Journal of dental sciences · 2026
Mesenchymal stem cells derived from gingiva normoxic or hypoxic-preconditioning allogenous transplantation affect orthodontic tooth movement in vivo.
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Nugraha Alexander Patera, Hong Guang, Yang Kunhua, Narmada Ida Bagus, Rantam Fedik Abdul, Ernawati Diah Savitri, Ardani I Gusti Aju Wahju, Pramusita Adya, Putranti Nurul Aisyah Rizky, Fadzila Naora Dewi Rahma, Aurora Al Zayyan Shenaya, Farizaldi Reisya Irfanny, Luthfi Muhammad, Situmorang Putri Cahaya, Riawan Wibi, Tanimoto Kotaro
Аннотация
BACKGROUND/PURPOSE: Gingival mesenchymal stem cells (GMSC) show promising qualities in immunoregulation, immunomodulation in regeneration of periodontal tissue during orthodontic tooth movement (OTM). This study aimed to elucidate allogenous GMSC normoxia and hypoxic preconditioning transplantation in the OTM model using New Zealand rabbits (Oryctolagus cuniculus) by examining nuclear factor kappa beta (NF-κB), tumour necrosis factoralpha (TNF-α), nuclear factor associated T-cell-1 (NFATc1), Runt-related transcription factor 2 (RUNX2), Osteocalcin.
MATERIALS AND METHODS: Four groups were established from forty-eight, healthy, young male rabbits divided into the following respective groups: p1: normoxic GMSC transplantation with OTM, p2: hypoxic GMSC transplantation with OTM, k2: OTM only, and K1: phosphate buffered saline (PBS) only. In order to advance the mandibular first molar mesially, a fixed orthodontic appliance was applied. The rabbit was transplanted with 106 hypoxic or normoxic GMSC in 50 μl of PBS into afflicted gingiva after one day of OTM. All experimental animals were sacrificed on days 7, 14, and 28. Furthermore, mandibular tissue was isolated for the sample to examine NFKβ, TNF-α, NFATc1, osteocalcin, RUNX2 expression, and OTM rate.
RESULTS: There was a considerable increase in OTM rate, osteocalcin and RUNX2 expression in P2 on day 28 with significantly different between groups. In contrast to other groups, the P2 group's expression of NFKβ, TNF-α, and NFATc1 was considerably lower on day 28 in the tension side of the alveolar bone (P ≤ 0.05).
CONCLUSION: GMSC hypoxia-preconditioning transplantation increases the OTM rate through the RUNX2-osteocalcin-OTM rate stimulation pathway in rabbits (O. cunniculus).
MATERIALS AND METHODS: Four groups were established from forty-eight, healthy, young male rabbits divided into the following respective groups: p1: normoxic GMSC transplantation with OTM, p2: hypoxic GMSC transplantation with OTM, k2: OTM only, and K1: phosphate buffered saline (PBS) only. In order to advance the mandibular first molar mesially, a fixed orthodontic appliance was applied. The rabbit was transplanted with 106 hypoxic or normoxic GMSC in 50 μl of PBS into afflicted gingiva after one day of OTM. All experimental animals were sacrificed on days 7, 14, and 28. Furthermore, mandibular tissue was isolated for the sample to examine NFKβ, TNF-α, NFATc1, osteocalcin, RUNX2 expression, and OTM rate.
RESULTS: There was a considerable increase in OTM rate, osteocalcin and RUNX2 expression in P2 on day 28 with significantly different between groups. In contrast to other groups, the P2 group's expression of NFKβ, TNF-α, and NFATc1 was considerably lower on day 28 in the tension side of the alveolar bone (P ≤ 0.05).
CONCLUSION: GMSC hypoxia-preconditioning transplantation increases the OTM rate through the RUNX2-osteocalcin-OTM rate stimulation pathway in rabbits (O. cunniculus).