Synaptonemal complex protein SYCP3 impairs mitotic recombination by interfering with BRCA2.
Synaptonemal complex protein SYCP3 impairs mitotic recombination by interfering with BRCA2.
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DOI:
10.1038/embor.2011.221
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发表时间:
2011-12-23
期刊:
影响因子:
7.7
通讯作者:
Miyagawa, Kiyoshi
中科院分区:
文献类型:
--
作者:
Hosoya, Noriko;Okajima, Miyuki;Kinomura, Aiko;Fujii, Yoshihiro;Hiyama, Takashi;Sun, Jiying;Tashiro, Satoshi;Miyagawa, Kiyoshi
The meiosis-specific synaptonemal complex protein SYCP3 has been reported to be aberrantly expressed in tumours. However, in contrast to its well-defined function in meiosis, its possible role in mitotic cells is entirely unknown. Here, we show that SYCP3 is expressed in a range of primary tumours and that it impairs chromosomal integrity in mitotic cells. Expression of SYCP3 inhibits the homologous recombination (HR) pathway mediated by RAD51, inducing hypersensitivity to DNA-damaging agents such as a poly(ADP-ribose) polymerase (PARP) inhibitor and chromosomal instability. SYCP3 forms a complex with BRCA2 and inhibits its role in HR. These findings highlight a new mechanism for chromosomal instability in cancer and extend the range of PARP-inhibitor sensitive tumours to those expressing SYCP3.
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影响因子:
7.7
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