Abstract
The efficacy of human amniotic mesenchymal stem cell (hAMSC) ovarian injection in improving ovarian function in primary ovarian insufficiency (POI) patients has been shown in some reports. However, the safety and efficacy of hAMSC vein injection remains unclear. In this study, we evaluated the safety and efficacy of hAMSC intravenous injection in cynomolgus macaques and SD rats and provided evidence for clinical trials. The hAMSCs were transplanted three times in SD rats at low, medium, and high doses. The animal behavior and biochemical and biophysical parameters were routinely monitored on a 2-month period posttransplantation, and histopathologic examinations were also performed. Experiments on the acute toxicity, allergy test, and hemolysis test showed that hAMSCs possess good biocompatibility. Our results showed that the maximum tolerated dose of hAMSCs in SD rats was 4.0 × 107 cells/kg. The maximum safe dose with three injections of hAMSCs in SD rats was 5.0 × 106 cells/kg. In addition, the results demonstrated that hAMSCs may restore POI rat ovarian function after two injections of 2.5 × 106 cells/kg or 5.0 × 106 cells/kg, which improved the disturbed estrous cycle, hormone levels, and ovarian lesions induced by pZP3. In conclusion, the preclinical results suggested that the transplantation of hAMSCs may be safe and efficacious for SD rats at doses of 5.0 × 106 cells/kg and lower.
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Acknowledgements
We thank the donors of stem cells, the Department of Obstetrics and Gynaecology in The Second Hospital of University of South China and Tianjin Tiancheng New Drug Evaluation.
Funding
This work was supported by Scientific and Technological Innovation Program of High-tech Industry of Hunan Province (NO: 2020GK4082), Changsha Key Research And Development Program (NO: kh2201247), Loudi Key Generic technologies Program (NO: Lou Caijiao No. 1 [2022]).
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Yuan Yang analyzed most of the data and wrote the initial draft of the paper; Li Li, Tenglong Yan, Jiangzhou Hua, Shiping Li, Yun Liu, and Sijie Yu analyzed the data and interpreted the results; Hongmei Zhang and Shihuan Tang acquired resources; Zhigang Xue, Xianping Zhang, and Chunbing Zheng conceived the idea of the study; all authors discussed the results and revised the manuscript.
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The Animal Ethic Committee of Tianjin Tiancheng New Drug Evaluation approved the acute toxicity assay (NO: 2021120102), long toxicity and tissue distribution assay (NO: 2022022802), allergy test (NO: 2022051801), cynomolgus macaque assay (NO: 2021120102), POI rats assay (NO: 2022030703), and the Ethic Committee of the Second Hospital of University of South China approved the collection of amniotic membrane sample (NO: 202208–01).
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Highlights
1. hAMSC may restore POI rat ovarian function.
2. hAMSC did not cause haemolysis.
3. Multiple transplantation of hAMSC may be safe for SD rats at doses of 5.0 × 106 cells/kg and lower.
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Yang, Y., Li, L., Yan, T. et al. Evaluation of Safety and Efficacy of Amniotic Mesenchymal Stem Cells for POI in Animals. Reprod. Sci. 31, 1159–1169 (2024). https://doi.org/10.1007/s43032-023-01417-3
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DOI: https://doi.org/10.1007/s43032-023-01417-3