The Response of the Cell Genome of Endometrial Mesenchymal Stem Cells to the Procedure of Long-Term Cyropreservation

Q4 Biochemistry, Genetics and Molecular Biology Cell and Tissue Biology Pub Date : 2023-12-11 DOI:10.1134/s1990519x2306007x
T. M. Grinchuk, M. A. Shorokhova, N. A. Pugovkina
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Abstract

Information about the effect of cryopreservation on cellular functions and the genetic apparatus of cells of differing genesis is not unambiguous and is in the process of accumulation. This work is aimed at studying the effect of long-term storage (7 years) in the frozen state of human endometrial mesenchymal stem cells (eMSCs) on the stability of their genome in vitro. The results showed destabilization of the karyotype structure in the descendants of cells after their thawing, namely, aneupolyploidization of the chromosome set; increased fragility of chromosomes, resulting in a huge pool of aberrant chromosomes; and impaired condensation in homologues. Chromosomal breakdowns affecting the centromeric regions were in some cases accompanied by the preservation of genetic material in the form of independent chromosomes. Almost all chromosomes of the set were involved in the process of destabilization of the eMSC cell genome. It has been shown that the procedure of long-term cryopreservation can become an inducer of premature cellular aging of eMSCs after their thawing. Comparison of the data obtained with the results of karyotyping of transformed Chinese hamster cells that underwent a similar procedure led to the conclusion that cryopreservation for biological systems can be a stress that induces heterogeneous genetic defects at the karyotype level. The response of the genome of cells of different origin to the same conditions of cryopreservation may differ.

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子宫内膜间充质干细胞的细胞基因组对长期细胞保存程序的反应
摘要有关冷冻保存对不同成因细胞的细胞功能和遗传装置的影响的信息并不明确,而且还在积累过程中。这项工作旨在研究人类子宫内膜间充质干细胞(eMSCs)在冷冻状态下长期储存(7 年)对其体外基因组稳定性的影响。结果显示,细胞解冻后,其后代的核型结构不稳定,即染色体组出现非多倍体化;染色体的脆性增加,导致出现大量畸变染色体;同源染色体的凝集功能受损。在某些情况下,影响中心粒区域的染色体断裂会以独立染色体的形式保留遗传物质。几乎所有染色体组都参与了 eMSC 细胞基因组不稳定的过程。研究表明,长期冷冻保存的过程会导致 eMSC 解冻后细胞过早衰老。将获得的数据与经过类似程序转化的中国仓鼠细胞的核型结果进行比较后得出的结论是,生物系统的冷冻保存可能是一种压力,会诱发核型水平上的异质性遗传缺陷。不同来源的细胞基因组对相同低温保存条件的反应可能不同。
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来源期刊
Cell and Tissue Biology
Cell and Tissue Biology Biochemistry, Genetics and Molecular Biology-Cell Biology
CiteScore
0.80
自引率
0.00%
发文量
51
期刊介绍: The journal publishes papers on vast aspects of cell research, including morphology, biochemistry, biophysics, genetics, molecular biology, immunology. The journal accepts original experimental studies, theoretical articles suggesting novel principles and approaches, presentations of new hypotheses, reviews highlighting major developments in cell biology, discussions. The main objective of the journal is to provide a competent representation and integration of research made on cells (animal and plant cells, both in vivo and in cell culture) offering insight into the structure and functions of live cells as a whole. Characteristically, the journal publishes articles on biology of free-living and parasitic protists, which, unlike Metazoa, are eukaryotic organisms at the cellular level of organization.
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