2009; 30:4907-14. [PMID: 19560813 DOI: 10.1016/j.biomaterials.2009.05.083] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Accepted: 05/30/2009] [Indexed: 01/31/2023]
Abstract
Hydrogels are an important class of biomaterials for cell encapsulation and delivery, providing a physical barrier or "immuno-isolation" between the host tissue and encapsulated cells. The semi-permeable gel protects the encapsulated cells from host immune cells and/or antibody recognition while allowing facile diffusion of nutrients. However, a previously un-addressed problem is that highly permissive hydrogels cannot exclude the infiltration of soluble immune-mediators, such as pro-inflammatory cytokines that are highly expressed in wounded environments in vivo. When encountered with pro-inflammatory cytokines, encapsulated cells fail to perform their desired functions. Here, we report the synthesis, characterization, and application of peptide-functionalized, cytokine-antagonizing poly(ethylene glycol) (PEG) hydrogels capable of sequestering the pro-inflammatory cytokine, tumor necrosis factor alpha (TNFalpha). Results demonstrate that the survival, function, and differentiation of encapsulated cells (e.g., rat adrenal pheochromocytoma cells--PC12s, mouse pancreatic islets, and human mesenchymal stem cells or hMSCs) are significantly hindered in un-modified PEG hydrogels under in vitro TNFalpha treatments. In contrast, cells encapsulated in TNFalpha-antagonizing hydrogels are un-affected by the infiltrated TNFalpha. This study demonstrates the importance of controlling the availability of pro-inflammatory cytokines in highly permissive hydrogels.
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Affiliation(s)
- Chien-Chi Lin
- Department of Chemical and Biological Engineering, University of Colorado, 424 UCB, Boulder, CO 80309, USA
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Lee BW, Kwon SJ, Chae HY, Kang JG, Kim CS, Lee SJ, Yoo HJ, Kim JH, Park KS, Ihm SH. Dose-related cytoprotective effect of alpha-lipoic acid on hydrogen peroxide-induced oxidative stress to pancreatic beta cells. Free Radic Res 2009; 43:68-77. [PMID: 19358002 DOI: 10.1080/10715760802590400] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
alpha-Lipoic acid (alpha-LA), an antioxidant used for diabetic polyneuropathy, was reported to induce AMP-activated protein kinase activation and reductions in insulin secretion in pancreatic beta-cells at high concentrations (> or = 500 micromol/l). This study investigated whether alpha-LA has a protective role under oxidative stress in beta-cells and its effect is dose-related. In INS-1 cells treated with alpha-LA (150-1200 micromol/l) for 24 h, alpha-LA itself (> or = 300 micromol/l) induced apoptotic death dose-dependently. However, pre-treatment with 150 and 300 micromol/l alpha-LA reduced the hydrogen peroxide-induced apoptosis in INS-1 cells and isolated islets. alpha-LA alleviated hydrogen peroxide-induced reactive oxygen species production, mitochondrial membrane depolarization and c-JNK activation in beta-cells. alpha-LA induced phosphoinositide 3-kinase-dependent Akt phosphorylation in INS-1 cells. While alpha-LA is harmful to beta-cells at high concentrations in vitro, it has potential cytoprotective effects on beta-cells under oxidative stress as in diabetes by its antioxidant properties and possibly by Akt phosphorylation at clinically relevant concentrations.
