PMID- 34281173 OWN - NLM STAT- MEDLINE DCOM- 20210806 LR - 20210806 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 13 DP - 2021 Jul 1 TI - The Consequences of Soluble Epoxide Hydrolase Deletion on Tumorigenesis and Metastasis in a Mouse Model of Breast Cancer. LID - 10.3390/ijms22137120 [doi] LID - 7120 AB - Epoxides and diols of polyunsaturated fatty acids (PUFAs) are bioactive and can influence processes such as tumor cell proliferation and angiogenesis. Studies with inhibitors of the soluble epoxide hydrolase (sEH) in animals overexpressing cytochrome P450 enzymes or following the systemic administration of specific epoxides revealed a markedly increased incidence of tumor metastases. To determine whether PUFA epoxides increased metastases in a model of spontaneous breast cancer, sEH(-/-) mice were crossed onto the polyoma middle T oncogene (PyMT) background. We found that the deletion of the sEH accelerated the growth of primary tumors and increased both the tumor macrophage count and angiogenesis. There were small differences in the epoxide/diol content of tumors, particularly in epoxyoctadecamonoenic acid versus dihydroxyoctadecenoic acid, and marked changes in the expression of proteins linked with cell proliferation and metabolism. However, there was no consequence of sEH inhibition on the formation of metastases in the lymph node or lung. Taken together, our results confirm previous reports of increased tumor growth in animals lacking sEH but fail to substantiate reports of enhanced lymph node or pulmonary metastases. FAU - Kesavan, Rushendhiran AU - Kesavan R AUID- ORCID: 0000-0002-8540-8093 AD - Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, 60590 Frankfurt, Germany. FAU - Fromel, Timo AU - Fromel T AD - Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, 60590 Frankfurt, Germany. FAU - Zukunft, Sven AU - Zukunft S AUID- ORCID: 0000-0002-1811-4562 AD - Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, 60590 Frankfurt, Germany. FAU - Brune, Bernhard AU - Brune B AUID- ORCID: 0000-0001-8237-2841 AD - Institute of Biochemistry I, Faculty of Medicine, Goethe University, 60590 Frankfurt, Germany. FAU - Weigert, Andreas AU - Weigert A AUID- ORCID: 0000-0002-7529-1952 AD - Institute of Biochemistry I, Faculty of Medicine, Goethe University, 60590 Frankfurt, Germany. FAU - Wittig, Ilka AU - Wittig I AD - Functional Proteomics, Institute of Cardiovascular Physiology, Faculty of Medicine, Goethe University, 60590 Frankfurt, Germany. AD - German Centre for Cardiovascular Research (DZHK) Partner Site RheinMain, 60590 Frankfurt, Germany. FAU - Popp, Rudiger AU - Popp R AD - Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, 60590 Frankfurt, Germany. FAU - Fleming, Ingrid AU - Fleming I AUID- ORCID: 0000-0003-1881-3635 AD - Institute for Vascular Signalling, Centre for Molecular Medicine, Goethe University, 60590 Frankfurt, Germany. AD - German Centre for Cardiovascular Research (DZHK) Partner Site RheinMain, 60590 Frankfurt, Germany. LA - eng GR - SFB 815/3 Z1/Deutsche Forschungsgemeinschaft/ GR - EXC 2026, The Cardio-Pulmonary Institute, Project ID: 390649896/Deutsche Forschungsgemeinschaft/ GR - SFB 1039/2 A06/Deutsche Forschungsgemeinschaft/ GR - Else Kroner-Fresenius-Graduiertenkolleg/Else Kroner-Fresenius-Stiftung/ PT - Journal Article DEP - 20210701 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Epoxy Compounds) RN - 0 (Fatty Acids, Unsaturated) RN - 9035-51-2 (Cytochrome P-450 Enzyme System) RN - EC 3.3.2.- (Epoxide Hydrolases) RN - EC 3.3.2.10 (Ephx2 protein, mouse) SB - IM MH - Animals MH - Breast Neoplasms/blood supply/genetics/*metabolism/pathology MH - Carcinogenesis MH - Cell Proliferation/physiology MH - Cell Transformation, Neoplastic MH - Cytochrome P-450 Enzyme System/metabolism MH - Disease Models, Animal MH - Epoxide Hydrolases/genetics/*metabolism MH - Epoxy Compounds/metabolism MH - Fatty Acids, Unsaturated/metabolism MH - Female MH - Gene Deletion MH - Mice MH - Mice, Knockout MH - Neoplasm Metastasis MH - Neovascularization, Pathologic/genetics/metabolism PMC - PMC8269362 OTO - NOTNLM OT - angiogenesis OT - cancer metastases OT - polyunsaturated fatty acid COIS- The authors declare no conflict of interest. EDAT- 2021/07/21 06:00 MHDA- 2021/08/07 06:00 PMCR- 2021/07/01 CRDT- 2021/07/20 01:03 PHST- 2021/06/07 00:00 [received] PHST- 2021/06/25 00:00 [revised] PHST- 2021/06/29 00:00 [accepted] PHST- 2021/07/20 01:03 [entrez] PHST- 2021/07/21 06:00 [pubmed] PHST- 2021/08/07 06:00 [medline] PHST- 2021/07/01 00:00 [pmc-release] AID - ijms22137120 [pii] AID - ijms-22-07120 [pii] AID - 10.3390/ijms22137120 [doi] PST - epublish SO - Int J Mol Sci. 2021 Jul 1;22(13):7120. doi: 10.3390/ijms22137120.