Mastl is required for timely activation of APC/C in meiosis I and Cdk1 reactivation in meiosis II
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Mastl is required for timely activation of APC/C in meiosis I and Cdk1 reactivation in meiosis II. / Adhikari, Deepak; Diril, M. Kasim; Busayavalasa, Kiran; Risal, Sanjiv; Nakagawa, Shoma; Lindkvist, Rebecca; Shen, Yan; Coppola, Vincenzo; Tessarollo, Lino; Kudo, Nobuaki R.; Kaldis, Philipp; Liu, Kui.
I: Journal of Cell Biology, Vol. 206, Nr. 7, 29.09.2014, s. 843-853.Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift
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T1 - Mastl is required for timely activation of APC/C in meiosis I and Cdk1 reactivation in meiosis II
AU - Adhikari, Deepak
AU - Diril, M. Kasim
AU - Busayavalasa, Kiran
AU - Risal, Sanjiv
AU - Nakagawa, Shoma
AU - Lindkvist, Rebecca
AU - Shen, Yan
AU - Coppola, Vincenzo
AU - Tessarollo, Lino
AU - Kudo, Nobuaki R.
AU - Kaldis, Philipp
AU - Liu, Kui
PY - 2014/9/29
Y1 - 2014/9/29
N2 - In mitosis, the Greatwall kinase (called microtubuleassociated serine/threonine kinase like [Mastl] in mammals)is essential for prometaphase entry or progression by suppressing protein phosphatase 2A (PP2A) activity. PP2A suppression in turn leads to high levels of Cdk1 substrate phosphorylation. We have used a mouse model with an oocyte-specific deletion of Mastl to show that Mastl-null oocytes resume meiosis I and reach metaphase I normally but that the onset and completion of anaphase I are delayed. Moreover, after the completion of meiosis I, Mastl-null oocytes failed to enter meiosis II (MII) because they reassembled a nuclear structure containing decondensed chromatin. Our results show that Mastl is required for the timely activation of anaphase-promoting complex/cyclosome to allow meiosis I exit and for the rapid rise of Cdk1 activity that is needed for the entry into MII in mouse oocytes.
AB - In mitosis, the Greatwall kinase (called microtubuleassociated serine/threonine kinase like [Mastl] in mammals)is essential for prometaphase entry or progression by suppressing protein phosphatase 2A (PP2A) activity. PP2A suppression in turn leads to high levels of Cdk1 substrate phosphorylation. We have used a mouse model with an oocyte-specific deletion of Mastl to show that Mastl-null oocytes resume meiosis I and reach metaphase I normally but that the onset and completion of anaphase I are delayed. Moreover, after the completion of meiosis I, Mastl-null oocytes failed to enter meiosis II (MII) because they reassembled a nuclear structure containing decondensed chromatin. Our results show that Mastl is required for the timely activation of anaphase-promoting complex/cyclosome to allow meiosis I exit and for the rapid rise of Cdk1 activity that is needed for the entry into MII in mouse oocytes.
UR - http://www.scopus.com/inward/record.url?scp=84907764457&partnerID=8YFLogxK
U2 - 10.1083/jcb.201406033
DO - 10.1083/jcb.201406033
M3 - Article
C2 - 25246615
AN - SCOPUS:84907764457
VL - 206
SP - 843
EP - 853
JO - Journal of Cell Biology
JF - Journal of Cell Biology
SN - 0021-9525
IS - 7
ER -