J Clin Invest. 2012 Jan;122(1):178-91. doi: 10.1172/JCI58128. Epub 2011 Dec 19.
Epoxyeicosanoids stimulate multiorgan metastasis and tumor dormancy escape in mice.
Panigrahy D1, Edin ML, Lee CR, Huang S, Bielenberg DR, Butterfield CE, Barnés CM, Mammoto A, Mammoto T, Luria A, Benny O, Chaponis DM, Dudley AC, Greene ER, Vergilio JA, Pietramaggiori G, Scherer-Pietramaggiori SS, Short SM, Seth M, Lih FB, Tomer KB, Yang J, Schwendener RA, Hammock BD, Falck JR, Manthati VL, Ingber DE, Kaipainen A, D'Amore PA, Kieran MW, Zeldin DC.
Tiivistelmä, Abstract
Epoxyeikosanoidit ( C20 hiiliketjun omaavat epoksidi rasvahapot kuten arakidonihaposta tulevat epoxyeikosatrienoidit EET-lajit ja EP:.sta tulevat EEQ- lajit) ovat pieniä molekyylejä, joita sytokromi P450-epoxinaasientsyymit tuottavat .
Epoxyeikosatrieenihapot ( EET) ovat pienia molekyylejä, joita tuottaa sytokromi P450 epoxygenaasit arakidonihaposta (AA) . Ne ovat lipidivälittäjäaineita, jotka toimivat autokriinisinä tai parakriinisinä tekijöinä ja säätelevät tulehdusta ja verisuonien tonusta.
Epoxyeikosatrieenihapot ( EET) ovat pienia molekyylejä, joita tuottaa sytokromi P450 epoxygenaasit arakidonihaposta (AA) . Ne ovat lipidivälittäjäaineita, jotka toimivat autokriinisinä tai parakriinisinä tekijöinä ja säätelevät tulehdusta ja verisuonien tonusta.
- Epoxyeicosatrienoic acids (EETs) are small molecules produced by cytochrome P450 epoxygenases. They are lipid mediators that act as autocrine or paracrine factors to regulate inflammation and vascular tone.
- As a result, drugs that raise EET levels are in clinical trials for the treatment of hypertension and many other diseases. However, despite their pleiotropic effects on cells, little is known about the role of these epoxyeicosanoids in cancer.
- Here, using genetic and pharmacological manipulation of endogenous EET levels, we demonstrate that EETs are critical for primary tumor growth and metastasis in a variety of mouse models of cancer. Remarkably, we found that EETs stimulated extensive multiorgan metastasis and escape from tumor dormancy in several tumor models. This systemic metastasis was not caused by excessive primary tumor growth but depended on endothelium-derived EETs at the site of metastasis.
- Administration of synthetic EETs recapitulated these results, while EET antagonists suppressed tumor growth and metastasis, demonstrating in vivo that pharmacological modulation of EETs can affect cancer growth.
- Furthermore, inhibitors of soluble epoxide hydrolase (sEH), the enzyme that metabolizes EETs, elevated endogenous EET levels and promoted primary tumor growth and metastasis.
- Thus, our data indicate a central role for EETs in tumorigenesis, offering a mechanistic link between lipid signaling and cancer and emphasizing the critical importance of considering possible effects of EET-modulating drugs on cancer.
Comment in
- Epoxyeicosatrienoic acids: a double-edged sword in cardiovascular diseases and cancer. [J Clin Invest. 2012]
- Muistiin 19.2. 2018 suom. 22:09
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