Interrogating the protein interactomes of RAS isoforms identifies PIP5K1A as a KRAS-specific vulnerability.
Interrogating the protein interactomes of RAS isoforms identifies PIP5K1A as a KRAS-specific vulnerability.
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DOI:
10.1038/s41467-018-05692-6
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发表时间:
2018-09-07
影响因子:
16.6
通讯作者:
Counter CM
中科院分区:
文献类型:
--
作者:
Adhikari H;Counter CM
In human cancers, oncogenic mutations commonly occur in the RAS genes KRAS, NRAS, or HRAS, but there are no clinical RAS inhibitors. Mutations are more prevalent in KRAS, possibly suggesting a unique oncogenic activity mediated by KRAS-specific interaction partners, which might be targeted. Here, we determine the specific protein interactomes of each RAS isoform by BirA proximity-dependent biotin identification. The combined interactomes are screened by CRISPR-Cas9 loss-of-function assays for proteins required for oncogenic KRAS-dependent, NRAS-dependent, or HRAS-dependent proliferation and censored for druggable proteins. Using this strategy, we identify phosphatidylinositol phosphate kinase PIP5K1A as a KRAS-specific interactor and show that PIP5K1A binds to a unique region in KRAS. Furthermore, PIP5K1A depletion specifically reduces oncogenic KRAS signaling and proliferation, and sensitizes pancreatic cancer cell lines to a MAPK inhibitor. These results suggest PIP5K1A as a potential target in KRAS signaling for the treatment of KRAS-mutant cancers. RAS isoforms are frequently mutated in cancer but their inhibition remains challenging. By comparing the protein interactomes of the highly similar isoforms HRAS, NRAS and KRAS, the authors here identify PIP5K1A as a KRAS-specific interactor and a target to inhibit KRAS-driven cell growth.
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DOI:
10.1083/jcb.200911110
发表时间:
2010-07-26
期刊:
The Journal of cell biology
影响因子:
--
作者:
Chao WT;Daquinag AC;Ashcroft F;Kunz J
通讯作者:
Kunz J
DOI:
10.1038/nrm3255
发表时间:
2011-12-22
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
影响因子:
16.6
作者:
Hu J;Yuan Q;Kang X;Qin Y;Li L;Ha Y;Wu D
通讯作者:
Wu D
影响因子:
4.8
作者:
Elad-Sfadia, G;Haklai, R;Kloog, Y
通讯作者:
Kloog, Y
影响因子:
4.4
作者:
Goldfinger, Lawrence E.;Ptak, Celeste;Ginsberg, Mark H.
通讯作者:
Ginsberg, Mark H.