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Wang S, Zhang Y, Zhang D, Meng J, Che N, Zhao X, Liu T. PTGER3 knockdown inhibits the vulnerability of triple-negative breast cancer to ferroptosis. Cancer Sci 2024; 115:2067-2081. [PMID: 38566528 PMCID: PMC11145128 DOI: 10.1111/cas.16169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 03/08/2024] [Accepted: 03/20/2024] [Indexed: 04/04/2024] Open
Abstract
Prostaglandin E receptor 3 (PTGER3) is involved in a variety of biological processes in the human body and is closely associated with the development and progression of a variety of cancer types. However, the role of PTGER3 in triple-negative breast cancer (TNBC) remains unclear. In the present study, low PTGER3 expression was found to be associated with poor prognosis in TNBC patients. PTGER3 plays a crucial role in regulating TNBC cell invasion, migration, and proliferation. Upregulation of PTGER3 weakens the epithelial-mesenchymal phenotype in TNBC and promotes ferroptosis both in vitro and in vivo by repressing glutathione peroxidase 4 (GPX4) expression. On the other hand, downregulation of PTGER3 inhibits ferroptosis by increasing GPX4 expression and activating the PI3K-AKT pathway. Upregulation of PTGER3 also enhances the sensitivity of TNBC cells to paclitaxel. Overall, this study has elucidated critical pathways in which low PTGER3 expression protects TNBC cells from undergoing ferroptosis, thereby promoting its progression. PTGER3 may thus serve as a novel and promising biomarker and therapeutic target for TNBC.
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Affiliation(s)
- Song Wang
- Department of PathologyTianjin Medical UniversityTianjinChina
| | - Yueyao Zhang
- Department of PathologyTianjin Medical UniversityTianjinChina
| | - Dan Zhang
- Department of PathologyTianjin Medical UniversityTianjinChina
| | - Jie Meng
- Department of PathologyTianjin Medical UniversityTianjinChina
| | - Na Che
- Department of PathologyTianjin Medical UniversityTianjinChina
- Department of PathologyTianjin Medical University General HospitalTianjinChina
| | - Xiulan Zhao
- Department of PathologyTianjin Medical UniversityTianjinChina
- Department of PathologyTianjin Medical University General HospitalTianjinChina
| | - Tieju Liu
- Department of PathologyTianjin Medical UniversityTianjinChina
- Department of PathologyTianjin Medical University General HospitalTianjinChina
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Yu FY, Xu Q, Zhao XY, Mo HY, Zhong QH, Luo L, Lau ATY, Xu YM. The Atypical MAP Kinase MAPK15 Is Required for Lung Adenocarcinoma Metastasis via Its Interaction with NF-κB p50 Subunit and Transcriptional Regulation of Prostaglandin E2 Receptor EP3 Subtype. Cancers (Basel) 2023; 15:cancers15051398. [PMID: 36900191 PMCID: PMC10000388 DOI: 10.3390/cancers15051398] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 02/25/2023] Open
Abstract
Studying the relatively underexplored atypical MAP Kinase MAPK15 on cancer progression/patient outcomes and its potential transcriptional regulation of downstream genes would be highly valuable for the diagnosis, prognosis, and potential oncotherapy of malignant tumors such as lung adenocarcinoma (LUAD). Here, the expression of MAPK15 in LUAD was detected by immunohistochemistry and its correlation with clinical parameters such as lymph node metastasis and clinical stage was analyzed. The correlation between the prostaglandin E2 receptor EP3 subtype (EP3) and MAPK15 expression in LUAD tissues was examined, and the transcriptional regulation of EP3 and cell migration by MAPK15 in LUAD cell lines were studied using the luciferase reporter assay, immunoblot analysis, qRT-PCR, and transwell assay. We found that MAPK15 is highly expressed in LUAD with lymph node metastasis. In addition, EP3 is positively correlated with the expression of MAPK15 in LUAD tissues, and we confirmed that MAPK15 transcriptionally regulates the expression of EP3. Upon the knockdown of MAPK15, the expression of EP3 was down-regulated and the cell migration ability was decreased in vitro; similarly, the mesenteric metastasis ability of the MAPK15 knockdown cells was inhibited in in vivo animal experiments. Mechanistically, we demonstrate for the first time that MAPK15 interacts with NF-κB p50 and enters the nucleus, and NF-κB p50 binds to the EP3 promoter and transcriptionally regulates the expression of EP3. Taken together, we show that a novel atypical MAPK and NF-κB subunit interaction promotes LUAD cell migration through transcriptional regulation of EP3, and higher MAPK15 level is associated with lymph node metastasis in patients with LUAD.
