Back to Search
Start Over
Fyn kinase-tubulin interaction during meiosis of rat eggs.
Fyn kinase-tubulin interaction during meiosis of rat eggs.
- Source :
-
Reproduction (Cambridge, England) [Reproduction] 2004 Oct; Vol. 128 (4), pp. 387-93. - Publication Year :
- 2004
-
Abstract
- Prior to fertilization, the spindle of vertebrate eggs must remain stable and well organized during the second meiotic meta-phase arrest (MII). In a previous study we have determined that the completion of meiosis is a Src family kinase (SFK)-dependent event. In the current study we have used the SFK inhibitors, SU6656 and PP2, and demonstrated that inhibition of SFKs caused the formation of a disorganized spindle. The observation that proper organization of an MII spindle is an SFK-dependent process, combined with our previous finding that Fyn kinase is localized at the microtubules (MTs), prompted us to examine the potential role of Fyn in MT signaling. Our results show an association between Fyn and tubulin, the ability of Fyn to phosphorylate tubulin in vitro and stimulation of meiosis completion by injection of a constitutively active form of Fyn (CAF). We suggested that SFKs mediate significant functions during the organization of the MII spindle. In view of CAF injection experiments, and of the pronounced concentration of Fyn kinase at the spindle, we propose that Fyn may play an important role in some aspects of the spindle functions, possibly those involving the MTs.
- Subjects :
- Animals
Cells, Cultured
Female
Indoles pharmacology
Meiosis
Microinjections
Microscopy, Confocal
Microtubules ultrastructure
Ovum ultrastructure
Proto-Oncogene Proteins analysis
Proto-Oncogene Proteins c-fyn
Pyrimidines pharmacology
Rats
Rats, Wistar
Spindle Apparatus metabolism
Spindle Apparatus ultrastructure
Sulfonamides pharmacology
Tubulin analysis
src-Family Kinases administration & dosage
src-Family Kinases antagonists & inhibitors
src-Family Kinases metabolism
Ovum metabolism
Proto-Oncogene Proteins metabolism
Tubulin metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1470-1626
- Volume :
- 128
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Reproduction (Cambridge, England)
- Publication Type :
- Academic Journal
- Accession number :
- 15454633
- Full Text :
- https://doi.org/10.1530/rep.1.00266