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Affiliation(s)
- Byung Wan Lee
- Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Republic of Korea
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42
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Linares GR, Xing W, Govoni KE, Chen ST, Mohan S. Glutaredoxin 5 regulates osteoblast apoptosis by protecting against oxidative stress. Bone 2009; 44:795-804. [PMID: 19442627 PMCID: PMC4683083 DOI: 10.1016/j.bone.2009.01.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2008] [Revised: 11/19/2008] [Accepted: 01/05/2009] [Indexed: 11/17/2022]
Abstract
There is now increasing evidence which suggests an important role for reactive oxygen species (ROS) in the pathogenesis of osteoporosis. However, little is known on the molecular components of the oxidative stress pathway or their functions in bone. In this study, we evaluated the role and mechanism of action of glutaredoxin (Grx) 5, a protein that is highly expressed in bone. Osteoblasts were transfected with Grx5 siRNA and treated with hydrogen peroxide (H(2)O(2)). Grx5 siRNA treatment increased apoptosis while Grx5 overexpression protected MC3T3-E1 cells against H(2)O(2) induced apoptosis and ROS formation. Grx5 deficiency results in impaired biogenesis of Fe-S cluster in yeast. Accordingly, activity of mitochondrial aconitase, whose activity is dependent on Fe-S cluster, decreased in Grx5 siRNA treated cells. Since reduced formation of Fe-S cluster would lead to increased level of free iron, a competitive inhibitor of manganese superoxide dismutase (MnSOD), we measured MnSOD activity in Grx5 deficient osteoblasts and found MnSOD activity was significantly reduced. The consequence of long term inhibition of Grx5 on osteoblast apoptosis was evaluated using lentiviral shRNA technology. Grx5 shRNA cells exhibited higher caspase activity and cardiolipin oxidation in the presence of H(2)O(2). MnSOD activity was rescued by the addition of MnCl(2) to Grx5 shRNA osteoblasts in the presence of H(2)O(2). Our findings are consistent with the hypothesis that Grx5 is an important determinant of osteoblast apoptosis and acts via a molecular pathway that involves regulation of ROS production, cardiolipin oxidation, caspase activity, Fe-S cluster formation, and MnSOD activity.
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Affiliation(s)
- Gabriel R Linares
- Musculoskeletal Disease Center, Jerry L Pettis Memorial Veterans Affairs Medical Center, Loma Linda, CA 92357, USA
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43
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Du JQ, Wu J, Zhang HJ, Zhang YH, Qiu BY, Wu F, Chen YH, Li JY, Nan FJ, Ding JP, Li J. Isoquinoline-1,3,4-trione derivatives inactivate caspase-3 by generation of reactive oxygen species. J Biol Chem 2008; 283:30205-15. [PMID: 18768468 DOI: 10.1074/jbc.m803347200] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Caspase-3 is an attractive therapeutic target for treatment of diseases involving disregulated apoptosis. We report here the mechanism of caspase-3 inactivation by isoquinoline-1,3,4-trione derivatives. Kinetic analysis indicates the compounds can irreversibly inactivate caspase-3 in a 1,4-dithiothreitol (DTT)- and oxygen-dependent manner, implying that a redox cycle might take place in the inactivation process. Reactive oxygen species detection experiments using a chemical indicator, together with electron spin resonance measurement, suggest that ROS can be generated by reaction of isoquinoline-1,3,4-trione derivatives with DTT. Oxygen-free radical scavenger catalase and superoxide dismutase eliciting the inactivation of caspase-3 by the inhibitors confirm that ROS mediates the inactivation process. Crystal structures of caspase-3 in complexes with isoquinoline-1,3,4-trione derivatives show that the catalytic cysteine is oxidized to sulfonic acid (-SO(3)H) and isoquinoline-1,3,4-trione derivatives are bound at the dimer interface of caspase-3. Further mutagenesis study shows that the binding of the inhibitors with caspase-3 appears to be nonspecific. Isoquinoline-1,3,4-trione derivative-catalyzed caspase-3 inactivation could also be observed when DTT is substituted with dihydrolipoic acid, which exists widely in cells and might play an important role in the in vivo inactivation process in which the inhibitors inactivate caspase-3 in cells and then prevent the cells from apoptosis. These results provide valuable information for further development of small molecular inhibitors against caspase-3 or other oxidation-sensitive proteins.
