Coordinate activation of Shh and PI3K signaling in PTEN-deficient glioblastoma: new therapeutic opportunities.
Coordinate activation of Shh and PI3K signaling in PTEN-deficient glioblastoma: new therapeutic opportunities.
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In glioblastoma, PI3kinase (PI3K) signaling is frequently activated by loss of the tumor suppressor PTEN. However, it is not known whether inhibiting PI3K represents a selective and effective approach for treatment. Here we interrogate large databases and find that Shh signaling is activated in PTEN-deficient glioblastoma. We demonstrate that Shh and PI3K pathways synergize to promote tumor growth and viability in human PTEN-deficient glioblastomas. A combination of PI3K and Shh signaling inhibitors not only suppresses activation of both pathways, but also abrogates S6kinase signaling. Accordingly, simultaneously targeting both pathways results in mitotic catastrophe and tumor apoptosis, and dramatically reduces growth of PTEN-deficient glioblastomas in vitro and in vivo. The drugs tested here appear safe in humans; therefore this combination may provide new targeted treatment for glioblastoma.
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影响因子:
3.7
作者:
Cerami E;Demir E;Schultz N;Taylor BS;Sander C
通讯作者:
Sander C
DOI:
10.1073/pnas.1004602107
发表时间:
2010-05-25
影响因子:
11.1
作者:
Lee, Eunice Y.;Ji, Hongkai;Scott, Matthew P.
通讯作者:
Scott, Matthew P.
影响因子:
7.3
作者:
Evangelista, Marie;Lim, Tze Yang;de Sauvage, Frederic J.
通讯作者:
de Sauvage, Frederic J.
影响因子:
50.3
作者:
Phillips, HS;Kharbanda, S;Aldape, K
通讯作者:
Aldape, K
DOI:
10.1073/pnas.0504337103
发表时间:
2006-03-21
影响因子:
11.1
作者:
Riobó, NA;Lu, K;Emerson, CP
通讯作者:
Emerson, CP