Cell type-dependent differential activation of ERK by oncogenic KRAS or BRAF in the mouse intestinal epithelium
Cell type-dependent differential activation of ERK by oncogenic KRAS or BRAF in the mouse intestinal epithelium
复制标题
小鼠肠上皮中致癌 KRAS 或 BRAF 对 ERK 的细胞类型依赖性差异激活
DOI:
10.1101/340844
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发表时间:
--
期刊:
影响因子:
--
通讯作者:
Morkel
中科院分区:
文献类型:
--
作者:
Brandt;Uhlitz;Riemer;Giesecke;Schulze;El-Shimy;E.A. Fauler;Mielke;Herrmann;Blüthgen;Morkel
Oncogenic mutations in KRAS or BRAF are frequent in colorectal cancer and activate the ERK kinase. Here, we find graded ERK phosphorylation correlating with cell differentiation in patient-derived colorectal cancer organoids with and without KRAS mutations. Using reporters, single cell transcriptomics and mass cytometry, we observe cell type-specific phosphorylation of ERK in response to transgenic KRASG12Vin mouse intestinal organoids, while transgenic BRAFV600Eactivates ERK in all cells. Quantitative network modelling from perturbation data reveals that activation of ERK is shaped by cell type-specific MEK to ERK feed forward and negative feedback signalling. We identify dual-specificity phosphatases as candidate modulators of ERK in the intestine. Furthermore, we find that oncogenic KRAS, together with β-Catenin, favours expansion of crypt cells with high ERK activity. Our experiments highlight key differences between oncogenic BRAF and KRAS in colorectal cancer and find unexpected heterogeneity in a signalling pathway with fundamental relevance for cancer therapy.
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影响因子:
29.4
作者:
Wang F;Scoville D;He XC;Mahe MM;Box A;Perry JM;Smith NR;Lei NY;Davies PS;Fuller MK;Haug JS;McClain M;Gracz AD;Ding S;Stelzner M;Dunn JC;Magness ST;Wong MH;Martin MG;Helmrath M;Li L
通讯作者:
Li L
影响因子:
64.5
作者:
Schwitalla, Sarah;Fingerle, Alexander A.;Greten, Florian R.
通讯作者:
Greten, Florian R.
影响因子:
3
作者:
Suloway, C;Pulokas, J;Carragher, B
通讯作者:
Carragher, B
DOI:
10.1073/pnas.1607327113
发表时间:
2016-09-13
影响因子:
11.1
作者:
Sasaki, Nobuo;Sachs, Norman;Clevers, Hans
通讯作者:
Clevers, Hans
DOI:
10.1083/jcb.142.3.625
发表时间:
1998-08-10
期刊:
The Journal of cell biology
影响因子:
--
作者:
Lenormand P;Brondello JM;Brunet A;Pouysségur J
通讯作者:
Pouysségur J