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Guan T, Guo Y, Zhou T, Yu Q, Sun J, Sun B, Zhang G, Kong J. Oxidized SOD1 accelerates cellular senescence in neural stem cells. Stem Cell Res Ther 2024; 15:55. [PMID: 38414053 PMCID: PMC10900543 DOI: 10.1186/s13287-024-03669-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 02/16/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND Neural stem cells (NSCs), especially human NSCs, undergo cellular senescence characterized by an irreversible proliferation arrest and loss of stemness after prolonged culture. While compelling correlative data have been generated to support the oxidative stress theory as one of the primary determinants of cellular senescence of NSCs, a direct cause-and-effect relationship between the accumulation of oxidation-mediated damage and cellular senescence of NSCs has yet to be firmly established. Human SOD1 (hSOD1) is susceptible to oxidation. Once oxidized, it undergoes aberrant misfolding and gains toxic properties associated with age-related neurodegenerative disorders. The present study aims to examine the role of oxidized hSOD1 in the senescence of NSCs. METHODS NSCs prepared from transgenic mice expressing the wild-type hSOD1 gene were maintained in culture through repeated passages. Extracellular vesicles (EVs) were isolated from culture media at each passage. To selectively knock down oxidized SOD1 in NSCs and EVs, we used a peptide-directed chaperone-mediated protein degradation system named CT4 that we developed recently. RESULTS In NSCs expressing the hSOD1 from passage 5, we detected a significant increase of oxidized hSOD1 and an increased expression of biomarkers of cellular senescence, including upregulation of P53 and SA-β-Gal and cytoplasmic translocation of HMGB1. The removal of oxidized SOD1 remarkably increased the proliferation and stemness of the NSCs. Meanwhile, EVs derived from senescent NSCs carrying the wild-type hSOD1 contained high levels of oxidized hSOD1, which could accelerate the senescence of young NSCs and induce the death of cultured neurons. The removal of oxidized hSOD1 from the EVs abolished their senescence-inducing activity. Blocking oxidized SOD1 on EVs with the SOD1 binding domain of the CT4 peptide mitigated its toxicity to neurons. CONCLUSION Oxidized hSOD1 is a causal factor in the cellular senescence of NSCs. The removal of oxidized hSOD1 is a strategy to rejuvenate NSCs and to improve the quality of EVs derived from senescent cells.
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Affiliation(s)
- Teng Guan
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada
| | - Ying Guo
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, Hebei, China
| | - Ting Zhou
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada
- Department of Pharmacy, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiang Yu
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada
| | - Jingyi Sun
- Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, Shandong, China
| | - Baoliang Sun
- Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, Shandong, China
| | - Guohui Zhang
- Department of Forensic Medicine, Hebei North University, Zhangjiakou, Hebei, China
| | - Jiming Kong
- Department of Human Anatomy and Cell Science, University of Manitoba, Winnipeg, MB, Canada.
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Andrade AC, Wolf M, Binder HM, Gomes FG, Manstein F, Ebner-Peking P, Poupardin R, Zweigerdt R, Schallmoser K, Strunk D. Hypoxic Conditions Promote the Angiogenic Potential of Human Induced Pluripotent Stem Cell-Derived Extracellular Vesicles. Int J Mol Sci 2021; 22:ijms22083890. [PMID: 33918735 PMCID: PMC8070165 DOI: 10.3390/ijms22083890] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 12/11/2022] Open
Abstract
Stem cells secrete paracrine factors including extracellular vesicles (EVs) which can mediate cellular communication and support the regeneration of injured tissues. Reduced oxygen (hypoxia) as a key regulator in development and regeneration may influence cellular communication via EVs. We asked whether hypoxic conditioning during human induced pluripotent stem cell (iPSC) culture effects their EV quantity, quality or EV-based angiogenic potential. We produced iPSC-EVs from large-scale culture-conditioned media at 1%, 5% and 18% air oxygen using tangential flow filtration (TFF), with or without subsequent concentration by ultracentrifugation (TUCF). EVs were quantified by tunable resistive pulse sensing (TRPS), characterized according to MISEV2018 guidelines, and analyzed for angiogenic potential. We observed superior EV recovery by TFF compared to TUCF. We confirmed hypoxia efficacy by HIF-1α stabilization and pimonidazole hypoxyprobe. EV quantity did not differ significantly at different oxygen conditions. Significantly elevated angiogenic potential was observed for iPSC-EVs derived from 1% oxygen culture by TFF or TUCF as compared to EVs obtained at higher oxygen or the corresponding EV-depleted soluble factor fractions. Data thus demonstrate that cell-culture oxygen conditions and mode of EV preparation affect iPSC-EV function. We conclude that selecting appropriate protocols will further improve production of particularly potent iPSC-EV-based therapeutics.
