Photo Credit: iStock.com\/JOSE LUIS CALVO MARTIN<\/p>\n
The following is a summary of \u201cAssessment of molecular and morphological dynamics during long-time in vitro cultivation of cryopreserved human ovarian tissue: risk of genetic alterations,\u201d published in the May 2025 issue of Frontiers in Endocrinology by Wang et al.\u00a0<\/p>\n
Cryopreservation of human ovarian tissue, involving saturation with cryoprotectants, freezing, thawing, and removal, followed by in vitro or in situ culture, a technology developed for patients undergoing aggressive anticancer treatments.\u00a0\u00a0<\/p>\n
Researchers conducted a retrospective study to evaluate tissue quality after cryopreservation and in vitro culture, aiming to detect genetic and molecular changes in cells.\u00a0\u00a0<\/p>\n
They froze ovarian tissue in 6% ethylene glycol and 6% dimethyl sulfoxide at a cooling rate of 0.3\u00b0 C\/min and thawed it at 100\u00b0C. After removing the cryoprotectants, tissue fragments were cultured in a 3-D system with soluble extract of basement membrane protein (Matrigel) for 7 days. Morphological and functional assessments were executed by microscopic observation and RNA sequencing. A comparative analysis of tissue morphology before and after culture was performed using bioinformatics for gene expression, variant analysis, functional annotation, and protein-protein interaction studies.\u00a0\u00a0<\/p>\n
The results showed that DNA and RNA analyses thereafter cultivation revealed increased gene fusion and alternative splicing events, and these changes likely impacted the gene expression and cellular functions.\u00a0\u00a0<\/p>\n
Investigators concluded that prolonged in vitro culture of human ovarian<\/a> tissue resulted in significant morphological changes and genetic alterations.\u00a0<\/p>\n