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Affiliation(s)
- Fei-Yuan Yu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
| | - Qian Xu
- Laboratory of Molecular Pathology, Department of Pathology, Shantou University Medical College, Shantou 515041, China
| | - Xiao-Yun Zhao
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
| | - Hai-Ying Mo
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
| | - Qiu-Hua Zhong
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
| | - Li Luo
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
| | - Andy T. Y. Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
- Correspondence: (A.T.Y.L.); (Y.-M.X.); Tel.: +86-754-8853-0052 (A.T.Y.L.); +86-754-8890-0437 (Y.-M.X.)
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou 515041, China
- Correspondence: (A.T.Y.L.); (Y.-M.X.); Tel.: +86-754-8853-0052 (A.T.Y.L.); +86-754-8890-0437 (Y.-M.X.)
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Liu B, Li J, Yan H, Tian D, Li H, Zhang Y, Guo T, Wu X, Luo W, Zhou Y. TP and/or EP3 receptors mediate the vasoconstrictor and pressor responses of prostaglandin F 2α in mice and/or humans. FASEB J 2019; 33:2451-2459. [PMID: 30277822 DOI: 10.1096/fj.201801064rr] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The vasoconstrictor and/or pressor effects of prostaglandin (PG)F2α participate in the development of vascular pathologies and limit the clinical use of the agent. This study aimed to determine the receptor types responsible for the vasoconstrictor activity of PGF2α and whether they mediate the pressor response evoked by the prostanoid under in vivo conditions. Experiments were performed on genetically altered mice and/or on vessels from these mice or humans. Here we show that deletion of the thromboxane-prostanoid receptor (TP-/-) abolished or drastically diminished the contraction to PGF2α in isolated mouse vessels (some of which were resistance arteries) and reduced the elevation in blood pressure evoked by the prostanoid under in vivo conditions. In accordance, TP antagonism abolished the contraction in small arteries of human omentum. Further deletion of E prostanoid receptor type 3 (EP3-/-) removed the PGF2α-evoked contraction that remained in some TP-/- arteries and added to the effect of TP-/- on the elevation in blood pressure evoked by the prostanoid under in vivo conditions. In contrast, the uterine contraction to PGF2α mediated via the F prostanoid receptor (FP) was unaltered in TP-/-/EP3-/- mice. These results demonstrate that the non-FP receptors TP and/or EP3 mediate the vasoconstrictor and pressor effects of PGF2α, which are still of concern under clinical conditions.-Liu, B., Li, J., Yan, H., Tian, D., Li, H., Zhang, Y., Guo, T., Wu, X., Luo, W., Zhou, Y. TP and/or EP3 receptors mediate the vasoconstrictor and pressor responses of prostaglandin F2α in mice and/or humans.
