| Full text | |
| Author(s): |
Feitosa, Weber Beringui
[1]
;
Lopes, Everton
[1]
;
Visintin, Jose Antonio
[1]
;
Ortiz D'Avila Assumpcao, Mayra Elena
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Coll Vet Med, Dept Anim Reprod, Sao Paulo, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | Journal of Cellular Physiology; v. 235, n. 7-8 JAN 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Fertilization-induced {[}Ca2+](i) oscillations generally depend on the release of calcium ions from the endoplasmic reticulum (ER). Since ER is the main store of calcium ions, it plays an important role in oocyte fertilization. However, the mechanism of ER organization at oocyte activation is unknown. Here, we show that protein kinase C (PKC) is involved in ER distribution during bovine oocyte activation, but not involved in cell cycle resumption and spindle organization. Actin filaments were affected by PKC pharmacological inhibition. In addition, similar to PKC results, the actin-depolymerizing drug cytochalasin B affected the ER distribution during oocyte activation. Specifically, we have demonstrated that ER organization during bovine oocyte activation is regulated by PKC possibly through its action on actin filaments regulation. Taken together, the results presented here provide further information on the pathway involved in the regulation of ER organization during oocyte activation and new insight into the functional role of PKC and actin filaments during this process. (AU) | |