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Affiliation(s)
- Jun-Qing Du
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 189 Guo Shou Jing Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People's Republic of China
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Kim JE, Ahn MW, Baek SH, Lee IK, Kim YW, Kim JY, Dan JM, Park SY. AMPK activator, AICAR, inhibits palmitate-induced apoptosis in osteoblast. Bone 2008; 43:394-404. [PMID: 18502715 DOI: 10.1016/j.bone.2008.03.021] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2007] [Revised: 03/06/2008] [Accepted: 03/16/2008] [Indexed: 12/28/2022]
Abstract
Osteoblast apoptosis reduces bone mineral density. Apoptosis can be induced in a variety of cells by palmitate, which is one of the most common saturated fatty acids in dietary fat. The AMPK activator, AICAR, has been shown to inhibit palmitate-induced apoptosis. However, the role of palmitate in osteoblast apoptosis is currently unknown. This study examined whether palmitate could induce apoptosis in osteoblasts, and if so, whether AICAR could alleviate palmitate-induced apoptosis. Palmitate reduced cell survival and induced apoptosis in a dose- and time-dependent manner in human fetal osteoblasts (hFOB) 1.19. While the long-chain acyl-CoA synthetase inhibitor, triacsin C, inhibited palmitate-induced apoptosis, anti-oxidants and ceramide synthesis inhibitors did not attenuate the apoptosis. AICAR prevented palmitate-induced apoptosis and the inhibition of AICAR-mediated increase in fatty acid oxidation by etomoxir did not affect the prevention of apoptosis by AICAR. Constitutively-active AMPK also inhibited palmitate-induced apoptosis. Treatment with an AMPK inhibitor (compound C) and a dominant-negative AMPK adenovirus suppressed the inhibitory effect of AICAR on apoptosis. Palmitate impaired the activation of ERK by fetal bovine serum, which was blocked by AICAR. Moreover, AICAR increased ERK activation, and ERK inhibitors, PD98059 and U0126, as well as a dominant-negative MEK1, abolished the inhibitory effect of AICAR on palmitate-induced apoptosis. AICAR also inhibited palmitate-induced apoptosis in osteoblastic differentiated cells from human bone marrow, which was accompanied by recovered ERK activity. These results suggest that palmitate induces apoptosis in osteoblasts through the impaired activation of ERK, and the activation of AMPK inhibits palmitate-induced apoptosis by activating ERK.
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Affiliation(s)
- Ji-Eun Kim
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, South Korea; Aging-associated Vascular Disease Research Center, Yeungnam University, Daegu, South Korea
| | - Myun-Whan Ahn
- Department of Orthopedics, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Suk-Hwan Baek
- Aging-associated Vascular Disease Research Center, Yeungnam University, Daegu, South Korea; Department of Biochemistry and Molecular Biology, College of Medicine, Yeungnam University, Daegu, South Korea
| | - In Kyu Lee
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, South Korea
| | - Yong-Woon Kim
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Jong-Yeon Kim
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Jin-Myoung Dan
- Department of Orthopedics, College of Medicine, Pochun Cha University, Kumi, South Korea
| | - So-Young Park
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, South Korea; Aging-associated Vascular Disease Research Center, Yeungnam University, Daegu, South Korea.
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Fujita H, Shiosaka M, Ogino T, Okimura Y, Utsumi T, Sato EF, Akagi R, Inoue M, Utsumi K, Sasaki J. α-Lipoic acid suppresses 6-hydroxydopamine-induced ROS generation and apoptosis through the stimulation of glutathione synthesis but not by the expression of heme oxygenase-1. Brain Res 2008; 1206:1-12. [DOI: 10.1016/j.brainres.2008.01.081] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2007] [Revised: 12/06/2007] [Accepted: 01/22/2008] [Indexed: 01/09/2023]
