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Review
. 2019 May 9;9(5):181.
doi: 10.3390/biom9050181.

The Use of Antifreeze Proteins in the Cryopreservation of Gametes and Embryos

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Free PMC article
Review

The Use of Antifreeze Proteins in the Cryopreservation of Gametes and Embryos

Vanesa Robles et al. Biomolecules. .
Free PMC article

Abstract

The cryopreservation of gametes and embryos is a technique widely used in reproductive biology. This technology helps in the reproductive management of domesticated animals, and it is an important tool for gene banking and for human-assisted reproductive technologies. Antifreeze proteins are naturally present in several organisms exposed to subzero temperatures. The ability for these proteins to inhibit ice recrystallization together with their ability to interact with biological membranes makes them interesting molecules to be used in cryopreservation protocols. This mini-review provides a general overview about the use of antifreeze proteins to improve the short and long term storage of gametes and embryos.

Keywords: AFP; cryopreservation; embryo; oocytes; spermatozoa; vitrification.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Antifreeze protein (AFP) mechanisms of the action binding to forming ice crystals around gametes or the embryo, and 3D models of the most used AFPs in reproductive technologies. The 3D models were created using the SWISS-MODEL online platform with the following National Center for Biotechnology Information (NCBI) sequences: AFPI (Pseudopleuronectes americanus; GeneBank ID: AAA49466.1), AFPII (Hemitripterus americanus, GenBank ID: AAA49618.1), AFPIII (Zoarces americanus; GenBank ID: ABA41371.1), and AFGP (Gadus morhua; GenBank ID: AAQ09567.1)

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