Wip1 and p53 contribute to HTLV-1 Tax-induced tumorigenesis.

Wip1 and p53 contribute to HTLV-1 Tax-induced tumorigenesis.
复制标题

DOI:
10.1186/1742-4690-9-114
复制
发表时间:
2012-12-21
期刊:
影响因子:
3.3
通讯作者:
Jeang KT
Jeang KT
中科院分区:
医学2区
文献类型:
--
作者:
Zane L;Yasunaga J;Mitagami Y;Yedavalli V;Tang SW;Chen CY;Ratner L;Lu X;Jeang KT

文献摘要

参考文献

被引文献

相似文献

人类T细胞白血病病毒1型(HTLV-1)感染全球2000万人,并导致成人T细胞白血病/淋巴瘤(ATLL),一种高度侵袭性的T细胞癌症。ATLL是难治性的治疗与传统的化疗和不到10%的患病个体生存超过5年后诊断。HTLV-1编码一种病毒癌蛋白Tax,其功能是将病毒感染的T细胞转化为白血病细胞。所有ATLL病例都被认为具有降低的p53活性,尽管只有少数ATLL在其p53基因中具有遗传突变。已经表明p53功能被Tax蛋白灭活。使用基因改变的小鼠,我们在这里报告说,Tax表达没有达到与p53基因突变(即p53−/−基因型)所见的p53失活的功能等效性。因此,我们发现Tax+p53+/+与Tax+p53−/−小鼠之间的肿瘤发生存在统计学显著差异。我们还发现细胞Wip 1磷酸酶蛋白在Tax转基因小鼠肿瘤形成中的作用。值得注意的是,与Tax+ Wip 1 +/+小鼠相比,Tax+ Wip 1 −/−小鼠的肿瘤发生率在统计学上显著降低。我们的研究结果提供了新的见解p53和Wip 1在Tax诱导的小鼠肿瘤的体内肿瘤发生的贡献。
Human T-cell Leukemia Virus type 1 (HTLV-1) infects 20 million individuals world-wide and causes Adult T-cell Leukemia/Lymphoma (ATLL), a highly aggressive T-cell cancer. ATLL is refractory to treatment with conventional chemotherapy and fewer than 10% of afflicted individuals survive more than 5 years after diagnosis. HTLV-1 encodes a viral oncoprotein, Tax, that functions in transforming virus-infected T-cells into leukemic cells. All ATLL cases are believed to have reduced p53 activity although only a minority of ATLLs have genetic mutations in their p53 gene. It has been suggested that p53 function is inactivated by the Tax protein. Using genetically altered mice, we report here that Tax expression does not achieve a functional equivalence of p53 inactivation as that seen with genetic mutation of p53 (i.e. a p53−/− genotype). Thus, we find statistically significant differences in tumorigenesis between Tax+p53+/+versus Tax+p53−/− mice. We also find a role contributed by the cellular Wip1 phosphatase protein in tumor formation in Tax transgenic mice. Notably, Tax+Wip1−/− mice show statistically significant reduced prevalence of tumorigenesis compared to Tax+Wip1+/+ counterparts. Our findings provide new insights into contributions by p53 and Wip1 in the in vivo oncogenesis of Tax-induced tumors in mice.
DOI: 10.2174/187152808785107642
发表时间: 2008-06-01
期刊: Inflammation & Allergy Drug Targets
影响因子: --
作者:
Goncalves, Denise U.;Proietti, Fernando A.;Carneiro-Proietti, Anna B.
通讯作者: Carneiro-Proietti, Anna B.
DOI: 10.1073/pnas.94.12.6048
发表时间: 1997-06-10
影响因子: 11.1
作者:
Fiscella, M;Zhang, HL;Appella, E
通讯作者: Appella, E
DOI: 10.1126/science.282.5393.1497
发表时间: 1998-11-20
期刊: SCIENCE
影响因子: 56.9
作者:
Bunz, F;Dutriaux, A;Vogelstein, B
通讯作者: Vogelstein, B
DOI: 10.1016/j.stem.2007.05.020
发表时间: 2007-08-01
期刊: CELL STEM CELL
影响因子: 23.9
作者:
Demidov, Oleg N.;Timofeev, Oleg;Bulavin, Dmitry V.
通讯作者: Bulavin, Dmitry V.
DOI: 10.1002/ijc.24094
发表时间: 2009-03-15
影响因子: 6.4
作者:
Chi, Ya-Hui;Ward, Jerrold M.;Jeang, Kuan-Teh
通讯作者: Jeang, Kuan-Teh