Abstract
There is no consensus between the protocols used for the isolation, maintenance and cultivation of Adipose-derived stem cells (ADSCs) for therapeutic purposes. Thus, was evaluated the maintenance method of ADSCs submitted to enzymatic disaggregation by trypsin. Was made (1st until 10th passage) immunophenotyping, cell differentiation assays, comet assay, differential cell death, apoptosis, cell viability and membrane integrity by flow cytometry.The results showded that trypsinization,did not induce genomic instability, also did not alter the tail moment. The cell death assay, showed that only on the 10th passage there was a significant reduction and was cofirmed by flow cytometry that is apoptosis. The viability showded significant reduction only in 10th passage, this was related to the loss of integrity of membrane, proven by flow cytometry. The quantities varied along the passages (11 × 105 to 2 × 105). Qualitatively, it can be observed that as the number of cells decreases, there is also a reduction in the juxtaposition of ADSCs and increased of the cell size, it is started in 6th passage. In view of the results, it is suggested for more safety, that ADSCs cultured until the 5th passage being used in human transplantation procedures.
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Acknowledgements
The present work was carried out with support from the Federal University of Mato Grosso do Sul—UFMS/MEC—Brazil. This study received the financial supported from FUNDECT, CNPq and (CAPES) institutions, thanks for this.
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LCSA an LB had the idea for the article, performed the literature search, assays, data analysis and write the article; AB and ACMBAS participated with contributions to the conception of the article and made some assays and RJO performed the data analysis and revised the article.
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Schweich-Adami, L.C., Bernardi, L., Baranoski, A. et al. The enzymatic disaggregation by trypsin does not alter cell quality and genomic stability of adipose-derived stem cells cultivated for human cell therapy. Cell Tissue Bank 23, 641–652 (2022). https://doi.org/10.1007/s10561-021-09958-0
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DOI: https://doi.org/10.1007/s10561-021-09958-0