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Affiliation(s)
- André Cronemberger Andrade
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (A.C.A.); (M.W.); (H.-M.B.); (P.E.-P.); (R.P.)
| | - Martin Wolf
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (A.C.A.); (M.W.); (H.-M.B.); (P.E.-P.); (R.P.)
| | - Heide-Marie Binder
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (A.C.A.); (M.W.); (H.-M.B.); (P.E.-P.); (R.P.)
| | - Fausto Gueths Gomes
- Department of Transfusion Medicine and SCI-TReCS, Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (F.G.G.); (K.S.)
| | - Felix Manstein
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, 30625 Hannover, Germany; (F.M.); (R.Z.)
| | - Patricia Ebner-Peking
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (A.C.A.); (M.W.); (H.-M.B.); (P.E.-P.); (R.P.)
| | - Rodolphe Poupardin
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (A.C.A.); (M.W.); (H.-M.B.); (P.E.-P.); (R.P.)
| | - Robert Zweigerdt
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, 30625 Hannover, Germany; (F.M.); (R.Z.)
| | - Katharina Schallmoser
- Department of Transfusion Medicine and SCI-TReCS, Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (F.G.G.); (K.S.)
| | - Dirk Strunk
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria; (A.C.A.); (M.W.); (H.-M.B.); (P.E.-P.); (R.P.)
- Correspondence:
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Leister I, Linde LD, Vo AK, Haider T, Mattiassich G, Grassner L, Schaden W, Resch H, Jutzeler CR, Geisler FH, Kramer JLK, Aigner L. Routine Blood Chemistry Predicts Functional Recovery After Traumatic Spinal Cord Injury: A Post Hoc Analysis. Neurorehabil Neural Repair 2021; 35:321-333. [PMID: 33615895 DOI: 10.1177/1545968321992328] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Spinal cord injury (SCI) leads to various degrees of lifelong functional deficits. Most individuals with incomplete SCI experience a certain degree of functional recovery, especially within the first-year postinjury. However, this is difficult to predict, and surrogate biomarkers are urgently needed. OBJECTIVE We aimed to (1) determine if routine blood chemistry parameters are related to neurological recovery after SCI, (2) evaluate if such parameters could predict functional recovery, and (3) establish cutoff values that could inform clinical decision-making. METHODS We performed a post hoc analysis of routine blood chemistry parameters in patients with traumatic SCI (n = 676). Blood samples were collected between 24 and 72 hours as well as at 1, 2, 4, 8, and 52 weeks postinjury. Linear mixed models, regression analysis, and unbiased recursive partitioning (URP) of blood chemistry data were used to relate to and predict walking recovery 1 year postinjury. RESULTS The temporal profile of platelet counts and serum levels of albumin, alkaline phosphatase, and creatinine differentiated patients who recovered walking from those who remained wheelchair bound. The 4 blood chemistry parameters from the sample collection 8 weeks postinjury predicted functional recovery observed 1 year after incomplete SCI. Finally, URP defined a cutoff for serum albumin at 3.7 g/dL, which in combination with baseline injury severity differentiates individuals who regain ambulation from those not able to walk. Specifically, about 80% of those with albumin >3.7 g/dL recovered walking. CONCLUSIONS Routine blood chemistry data from the postacute phase, together with baseline injury severity, predict functional outcome after incomplete SCI.
