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. 2010 Oct 8;330(6001):228-31.
doi: 10.1126/science.1196333. Epub 2010 Sep 8.

Frequent mutations of chromatin remodeling gene ARID1A in ovarian clear cell carcinoma

Siân Jones  1 , Tian-Li Wang, Ie-Ming Shih, Tsui-Lien Mao, Kentaro Nakayama, Richard Roden, Ruth Glas, Dennis Slamon, Luis A Diaz Jr, Bert Vogelstein, Kenneth W Kinzler, Victor E Velculescu, Nickolas Papadopoulos
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Frequent mutations of chromatin remodeling gene ARID1A in ovarian clear cell carcinoma

Siân Jones et al. Science. .

VSports在线直播 - Abstract

Ovarian clear cell carcinoma (OCCC) is an aggressive human cancer that is generally resistant to therapy. To explore the genetic origin of OCCC, we determined the exomic sequences of eight tumors after immunoaffinity purification of cancer cells. Through comparative analyses of normal cells from the same patients, we identified four genes that were mutated in at least two tumors. PIK3CA, which encodes a subunit of phosphatidylinositol-3 kinase, and KRAS, which encodes a well-known oncoprotein, had previously been implicated in OCCC. The other two mutated genes were previously unknown to be involved in OCCC: PPP2R1A encodes a regulatory subunit of serine/threonine phosphatase 2, and ARID1A encodes adenine-thymine (AT)-rich interactive domain-containing protein 1A, which participates in chromatin remodeling. The nature and pattern of the mutations suggest that PPP2R1A functions as an oncogene and ARID1A as a tumor-suppressor gene VSports手机版. In a total of 42 OCCCs, 7% had mutations in PPP2R1A and 57% had mutations in ARID1A. These results suggest that aberrant chromatin remodeling contributes to the pathogenesis of OCCC. .

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Figures

Figure 1
Figure 1
Sequence chromatograms showing somatic ARID1A and PPP2R1A mutations. The lower panels show the tumor and the upper panels show the matched normal control.
See this image and copyright information in PMC

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