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Artwohl M, Muth K, Kosulin K, de Martin R, Hölzenbein T, Rainer G, Freudenthaler A, Huttary N, Schmetterer L, Waldhäusl WK, Baumgartner-Parzer SM. R-(+)-alpha-lipoic acid inhibits endothelial cell apoptosis and proliferation: involvement of Akt and retinoblastoma protein/E2F-1. Am J Physiol Endocrinol Metab 2007; 293:E681-9. [PMID: 17566113 DOI: 10.1152/ajpendo.00584.2006] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Lipoic acid was recently demonstrated to improve endothelial dysfunction or retinopathy not only in rats but also in diabetic patients. We tested the hypothesis that R-(+)-alpha-lipoic acid (LA) directly affects human endothelial cell (EC) function (e.g., apoptosis, proliferation, and protein expression), independent of the cells' vascular origin. Macrovascular EC (macEC), isolated from umbilical (HUVEC) and adult saphenous veins and from aortae, as well as microvascular EC (micEC) from retinae, skin, and uterus, were exposed to LA (1 mumol/l-1 mmol/l) with/without different stimuli (high glucose, TNF-alpha, VEGF, wortmannin, LY-294002). Apoptosis, proliferation, cell cycle distribution, and protein expression were determined by DNA fragmentation assays, [(3)H]thymidine incorporation, FACS, and Western blot analyses, respectively. In macro- and microvascular EC, LA (1 mmol/l) reduced (P < 0.05) basal (macEC, -36 +/- 4%; micEC, -46 +/- 6%) and stimulus-induced (TNF-alpha: macEC, -75 +/- 11%; micEC, -68 +/- 13%) apoptosis. In HUVEC, inhibition of apoptosis by LA (500 mumol/l) was paralleled by reduction of NF-kappaB. LA's antiapoptotic activity was reduced by PI 3-kinase inhibitors (wortmannin, LY-294002), being in line with LA-induced Akt phosphorylation (Ser(437), +159 +/- 43%; Thr(308), +98 +/- 25%; P < 0.01). LA (500 mumol/l) inhibited (P < 0.001) proliferation of macEC (-29 +/- 3%) and micEC (-29 +/- 3%) by arresting the cells at the G(1)/S transition due to an increased ratio of cyclin E/p27(Kip) (4.2-fold), upregulation of p21(WAF-1/Cip1) (+104 +/- 21%), and reduction of cyclin A (-32 +/- 11%), of hyperphosphorylated retinoblastoma protein (macEC: -51 +/- 7%; micEC: -50 +/- 15%), and of E2F-1 (macEC: -48 +/- 3%; micEC: -31 +/- 10%). LA's ability to inhibit apoptosis and proliferation of ECs could beneficially affect endothelial dysfunction, which precedes manifestation of late diabetic vascular complications.
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Affiliation(s)
- Michaela Artwohl
- Department of Internal Medicine III, Division of Endocrinology and Metabolism, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria
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Primary human osteoblasts and bone cancer cells as models to study glycodynamics in bone. Int J Biochem Cell Biol 2007; 40:471-83. [PMID: 17931955 DOI: 10.1016/j.biocel.2007.08.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2007] [Revised: 07/24/2007] [Accepted: 08/21/2007] [Indexed: 01/01/2023]
Abstract
Bone cells produce many glycoproteins potentially involved in the maintenance of healthy bone tissues. Two cytokines produced in inflamed joints, tumor necrosis factor (TNF)alpha and transforming growth factor (TGF)beta, have previously been shown to alter cellular glycosylation which may potentially affect the expression and function of glycoproteins. In order to evaluate models to study the glycodynamics of bone cells, we examined primary human osteoblastic cells from osteoarthritis patients, and compared these to human osteosarcoma cells MG63 and SJSA-1. We showed here for the first time that all of the human osteoblastic cells actively synthesize complex N- and O-glycan chains of bone cell glycoproteins, with quantitative differences between cell types. TNFalpha-induced apoptosis or TGFbeta-induced cell differentiation and proliferation had significant effects on both cell surface carbohydrates and glycosyltransferase activities of osteoblasts and osteosarcoma cells. The results indicate that cultured human bone-derived osteoblastic cells are good models to examine the glycodynamics of osteoblasts under conditions of cell growth and cell death. The changes induced by cytokines can result in altered cell surface functions which may be of importance in osteoarthritis, osteoporosis and other bone diseases.
