Cell viability of bovine spermatozoa subjected to DNA electroporation and DNAse I treatment

Theriogenology
Paulo Varoni CavalcantiMayra Elena Ortiz D'Avila Assumpção

Abstract

Many mechanisms involved in sperm-mediated gene transfer (SMGT) are still unknown. It is still a matter of debate whether exogenous DNA fragments incorporated by the embryo are originated from those bound to the sperm membrane or by those that penetrated the intracellular compartment. In an attempt to elucidate the transmission mechanism of exogenous DNA molecules by sperm, some authors suggested a treatment with DNAse I to remove DNA molecules outside the sperm. But little is known regarding the effects of DNAse I treatment on sperm viability and its impact on sperm organelles. An important aspect of the SMGT technique is the amount of exogenous DNA incubated with sperm, which may influence the internalization rate. Due to the inconsistencies found in literature, this work aimed to contribute to bovine sperm physiology knowledge evaluating the effects of different DNA concentrations, electroporation, and DNAse I treatments on sperm viability characteristics, DNA uptake, and IVF. For that, the effects of different concentrations of exogenous DNA (250, 500 and 1000 ng/10(6) cells) and incubation or electroporation were tested on sperm functional characteristics and in vitro embryo production. No effect of DNA concentration was o...Continue Reading

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Citations

Jul 15, 2020·Molecular Biology Reports·Larissa O DaneluzVinicius F Campos

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