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Affiliation(s)
- Iris Leister
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria.,Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), and ParaMove, Paracelsus Medical University, Salzburg, Austria.,International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada
| | - Lukas D Linde
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada
| | - Anh Khoa Vo
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada
| | - Thomas Haider
- Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
| | - Georg Mattiassich
- Ludwig-Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Traumacenter Graz, Teaching Hospital of the Medical University Graz, Graz, Austria
| | - Lukas Grassner
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria.,Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), and ParaMove, Paracelsus Medical University, Salzburg, Austria.,Department of Neurosurgery, Medical University Innsbruck, Innsbruck, Austria.,Department of Paraplegiology, BG Trauma Center Murnau, Murnau, Germany.,ParaMove, Paracelsus Medical University Salzburg, Austria, and Department of Paraplegiology, BG Trauma Center Murnau, Murnau, Germany
| | - Wolfgang Schaden
- Ludwig-Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,AUVA Trauma Center Meidling, Vienna, Austria
| | - Herbert Resch
- Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), and ParaMove, Paracelsus Medical University, Salzburg, Austria
| | - Catherine R Jutzeler
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.,Spinal Cord Injury Center, University Hospital Balgrist, University of Zurich, Zurich, Switzerland.,Department of Biosystems Science and Engineering, Swiss Federal Institute, Basel, Switzerland
| | - Fred H Geisler
- College of Medicine at the University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - John L K Kramer
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.,Shared senior-authorship
| | - Ludwig Aigner
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University, Salzburg, Austria.,Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), and ParaMove, Paracelsus Medical University, Salzburg, Austria.,Austrian Cluster for Tissue Regeneration.,ParaMove, Paracelsus Medical University Salzburg, Austria, and Department of Paraplegiology, BG Trauma Center Murnau, Murnau, Germany.,Shared senior-authorship
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4
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Kandasamy M, Anusuyadevi M, Aigner KM, Unger MS, Kniewallner KM, de Sousa DMB, Altendorfer B, Mrowetz H, Bogdahn U, Aigner L. TGF-β Signaling: A Therapeutic Target to Reinstate Regenerative Plasticity in Vascular Dementia? Aging Dis 2020; 11:828-850. [PMID: 32765949 PMCID: PMC7390515 DOI: 10.14336/ad.2020.0222] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/22/2020] [Indexed: 12/11/2022] Open
Abstract
Vascular dementia (VaD) is the second leading form of memory loss after Alzheimer's disease (AD). Currently, there is no cure available. The etiology, pathophysiology and clinical manifestations of VaD are extremely heterogeneous, but the impaired cerebral blood flow (CBF) represents a common denominator of VaD. The latter might be the result of atherosclerosis, amyloid angiopathy, microbleeding and micro-strokes, together causing blood-brain barrier (BBB) dysfunction and vessel leakage, collectively originating from the consequence of hypertension, one of the main risk factors for VaD. At the histopathological level, VaD displays abnormal vascular remodeling, endothelial cell death, string vessel formation, pericyte responses, fibrosis, astrogliosis, sclerosis, microglia activation, neuroinflammation, demyelination, white matter lesions, deprivation of synapses and neuronal loss. The transforming growth factor (TGF) β has been identified as one of the key molecular factors involved in the aforementioned various pathological aspects. Thus, targeting TGF-β signaling in the brain might be a promising therapeutic strategy to mitigate vascular pathology and improve cognitive functions in patients with VaD. This review revisits the recent understanding of the role of TGF-β in VaD and associated pathological hallmarks. It further explores the potential to modulate certain aspects of VaD pathology by targeting TGF-β signaling.
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Affiliation(s)
- Mahesh Kandasamy
- Laboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India.
- Faculty Recharge Programme, University Grants Commission (UGC-FRP), New Delhi, India.
| | - Muthuswamy Anusuyadevi
- Molecular Gerontology Group, Department of Biochemistry, School of Life Sciences, Bharathidhasan University, Tiruchirappalli, Tamil Nadu, India.
| | - Kiera M Aigner
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
| | - Michael S Unger
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
| | - Kathrin M Kniewallner
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
| | - Diana M Bessa de Sousa
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
| | - Barbara Altendorfer
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
| | - Heike Mrowetz
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
| | - Ulrich Bogdahn
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
- Velvio GmbH, Regensburg, Germany.
| | - Ludwig Aigner
- Institute of Molecular Regenerative Medicine, Salzburg, Paracelsus Medical University.
- Spinal Cord Injury and Tissue Regeneration Center, Salzburg, Paracelsus Medical University, Salzburg, Austria.
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
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5
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Chae SY, Shrestha KR, Jeong SN, Park G, Yoo SY. Bioinspired RGD-Engineered Bacteriophage Nanofiber Cues against Oxidative Stress. Biomacromolecules 2019; 20:3658-3671. [DOI: 10.1021/acs.biomac.9b00640] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Seon Yeong Chae
- BIO-IT Foundry
Technology Institute, Pusan National University, Busan 46241, Republic of Korea
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Republic of Korea
| | - Kshitiz Raj Shrestha
- BIO-IT Foundry
Technology Institute, Pusan National University, Busan 46241, Republic of Korea
- Research Institute
for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea
| | - Su-Nam Jeong
- BIO-IT Foundry
Technology Institute, Pusan National University, Busan 46241, Republic of Korea
- Research Institute
for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea
| | - Geuntae Park
- BIO-IT Foundry
Technology Institute, Pusan National University, Busan 46241, Republic of Korea
- Department of Nano Fusion Technology, Pusan National University, Busan 46241, Republic of Korea
| | - So Young Yoo
- BIO-IT Foundry
Technology Institute, Pusan National University, Busan 46241, Republic of Korea
- Research Institute
for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea
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