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Kim DJ, Koh JM, Lee O, Kim NJ, Lee YS, Kim YS, Park JY, Lee KU, Kim GS. Homocysteine enhances apoptosis in human bone marrow stromal cells. Bone 2006; 39:582-90. [PMID: 16644300 DOI: 10.1016/j.bone.2006.03.004] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2005] [Revised: 03/13/2006] [Accepted: 03/15/2006] [Indexed: 11/25/2022]
Abstract
INTRODUCTION High plasma homocysteine (Hcy) levels have been associated with increased risk of fracture. Since Hcy has been shown to induce apoptosis in many cell types, including vascular endothelial cells, we hypothesized that Hcy would have a similar apoptotic effect on osteoblasts, leading to osteoporosis by reducing bone formation. MATERIALS AND METHODS Using primary human bone marrow stromal cells (hBMSC) and HS-5 cell line (human bone marrow stromal cell line), we investigated the effects of Hcy on these cells by cell viability assay and analysis of cytoplasmic histone-associated DNA fragments. Caspase activity assay, Western blots, and electrophoresis mobility shift assay (EMSA) were performed to find the mechanism of apoptosis. Intracellular reactive oxygen species (ROS) were measured by spectrometry using dichlorofluorescein diacetate, and cellular total glutathione level was determined by a commercially available kit. N-acetylcysteine (NAC) and pyrrolidine dithiocarbamate (PDTC) were used as tools for investigating the role of ROS and nuclear factor-kappaB (NF-kappaB), respectively. RESULTS Hcy induced apoptosis in primary human bone marrow stromal cells and the HS-5 cell line, and this apoptotic effect was caspase-dependent. In addition, Hcy increased cytochrome c release into the cytosol, and activated caspase-9 and caspase-3, but not caspase-8, indicating that Hcy induces apoptosis via the mitochondria pathway. Hcy increased ROS, and NAC inhibited the apoptotic effect of Hcy. Western blot and EMSA showed that Hcy activated the NF-kappaB pathway. PDTC blocked Hcy-induced caspase-3 activation and apoptosis. CONCLUSION These results suggest that Hcy induces apoptosis via the ROS-mediated mitochondrial pathway and NF-kappaB activation in hBMSCs, and that Hcy may contribute to the development of osteoporosis by reducing bone formation. Antioxidants may have a role in preventing bone loss in individuals with hyperhomocysteinemia.
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Affiliation(s)
- Duk Jae Kim
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-Dong, Songpa-Gu, Seoul 138-736, Republic of Korea
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Kim HJ, Chang EJ, Kim HM, Lee SB, Kim HD, Su Kim G, Kim HH. Antioxidant alpha-lipoic acid inhibits osteoclast differentiation by reducing nuclear factor-kappaB DNA binding and prevents in vivo bone resorption induced by receptor activator of nuclear factor-kappaB ligand and tumor necrosis factor-alpha. Free Radic Biol Med 2006; 40:1483-93. [PMID: 16632109 DOI: 10.1016/j.freeradbiomed.2005.10.066] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2005] [Revised: 10/03/2005] [Accepted: 10/26/2005] [Indexed: 10/25/2022]
Abstract
The relationship between oxidative stress and bone mineral density or osteoporosis has recently been reported. As bone loss occurring in osteoporosis and inflammatory diseases is primarily due to increases in osteoclast number, reactive oxygen species (ROS) may be relevant to osteoclast differentiation, which requires receptor activator of nuclear factor-kappaB ligand (RANKL). Tumor necrosis factor-alpha (TNF-alpha) frequently present in inflammatory conditions has a profound synergy with RANKL in osteoclastogenesis. In this study, we investigated the effects of alpha-lipoic acid (alpha-LA), a strong antioxidant clinically used for some time, on osteoclast differentiation and bone resorption. At concentrations showing no growth inhibition, alpha-LA potently suppressed osteoclastogenesis from bone marrow-derived precursor cells driven either by a high-dose RANKL alone or by a low-dose RANKL plus TNF-alpha (RANKL/TNF-alpha). alpha-LA abolished ROS elevation by RANKL or RANKL/TNF-alpha and inhibited NF-kappaB activation in osteoclast precursor cells. Specifically, alpha-LA reduced DNA binding of NF-kappaB but did not inhibit IKK activation. Furthermore, alpha-LA greatly suppressed in vivo bone loss induced by RANKL or TNF-alpha in a calvarial remodeling model. Therefore, our data provide evidence that ROS plays an important role in osteoclast differentiation through NF-kappaB regulation and the antioxidant alpha-lipoic acid has a therapeutic potential for bone erosive diseases.
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Affiliation(s)
- Hyon Jong Kim
- Department of Cell and Developmental Biology, Brain Korea 21 Program, and Dental Research Institute, Seoul National University School of Dentistry, 28 Yeongon-Dong, Chongno-Gu, Seoul 110-749, Korea
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