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Affiliation(s)
- Bin Liu
- Cardiovascular Research Center, Shantou University Medical College, Shantou, China
| | - Jiarong Li
- Cardiovascular Research Center, Shantou University Medical College, Shantou, China
| | - Hongfei Yan
- Department of Pathology, the Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
| | - Dongping Tian
- Department of Pathology, Shantou University Medical College, Shantou, China; and
| | - Hui Li
- The Central Laboratory, Shantou University Medical College, Shantou, China
| | - Yingzhan Zhang
- Cardiovascular Research Center, Shantou University Medical College, Shantou, China
| | - Tingting Guo
- Cardiovascular Research Center, Shantou University Medical College, Shantou, China
| | - Xiangzhong Wu
- Cardiovascular Research Center, Shantou University Medical College, Shantou, China
| | - Wenhong Luo
- The Central Laboratory, Shantou University Medical College, Shantou, China
| | - Yingbi Zhou
- Cardiovascular Research Center, Shantou University Medical College, Shantou, China
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Martien S, Pluquet O, Vercamer C, Malaquin N, Martin N, Gosselin K, Pourtier A, Abbadie C. Cellular senescence involves an intracrine prostaglandin E2 pathway in human fibroblasts. Biochim Biophys Acta Mol Cell Biol Lipids 2013; 1831:1217-27. [DOI: 10.1016/j.bbalip.2013.04.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Huang HFS, Shu P, Murphy TF, Aisner S, Fitzhugh VA, Jordan ML. Significance of Divergent Expression of Prostaglandin EP4 and EP3 Receptors in Human Prostate Cancer. Mol Cancer Res 2013; 11:427-39. [DOI: 10.1158/1541-7786.mcr-12-0464] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Woodward DF, Jones RL, Narumiya S. International Union of Basic and Clinical Pharmacology. LXXXIII: classification of prostanoid receptors, updating 15 years of progress. Pharmacol Rev 2011; 63:471-538. [PMID: 21752876 DOI: 10.1124/pr.110.003517] [Citation(s) in RCA: 318] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
It is now more than 15 years since the molecular structures of the major prostanoid receptors were elucidated. Since then, substantial progress has been achieved with respect to distribution and function, signal transduction mechanisms, and the design of agonists and antagonists (http://www.iuphar-db.org/DATABASE/FamilyIntroductionForward?familyId=58). This review systematically details these advances. More recent developments in prostanoid receptor research are included. The DP(2) receptor, also termed CRTH2, has little structural resemblance to DP(1) and other receptors described in the original prostanoid receptor classification. DP(2) receptors are more closely related to chemoattractant receptors. Prostanoid receptors have also been found to heterodimerize with other prostanoid receptor subtypes and nonprostanoids. This may extend signal transduction pathways and create new ligand recognition sites: prostacyclin/thromboxane A(2) heterodimeric receptors for 8-epi-prostaglandin E(2), wild-type/alternative (alt4) heterodimers for the prostaglandin FP receptor for bimatoprost and the prostamides. It is anticipated that the 15 years of research progress described herein will lead to novel therapeutic entities.
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Affiliation(s)
- D F Woodward
- Dept. of Biological Sciences RD3-2B, Allergan, Inc., 2525 Dupont Dr., Irvine, CA 92612, USA.
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7
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Harding P, LaPointe MC. Prostaglandin E2 increases cardiac fibroblast proliferation and increases cyclin D expression via EP1 receptor. Prostaglandins Leukot Essent Fatty Acids 2011; 84:147-52. [PMID: 21342756 PMCID: PMC3071899 DOI: 10.1016/j.plefa.2011.01.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 01/12/2011] [Accepted: 01/12/2011] [Indexed: 10/18/2022]
Abstract
PGE(2) affects growth of many cell types. Thus, we hypothesized that PGE(2) would stimulate growth of cardiac fibroblasts. To test our hypothesis we used neonatal rat ventricular fibroblasts (NVF). RT-PCR demonstrated the presence of all 4 PGE(2) receptor (EPs) mRNAs in NVF. Using flow cytometry, we found that PGE(2) decreased the percentage of cells in G0/G1 and increased the number of cells in S phase. PGE(2) also increased expression of cyclin D3, a known regulator of the cell cycle and this effect was mimicked by the EP1/EP3 agonist sulprostone. Next, we found that treatment of NVF with PGE(2) increased phosphorylation of p42/44 MAPK and Akt and that PGE(2)-stimulation of cyclin D3 was antagonized with both a MEK inhibitor and a PI3 kinase inhibitor. In conclusion, PGE(2) stimulates cardiac fibroblast proliferation via EP1 and/or EP3, p42/44 MAPK and Akt-regulation of cyclin D3. These results may be relevant to cardiac fibrosis.
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Affiliation(s)
- Pamela Harding
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI 48202, USA.
