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27.03.2020 | Fertility Preservation | Ausgabe 4/2020

Journal of Assisted Reproduction and Genetics 4/2020

The growth and development conditions in mouse offspring derived from ovarian tissue cryopreservation and orthotopic transplantation

Zeitschrift:
Journal of Assisted Reproduction and Genetics > Ausgabe 4/2020
Autoren:
Zhe Yan, Qing Li, Long Zhang, Beijia Kang, Wei Fan, Tang Deng, Jiang Zhu, Yan Wang
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s10815-020-01734-5) contains supplementary material, which is available to authorized users.

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Abstract

Purpose

To investigate the potential development or metabolic risk in offspring derived from mice with transplanted frozen-thawed ovarian tissue.

Methods

Mice ovaries were intervened by vitrification (group V) and slow-freezing (group S) cryopreservation and orthotopic transplantation. Orthotopic transplantation of fresh ovarian (group F) and natural mating (group C) served as control groups. The fertility restoration and health conditions of generations were assessed by offspring counts, anti-fatigue and motor ability, and organ morphology. The methylation rate and expression level of imprinted genes (IGF2R, H19, SNRPN, and PLAGL1) were used to predict the potential risk of development in transplanted generations.

Results

Both the percentage of normal morphological follicles in different developmental periods and the litter size of receipt mice were comparable in all three transplanted groups. There was no significant difference in offspring mice’s birth defects, body weight gain, anti-fatigue ability, or exercise capacity among the four groups. The methylation rate of IGF2R, H19, and PLAGL1 showed a significant variation in cryopreservation groups as compared with control groups, as well as a difference in gene expression. The SNRPN appeared to be stable in methylation status. There were no differences in mRNA expression in all groups.

Conclusions

The different ovarian tissue cryopreservation methods did not influence either maternal fertility function or offspring growth. However, these technologies could affect the methylation rate and expression level of some development-related imprinting genes in the offspring, which may lead to some indeterminacy risk.

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