Evidence that inositol polyphosphate 4-phosphatase type II is a tumor suppressor that inhibits PI3K signaling.
Evidence that inositol polyphosphate 4-phosphatase type II is a tumor suppressor that inhibits PI3K signaling.
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DOI:
10.1016/j.ccr.2009.06.006
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发表时间:
2009-08-04
期刊:
影响因子:
50.3
通讯作者:
Cantley LC
中科院分区:
文献类型:
--
作者:
Gewinner C;Wang ZC;Richardson A;Teruya-Feldstein J;Etemadmoghadam D;Bowtell D;Barretina J;Lin WM;Rameh L;Salmena L;Pandolfi PP;Cantley LC
We report that knocking down the expression of inositol polyphosphate 4-phosphatase type II (INPP4B) in human epithelial cells, like knockdown of PTEN, resulted in enhanced Akt activation, anchorage-independent growth, and enhanced over all motility. In xenograft experiments overexpression of INPP4B resulted in reduced tumor growth. INPP4B preferentially hydrolyzes phosphatidylinositol-3,4-bisphosphate (PI(3,4)P2) with no effect on phosphatidylinositol-3.4.5-triphosphate (PI(3,4,5)P3), suggesting that PI(3,4)P2 and PI(3,4,5)P3 may cooperate in Akt activation and cell transformation. Dual knockdown of INPP4B and PTEN resulted in cellular senescence. Finally, we find loss-of-heterozygosity (LOH) at the INPP4B locus in a majority of basal-like breast cancers as well as in a significant fraction of ovarian cancers, which correlated with lower over all patient survival, suggesting that INPP4B is a tumor suppressor.
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影响因子:
3.8
作者:
Krypuy, Michael;Ahmed, Ahmed Ashour;Etemadmoghadam, Dariush;Hyland, Sarah J.;deFazio, Anna;Fox, Stephen B.;Brenton, James D.;Bowtell, David D.;Dobrovic, Alexander
通讯作者:
Dobrovic, Alexander
DOI:
10.1073/pnas.92.20.9363
发表时间:
1995-09-26
影响因子:
11.1
作者:
DIMRI, GP;LEE, XH;CAMPISI, J
通讯作者:
CAMPISI, J
影响因子:
4.8
作者:
Debnath, J;Muthuswamy, SK;Brugge, JS
通讯作者:
Brugge, JS
影响因子:
56.9
作者:
Franke, TF;Kaplan, DR;Toker, A
通讯作者:
Toker, A
影响因子:
4.8
作者:
Frech, M;Andjelkovic, M;Hemmings, BA
通讯作者:
Hemmings, BA