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Israel DD, Regan JW. EP(3) prostanoid receptor isoforms utilize distinct mechanisms to regulate ERK 1/2 activation. Biochim Biophys Acta Mol Cell Biol Lipids 2009; 1791:238-45. [PMID: 19416642 DOI: 10.1016/j.bbalip.2009.01.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Revised: 01/06/2009] [Accepted: 01/26/2009] [Indexed: 02/06/2023]
Abstract
Prostaglandin-E(2) (PGE(2)) is a hormone derived from the metabolism of arachidonic acid whose functions include regulation of platelet aggregation, fever and smooth muscle contraction/relaxation. PGE(2) mediates its physiological and pathophysiological effects through its binding to four G-protein coupled receptor subtypes, named EP(1), EP(2), EP(3) and EP(4). The EP(3) prostanoid receptor is unique in that it has multiple isoforms generated by alternative mRNA splicing. These splice variants display differences in tissue expression, constitutive activity and regulation of signaling molecules. To date there are few reports identifying differential activities of EP(3) receptor isoforms and their effects on gene regulation. We generated HEK cell lines expressing the human EP(3-Ia), EP(3-II) or EP(3-III) isoforms. Using immunoblot analysis we found that nM concentrations of PGE(2) strongly stimulated the phosphorylation of ERK 1/2 by the EP(3-II) and EP(3-III) isoforms; whereas, ERK 1/2 phosphorylation by the EP(3-Ia) isoform was minimal and only occurred at muM concentrations of PGE(2). Furthermore, the mechanisms of the PGE(2) mediated phosphorylation of ERK 1/2 by the EP(3-II) and EP(3-III) isoforms were different. Thus, PGE(2) stimulation of ERK 1/2 phosphorylation by the EP(3-III) isoform involves activation of a Galpha(i)/PI3K/PKC/Src and EGFR-dependent pathway; while for the EP(3-II) isoform it involves activation of a Galpha(i)/Src and EGFR-dependent pathway. These differences result in unique differences in the regulation of reporter plasmid activity for the downstream effectors ELK1 and AP-1 by the EP(3-II) and EP(3-III) prostanoid receptor isoforms.
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Affiliation(s)
- Davelene D Israel
- Department of Pharmacology and Toxicology, The University of Arizona, College of Pharmacy, 1703 E. Mabel St., Tucson, AZ 85721, USA
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White KE, Ding Q, Moore BB, Peters-Golden M, Ware LB, Matthay MA, Olman MA. Prostaglandin E2 mediates IL-1beta-related fibroblast mitogenic effects in acute lung injury through differential utilization of prostanoid receptors. THE JOURNAL OF IMMUNOLOGY 2008; 180:637-46. [PMID: 18097066 DOI: 10.4049/jimmunol.180.1.637] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The fibroproliferative response to acute lung injury (ALI) results in severe, persistent respiratory dysfunction. We have reported that IL-1beta is elevated in pulmonary edema fluid in those with ALI and mediates an autocrine-acting, fibroblast mitogenic pathway. In this study, we examine the role of IL-1beta-mediated induction of cyclooxygenase-2 and PGE2, and evaluate the significance of individual E prostanoid (EP) receptors in mediating the fibroproliferative effects of IL-1beta in ALI. Blocking studies on human lung fibroblasts indicate that IL-1beta is the major cyclooxygenase-2 mRNA and PGE2-inducing factor in pulmonary edema fluid and accounts for the differential PGE2 induction noted in samples from ALI patients. Surprisingly, we found that PGE2 produced by IL-1beta-stimulated fibroblasts enhances fibroblast proliferation. Further studies revealed that the effect of fibroblast proliferation is biphasic, with the promitogenic effect of PGE2 noted at concentrations close to that detected in pulmonary edema fluid from ALI patients. The suppressive effects of PGE2 were mimicked by the EP2-selective receptor agonist, butaprost, by cAMP activation, and were lost in murine lung fibroblasts that lack EP2. Conversely, the promitogenic effects of mid-range concentrations of PGE2 were mimicked by the EP3-selective agent, sulprostone, by cAMP reduction, and lost upon inhibition of Gi-mediated signaling with pertussis toxin. Taken together, these data demonstrate that PGE2 can stimulate or inhibit fibroblast proliferation at clinically relevant concentrations, via preferential signaling through EP3 or EP2 receptors, respectively. Such mechanisms may drive the fibroproliferative response to ALI.
