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Mikhailov A, Sankai Y. Apoptosis in Postmortal Tissues of Goat Spinal Cords and Survival of Resident Neural Progenitors. Int J Mol Sci 2024; 25:4683. [PMID: 38731901 PMCID: PMC11083117 DOI: 10.3390/ijms25094683] [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: 02/21/2024] [Revised: 04/07/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Growing demand for therapeutic tissue repair recurrently focusses scientists' attention on critical assessment of postmortal collection of live cells, especially stem cells. Our study aimed to assess the survival of neuronal progenitors in postmortal spinal cord and their differentiation potential. Postmortal samples of spinal cords were obtained from human-sized animals (goats) at 6, 12, 24, 36, and 54 h after slaughter. Samples were studied by immunohistology, differentiation assay, Western blot and flow cytometry for the presence and location of GD2-positive neural progenitors and their susceptibility to cell death. TUNEL staining of the goat spinal cord samples over 6-54 h postmortem revealed no difference in the number of positive cells per cross-section. Many TUNEL-positive cells were located in the gray commissure around the central canal of the spinal cord; no increase in TUNEL-positive cells was recorded in either posterior or anterior horns of the gray matter where many GD2-positive neural progenitors can be found. The active caspase 3 amount as measured by Western blot at the same intervals was moderately increasing over time. Neuronal cells were enriched by magnetic separation with antibodies against CD24; among them, the GD2-positive neural progenitor subpopulation did not overlap with apoptotic cells having high pan-caspase activity. Apoptotic cell death events are relatively rare in postmortal spinal cords and are not increased in areas of the neural progenitor cell's location, within measured postmortal intervals, or among the CD24/GD2-positive cells. Data from our study suggest postmortal spinal cords as a valuable source for harvesting highly viable allogenic neural progenitor cells.
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Affiliation(s)
- Andrey Mikhailov
- Center for Cybernics Research, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Yoshiyuki Sankai
- Faculty of Engineering, Information and Systems, University of Tsukuba, Tsukuba 305-8573, Japan;
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New Sources, Differentiation, and Therapeutic Uses of Mesenchymal Stem Cells 2.0. Int J Mol Sci 2023; 24:ijms24043938. [PMID: 36835347 PMCID: PMC9963112 DOI: 10.3390/ijms24043938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 02/08/2023] [Indexed: 02/18/2023] Open
Abstract
For the clinical application of mesenchymal stem cells (MSCs), the optimization of biological products (e [...].
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Jasenc L, Stražar K, Mihelič A, Mihalič R, Trebše R, Haring G, Jeras M, Zupan J. In Vitro Characterization of the Human Skeletal Stem Cell-like Properties of Primary Bone-Derived Mesenchymal Stem/Stromal Cells in Patients with Late and Early Hip Osteoarthritis. LIFE (BASEL, SWITZERLAND) 2022; 12:life12060899. [PMID: 35743928 PMCID: PMC9228448 DOI: 10.3390/life12060899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/06/2022] [Accepted: 06/10/2022] [Indexed: 11/30/2022]
Abstract
Human skeletal stem cells (hSSCs) were recently identified as podoplanin (PDPN)/CD73/CD164-positive and CD146-negative cells that decline with age, and play a role in the pathogenesis of osteoarthritis (OA). The aim of this study was to identify the hSSC-like properties of bone-derived mesenchymal stem/stromal cells (MSCs) of patients with late and early OA. Methods: First, we performed gene expression profiling for the hSSC markers in 32 patients with late and early OA, and donors without OA. Having identified the low expression of hSSC markers in late OA patients, we further performed trilineage differentiation and immunophenotyping for hSSC makers in the selected subsets from each donor group. Results: Our results show no differences in osteogenesis, chondrogenesis, and adipogenesis between the MSCs from the three groups. However, the immunophenotyping shows lower CD164 in MSCs from early OA patients in comparison with late and no OA subjects (p = 0.002 and p = 0.017). Conclusions: Our study shows that the in vitro hSSC-like properties of bone-derived MSCs are similar in patients with early and late OA, and in donors without OA. However, the lower percentage of CD164-positive MSCs in early OA patients indicates the potential of CD164 as a marker of the onset of OA.
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Affiliation(s)
- Lara Jasenc
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Askerceva 7, 1000 Ljubljana, Slovenia;
| | - Klemen Stražar
- Department of Orthopaedic Surgery, University Medical Centre Ljubljana, Zaloska 9, 1000 Ljubljana, Slovenia;
- Faculty of Medicine, University of Ljubljana Vrazov trg 2, 1000 Ljubljana, Slovenia;
| | - Anže Mihelič
- Valdoltra Orthopaedic Hospital, Jadranska 31, 6280 Ankaran, Slovenia; (A.M.); (R.M.)
| | - Rene Mihalič
- Valdoltra Orthopaedic Hospital, Jadranska 31, 6280 Ankaran, Slovenia; (A.M.); (R.M.)
| | - Rihard Trebše
- Faculty of Medicine, University of Ljubljana Vrazov trg 2, 1000 Ljubljana, Slovenia;
- Valdoltra Orthopaedic Hospital, Jadranska 31, 6280 Ankaran, Slovenia; (A.M.); (R.M.)
| | - Gregor Haring
- Institute of Forensic Medicine, Faculty of Medicine, University of Ljubljana., Korytkova 2, 1000 Ljubljana, Slovenia;
| | - Matjaž Jeras
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Askerceva 7, 1000 Ljubljana, Slovenia;
- Celica, Biomedical Center, d.o.o., Tehnoloski Park 24, 1000 Ljubljana, Slovenia
- Correspondence: (M.J.); (J.Z.)
| | - Janja Zupan
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Askerceva 7, 1000 Ljubljana, Slovenia;
- Correspondence: (M.J.); (J.Z.)
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