The effects of heat shock protein 70 addition in the culture medium on the development and quality of in vitro produced heat shocked bovine embryos
Ημερομηνία
2021Γλώσσα
en
Λέξη-κλειδί
Επιτομή
The aims of the present study were to examine the effects of HSP70 addition in the in vitro culture medium of day 3 embryos on their developmental competence and quality. Bovine oocytes (n = 1442) were in vitro matured, inseminated and cultured for the first two days according to standardized methods. The presumptive zygotes were randomly allocated in three experimental groups: Control, C (embryos cultured at 39 °C throughout the culture period), group C41 (temperature was raised to 41 °C from the 48th to 72nd h post insemination (p.i.) and then it returned at 39 °C for the remaining culture period), and group H41 (the temperature modification was the same as in C41 and during heat exposure, HSP70 was added in the culture medium). Cleavage and embryo yield were assessed 48 h p.i. and on days 7, 8, 9, respectively and gene expression in day 7 blastocysts was assessed by RT-PCR. Blastocyst yield was the highest in group C39; and higher in group H41 compared to group C41. From the gene expression analyses, altered expression of 11 genes was detected among groups. The analysis of the orchestrated patterns of gene expression differed between groups. The results of this study confirm the devastating effects of heat stress on embryo development and provide evidence that HSP70 addition at the critical stages can partly counterbalance, without neutralizing, the negative effects of the heat insult on embryos, acting mainly through mechanisms related to energy deployment. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Collections
Related items
Showing items related by title, author, creator and subject.
-
Investigating Molecular Determinants of Cancer Cell Resistance to Ionizing Radiation Through an Integrative Bioinformatics Approach
Toy H.I., Karakülah G., Kontou P.I., Alotaibi H., Georgakilas A.G., Pavlopoulou A. (2021)Eradication of cancer cells through exposure to high doses of ionizing radiation (IR) is a widely used therapeutic strategy in the clinical setting. However, in many cases, cancer cells can develop remarkable resistance ... -
Enhancer of rudimentary homologue interacts with scaffold attachment factor B at the nuclear matrix to regulate SR protein phosphorylation
Drakouli S., Lyberopoulou A., Papathanassiou M., Mylonis I., Georgatsou E. (2017)Scaffold attachment factor B1 (SAFB1) is an integral component of the nuclear matrix of vertebrate cells. It binds to DNA on scaffold/matrix attachment region elements, as well as to RNA and a multitude of different proteins, ... -
Proteomic analysis of the mitochondrial glucocorticoid receptor interacting proteins reveals pyruvate dehydrogenase and mitochondrial 60 kDa heat shock protein as potent binding partners
Karra A.G., Sioutopoulou A., Gorgogietas V., Samiotaki M., Panayotou G., Psarra A.-M.G. (2022)Glucocorticoids are steroid hormones that regulate plethora biological actions such as growth and metabolism, immune response, and apoptosis. Glucocorticoids actions are mediated via glucocorticoid receptors which act ...