Activation of cellular antioxidative stress and migration activities by purified components from immortalized stem cells from human exfoliated deciduous teeth

• Published in: Scientific reports 2024-07, Vol.14 (1), p.15340-15, Article 15340
• Main Authors: Shu, Yujing, Otake, Masato, Seta, Yasuhiro, Hori, Keigo, Kuramochi, Akiko, Ohba, Yoshio, Teramura, Yuji
• Format: Article
• Language: English
• Subjects: 631/532; 631/532/2074; Allografts; Antioxidants - metabolism; Antioxidants - pharmacology; Cell activation; Cell adhesion & migration; Cell migration; Cell Movement - drug effects; Cells, Cultured; Conditioned media; Culture Media, Conditioned - pharmacology; Cytokines; Dehydrogenase; Dehydrogenases; Glutathione peroxidase; Graft-versus-host reaction; Humanities and Social Sciences; Humans; Immortalization; Immunosuppressive agents; Intracellular; Mesenchymal stem cells; Mesenchymal Stem Cells - cytology; Mesenchymal Stem Cells - drug effects; Mesenchymal Stem Cells - metabolism; multidisciplinary; Oxidative Stress - drug effects; Regenerative medicine; Regenerative therapy; Science; Science (multidisciplinary); Signal transduction; Signal Transduction - drug effects; Stem cell transplantation; Stem cells; Stem Cells - cytology; Stem Cells - metabolism; Stem cells from human exfoliated deciduous teeth (SHEDs); Teeth; Tooth, Deciduous - cytology; Tooth, Deciduous - metabolism; Transplantation; Vascular system
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-024-66213-8

Although stem cell-based regenerative medicine has been extensively studied, it remains difficult to reconstruct three dimensional tissues and organs in combination with vascular systems in vitro. One clinically successful therapy is transplantation of mesenchymal stem cells (MSC) into patients with graft versus host disease. However, transplanted cells are immediately damaged and destroyed because of innate immune reactions provoked by thrombogenic inflammation, and patients need to take immunosuppressive drugs for the immunological regulation of allogeneic cells. This reduces the benefits of stem cell transplantation. Therefore, alternative therapies are more realistic options for clinical use. In this study, we aimed to take advantage of the therapeutic efficacy of MSC and use multiple cytokines released from MSC, that is, stem cells from human exfoliated deciduous teeth (SHEDs). Here, we purified components from conditioned media of immortalized SHED (IM-SHED-CM) and evaluated the activities of intracellular dehydrogenase, cell migration, and antioxidative stress by studying the cells. The immortalization of SHED could make the stable supply of CM possible. We found that the fractionated component of 50–100 kD from IM-SHED-CM had higher efficacy than the original IM-SHED-CM in terms of intracellular dehydrogenase and cell migration in which intracellular signal transduction was activated via receptor tyrosine kinases, and the glutathione peroxidase and reductase system was highly active. Although antioxidative stress activities in the fractionated component of 50–100 kD had slightly lower than that of original IM-SHE-CM, the fraction still had the activity. Thus, the use of fractionated components of 50–100 kD from IM-SHED-CM could be an alternative choice for MSC transplantation because the purified components from CM could maintain the effect of cytokines from SHED.