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Affiliation(s)
- Kimberly E White
- Department of Medicine, University of Alabama at Birmingham 35294, USA
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10
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Sugiura H, Liu X, Togo S, Kobayashi T, Shen L, Kawasaki S, Kamio K, Wang XQ, Mao LJ, Rennard SI. Prostaglandin E(2) protects human lung fibroblasts from cigarette smoke extract-induced apoptosis via EP(2) receptor activation. J Cell Physiol 2007; 210:99-110. [PMID: 16998801 DOI: 10.1002/jcp.20825] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Prostaglandin E(2) (PGE(2)) has been shown to have a strong cytoprotective effect, inhibiting apoptosis. In the present study, we evaluated whether PGE(2) has a protective effect on cigarette smoke extract (CSE)-induced apoptosis in human lung fibroblasts. Apoptosis was assessed by various methods, including DNA content analysis. CSE (15%-20%) led to apoptosis and induced imbalance in favor of pro- over anti-apoptotic protein expression and activated caspases. PGE(2) blocked CSE-induced apoptosis and modulated the balance of pro- and anti-apoptotic proteins and decreased the activation of caspases. This anti-apoptotic effect was mediated via EP(2) receptor activation as the EP(2) agonist butaprost mimicked PGE(2) activity and siRNA for the EP(2) receptor blocked it. An adenylyl cyclase inhibitor was found to abolish the PGE(2)-mediated cytoprotective effect. Correspondingly, c-AMP analogs blocked CSE-induced apoptosis. Consistently, the protein kinase A (PKA) inhibitor KT-5720 abolished PGE(2)-mediated protection. PGE(2) and butaprost phosphorylated Bad and KT-5720 blocked phosphorylation. These results suggest that PGE(2) inhibits CSE-induced apoptosis via EP(2) receptor activation and activation of PKA, which leads to an alteration in the balance between pro- and anti-apoptotic factors. Through such a mechanism, PGE(2) may alter survival of cells in the smoke-exposed lungs, thus affecting the pathogenesis of cigarette smoke-induced disease.
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Affiliation(s)
- Hisatoshi Sugiura
- University of Nebraska Medical Center, Nebraska Medical Center, Omaha, Nebraska 68198, USA
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Nieves D, Moreno JJ. Hydroxyeicosatetraenoic acids released through the cytochrome P-450 pathway regulate 3T6 fibroblast growth. J Lipid Res 2006; 47:2681-9. [PMID: 16980726 DOI: 10.1194/jlr.m600212-jlr200] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Eicosanoids participate in the regulation of cellular proliferation. Thus, we observed that prostaglandin E(2) interaction with membrane receptors is involved in the control of 3T6 fibroblast growth induced by serum. However, our results suggested that another arachidonic acid pathway might be implicated in these events. Our results show that 3T6 fibroblasts synthesized hydroxyeicosatetraenoic acids (HETEs) such as 12-HETE through the cytochrome P-450 (CYP450) pathway. However, 3T6 fibroblasts did not produce leukotriene B(4) (LTB(4)), and lipoxygenase inhibitors and LT antagonists failed to inhibit 3T6 fibroblast growth induced by FBS. In contrast, we observed that CYP450 inhibitors such as SKF-525A, 17-octadecynoic acid, 1-aminobenzotriazole, and 6-(2-propargyloxyphenyl)hexanoic acid reduced 12(S)-HETE levels, 3T6 fibroblast growth, and DNA synthesis induced by FBS. The impairment of DNA synthesis and 3T6 fibroblast growth induced by SKF-525A were reversed by exogenous addition of HETEs. Moreover, we report that 5-HETE, 12(S)-HETE, and 15(S)-HETE are mitogenic on 3T6 fibroblast in the absence of another growth factor, and this effect was dependent on the activation of the phosphatidylinositol-3-kinase pathway. In conclusion, our results show that HETEs, probably produced by CYP450, are involved in the control of 3T6 fibroblast growth.
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Affiliation(s)
- Diana Nieves
- Department of Physiology, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
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