| RRC ID |
86841
|
| 著者 |
Kamiyama M, Shirai T, Tamura S, Suzuki-Inoue K, Ehata S, Takahashi K, Miyazono K, Hayakawa Y, Sato T, Takeda K, Naguro I, Ichijo H.
|
| タイトル |
ASK1 facilitates tumor metastasis through phosphorylation of an ADP receptor P2Y12 in platelets.
|
| ジャーナル |
Cell Death Differ
|
| Abstract |
Tumor metastasis is the major cause of deaths in cancer patients and is modulated by intertwined stress-responsive signaling cascades. Here we demonstrate that deletion of stress-responsive apoptosis signal-regulating kinase 1 (Ask1) in platelets results in unstable hemostasis and drastic attenuation of tumor lung metastasis, both of which are attributable to platelet dysfunction. Platelet-specific deletion of Ask1 in mice leads to defects in ADP-dependent platelet aggregation, unstable hemostasis and subsequent attenuation of tumor metastasis. We also revealed that activating phosphorylation of Akt is attenuated in Ask1-deficient platelets, contrary to the previous reports suggesting that Akt is negatively regulated by ASK1. Mechanistically, ASK1-JNK/p38 axis phosphorylates an ADP receptor P2Y12 at Thr345, which is required for the ADP-dependent sustained Akt activity that is vital to normal platelet functions. Our findings offer insight into positive regulation of Akt signaling through P2Y12 phosphorylation as well as MAPK signaling in platelets by ASK1 and suggest that ASK1-JNK/p38 axis provides a new therapeutic opportunity for tumor metastasis.
|
| 巻・号 |
24(12)
|
| ページ |
2066-2076
|
| 公開日 |
2017-12-1
|
| DOI |
10.1038/cdd.2017.114
|
| PII |
cdd2017114
|
| PMID |
28753204
|
| PMC |
PMC5686340
|
| MeSH |
Animals
Blood Platelets / enzymology
Blood Platelets / metabolism*
CHO Cells
Carcinoma, Lewis Lung / metabolism
Carcinoma, Lewis Lung / pathology
Cricetulus
Female
Humans
MAP Kinase Kinase Kinase 5 / blood*
MAP Kinase Signaling System
Melanoma, Experimental / metabolism
Melanoma, Experimental / pathology
Mice
Mice, Inbred C57BL
Neoplasm Metastasis
Phosphorylation
Proto-Oncogene Proteins c-akt / metabolism
Purinergic P2Y Receptor Antagonists / pharmacology
Receptors, Purinergic P2Y12 / blood*
|
| IF |
10.717
|
| リソース情報 |
| 実験動物マウス |
RBRC02302 |
