Tumor suppressive activity of prolyl isomerase Pin1 in renal cell carcinoma.

Tumor suppressive activity of prolyl isomerase Pin1 in renal cell carcinoma.
复制标题

DOI:
10.1016/j.molonc.2011.06.002
复制
发表时间:
2011-10
期刊:
影响因子:
6.6
通讯作者:
Rathmell WK
Rathmell WK
中科院分区:
医学2区
文献类型:
--
作者:
Teng BL;Hacker KE;Chen S;Means AR;Rathmell WK

文献摘要

参考文献

被引文献

相似文献

Pin1特异性识别并催化磷酸化的ser /Thr-Pro键的顺反异构化,这调节了参与肿瘤进展的许多Pin1靶点的稳定性、定位和功能。然而,Pin1在癌症中的作用仍然是一个谜,因为该基因位于染色体19p13.2上,这是一个在一些肿瘤中容易失去杂合性的区域。由于Pin1蛋白在肾癌中经常低表达,我们探索了它在人透明细胞肾细胞癌(ccRCC)中的作用。本研究显示PIN1基因缺失和mRNA表达不足是ccRCC肿瘤中PIN1减少的机制。在软琼脂和异种移植肿瘤模型中,我们证明在Pin1蛋白表达不足的细胞系中恢复Pin1可以减弱ccRCC细胞的生长。此外,Pin1在ccRCC细胞中对肿瘤生长产生负面影响的能力可能依赖于功能性p53的存在,而功能性p53在ccRCC中很少发生突变。这些观察结果表明,Pin1可能在ccRCC中具有轻微的肿瘤抑制作用。
Pin1 specifically recognizes and catalyzes the cis-trans isomerization of phosphorylated-Ser/Thr-Pro bonds, which modulate the stability, localization, and function of numerous Pin1 targets involved in tumor progression. However, the role of Pin1 in cancer remains enigmatic as the gene is located on chromosome 19p13.2, which is a region subject to loss of heterozygosity in several tumors. Since Pin1 protein is frequently under-expressed in kidney cancer, we have explored its role in human clear cell renal cell carcinoma (ccRCC). Here we show evidence for PIN1 gene deletion and mRNA under-expression as a mechanism of Pin1 reduction in ccRCC tumors. We demonstrate that restoration of Pin1 in cell lines found to be deficient in Pin1 protein expression can attenuate the growth of ccRCC cells in soft agar and a xenograft tumor model. Moreover, this ability of Pin1 to negatively influence tumor growth in ccRCC cells may be dependent on the presence of functional p53, which is infrequently mutated in ccRCC. These observations suggest Pin1 may have a mild tumor suppressive role in ccRCC.
DOI: 10.1016/s0002-9440(10)63731-5
发表时间: 2004-05-01
影响因子: 6
作者:
Bao, L;Kimzey, A;Wang, DG
通讯作者: Wang, DG
DOI: 10.1038/ncb0901-793
发表时间: 2001-09-01
影响因子: 21.3
作者:
Ryo, A;Nakamura, M;Lu, KP
通讯作者: Lu, KP
DOI: 10.1038/nature08672
发表时间: 2010-01-21
期刊: Nature
影响因子: 64.8
作者:
通讯作者: --
DOI: 10.1006/bbrc.1999.1736
发表时间: 1999-11-30
影响因子: 3.1
作者:
Fujimori, F;Takahashi, K;Uchida, T
通讯作者: Uchida, T
DOI: 10.1002/gcc.2870060205
发表时间: 1993-02-01
影响因子: 3.7
作者:
HEIMDAL, K;LOTHE, RA;BORRESEN, AL
通讯作者: BORRESEN, AL