The Wassmann Team has just published a new paper in Star Protocols!
Here, we describe a biosensor to assess meiotic cohesin subunit Rec8 cleavage in mouse oocytes. We detail oocyte collection and microinjection of the mRNA expressing the biosensor. The biosensor is targeted to chromosomes and consists of two fluorophores flanking a Rec8 fragment containing separase cleavage sites. Cleavage leads to dissociation of one fluorophore from chromosomes, and the efficiency can be estimated by live imaging. We detail the use of this biosensor in mouse oocytes with or without Aurora B/C inhibitor.
Correspondence: katja.wassmann (at) ijm.fr
Open Access • DOI: 10.1016/j.xpro.2022.101714