Molecular strategies to enhance the efficiency of in vitro oocyte maturation in a mouse model
REVIEW
Abstract
Introduction. In vivo oocyte maturation occurs within ovarian follicles. Under in vitro conditions, extensive research is being conducted on the cultivation of immature oocytes to achieve full maturity. In vitro oocyte culture is a key technique in reproductive biology, applied in fertility preservation, developmental studies, and assisted reproductive technologies. Aim. To systematize data on growth factors and hormones affecting IVM in mice, aiming to identify optimal strategies for protocol improvement. Materials and methods. An analytical review of 39 scientific publications on mouse IVM was conducted, focusing on morphological maturity criteria, oocyte microenvironment, and signaling pathways. A preliminary quantitative analysis of key modulators’ efficacy was performed. Results. Follicle-stimulating hormone, leukemia inhibitory factor (LIF), bone morphogenetic protein 15 (BMP15), growth differentiation factor 9 (GDF9), epidermal growth factor (EGF), insulin-like growth factors I and II (IGF-I/II), and granulocyte-macrophage colony-stimulating factor (GM-CSF) significantly influence various aspects of maturation: cumulus-oocyte complex expansion, metaphase II attainment, embryo quality, and oxidative stress reduction. Antioxidants (glutathione, atorvastatin) also improve IVM conditions. Conclusion. Combined use of hormones, growth factors, and antioxidants can substantially enhance IVM efficiency. These findings may be extrapolated to human protocol development.
References
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