Increased Aurora B expression reduces substrate phosphorylation and induces chromosomal instability.
Increased Aurora B expression reduces substrate phosphorylation and induces chromosomal instability.
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DOI:
10.3389/fcell.2022.1018161
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发表时间:
2022
影响因子:
5.5
通讯作者:
中科院分区:
文献类型:
--
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Increased Aurora B protein expression, which is common in cancers, is expected to increase Aurora B kinase activity, yielding elevated phosphorylation of Aurora B substrates. In contrast, here we show that elevated expression of Aurora B reduces phosphorylation of six different Aurora B substrates across three species and causes defects consistent with Aurora B inhibition. Complexes of Aurora B and its binding partner INCENP autophosphorylate in trans to achieve full Aurora B activation. Increased expression of Aurora B mislocalizes INCENP, reducing the local concentration of Aurora B:INCENP complexes at the inner centromere/kinetochore. Co-expression of INCENP rescues Aurora B kinase activity and mitotic defects caused by elevated Aurora B. However, INCENP expression is not elevated in concert with Aurora B in breast cancer, and increased expression of Aurora B causes resistance rather than hypersensitivity to Aurora B inhibitors. Thus, increased Aurora B expression reduces, rather than increases, Aurora B kinase activity.
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影响因子:
3.3
作者:
Britigan EM;Wan J;Zasadil LM;Ryan SD;Weaver BA
通讯作者:
Weaver BA
DOI:
10.1016/j.clml.2013.11.001
发表时间:
2014-06
期刊:
Clinical lymphoma, myeloma & leukemia
影响因子:
--
作者:
Foran J;Ravandi F;Wierda W;Garcia-Manero G;Verstovsek S;Kadia T;Burger J;Yule M;Langford G;Lyons J;Ayrton J;Lock V;Borthakur G;Cortes J;Kantarjian H
通讯作者:
Kantarjian H
DOI:
10.1083/jcb.153.4.865
发表时间:
2001-05-14
期刊:
The Journal of cell biology
影响因子:
--
作者:
Adams RR;Maiato H;Earnshaw WC;Carmena M
通讯作者:
Carmena M
DOI:
10.1083/jcb.105.5.2053
发表时间:
1987-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cooke CA;Heck MM;Earnshaw WC
通讯作者:
Earnshaw WC
影响因子:
7.3
作者:
Geuns-Meyer, Stephanie;Cee, Victor J.;Payton, Marc
通讯作者:
Payton, Marc