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Wang K, Liao PY, Chang WC, Yang CR, Su YT, Wu PC, Wu YC, Hung YC, Akhtar N, Lai HC, Ma WL. Linoleate-pazopanib conjugation as active pharmacological ingredient to abolish hepatocellular carcinoma growth. Front Pharmacol 2024; 14:1281067. [PMID: 38293667 PMCID: PMC10824963 DOI: 10.3389/fphar.2023.1281067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/26/2023] [Indexed: 02/01/2024] Open
Abstract
Small molecule compounds targeting multiple kinases involved in neoangiogenesis have shown survival benefits in patients with unresectable hepatocellular carcinoma (HCC). Nonetheless, despite the beneficial effects of multikinase inhibitors (MKIs), a lack of boosting adjuvant limits their objective response rate. Lipid conjugates have been used to improve delivery efficacy or pharmaceutical benefits for decades. However, the feasibility of utilizing lipid-drug conjugates (LDCs) in HCC regimens remains untested. In this study, oral feeding of linoleate-fluorescein isothiocyanate conjugates showed that the compound was well distributed in a spontaneous HCC mouse model. Therefore, a rationale design was developed for chemically synthesizing a linoleate-pazopanib conjugate (LAPC). The LAPC showed a significantly improved cytotoxicity compared to the parental drug pazopanib. Pazopanib's angiogenic suppressing signals were not observed in LAPC-treated HCC cells, potentially suggesting an altered mechanism of action (MOA). In an efficacy trial comparing placebo, oral pazopanib, and LAPC treatments in the hepatitis B virus transgene-related spontaneous HCC mouse model (HBVtg-HCC), the LAPC treatment demonstrated superior tumor ablating capacity in comparison to both placebo and pazopanib treatments, without any discernible systemic toxicity. The LAPC exposure is associated with an apoptosis marker (Terminal deoxynucleotidyl transferase dUTP nick end labeling [TUNEL]) and an enhanced ferroptosis (glutathione peroxidase 4 [GPX4]) potential in HBVtg-HCC tumors. Therefore, the LAPC showed excellent HCC ablative efficacy with altered MOA. The molecular mechanisms of the LAPC and LDCs for HCC therapeutics are of great academic interest. Further comprehensive preclinical trials (e.g., chemical-manufacture-control, toxicity, distribution, and pharmacokinetics/pharmacodynamics) are expected.
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Affiliation(s)
- Ke Wang
- Graduate Institute of Biomedical Sciences, and Ph.D. Program for Health Science and Industry, School of Medicine, China Medical University, Taichung, Taiwan
- Department of Medical Research, Chinese Medicine Research and Development Center, and Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan
| | - Pei-Yin Liao
- Graduate Institute of Biomedical Sciences, and Ph.D. Program for Health Science and Industry, School of Medicine, China Medical University, Taichung, Taiwan
| | - Wei-Chun Chang
- Department of Medical Research, Chinese Medicine Research and Development Center, and Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan
| | - Cian-Ru Yang
- Graduate Institute of Biomedical Sciences, and Ph.D. Program for Health Science and Industry, School of Medicine, China Medical University, Taichung, Taiwan
| | - Yu-Ting Su
- Graduate Institute of Biomedical Sciences, and Ph.D. Program for Health Science and Industry, School of Medicine, China Medical University, Taichung, Taiwan
| | - Ping-Ching Wu
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan
- Institute of Oral Medicine and Department of Stomatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, Taiwan
- Medical Device Innovation Center, Taiwan Innovation Center of Medical Devices and Technology, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan
| | - Yang-Chang Wu
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Yao-Ching Hung
- Department of Medical Research, Chinese Medicine Research and Development Center, and Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan
- Department of Obstetrics and Gynecology, Asia University Hospital, Taichung, Taiwan
| | - Najim Akhtar
- Graduate Institute of Biomedical Sciences, and Ph.D. Program for Health Science and Industry, School of Medicine, China Medical University, Taichung, Taiwan
| | - Hsueh-Chou Lai
- Department of Medical Research, Chinese Medicine Research and Development Center, and Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan
- Center for Digestive Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Wen-Lung Ma
- Graduate Institute of Biomedical Sciences, and Ph.D. Program for Health Science and Industry, School of Medicine, China Medical University, Taichung, Taiwan
- Department of Medical Research, Chinese Medicine Research and Development Center, and Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan
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Mapelli-Brahm A, Sánchez R, Pan X, Moreno-Pérez AJ, Garcés R, Martínez-Force E, Weselake RJ, Salas JJ, Venegas-Calerón M. Functional Characterization of Lysophosphatidylcholine: Acyl-CoA Acyltransferase Genes From Sunflower ( Helianthus annuus L.). Front Plant Sci 2020; 11:403. [PMID: 32351524 PMCID: PMC7176023 DOI: 10.3389/fpls.2020.00403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 03/20/2020] [Indexed: 05/05/2023]
Abstract
Lysophosphatidylcholine acyltransferase (LPCAT, EC 2.3.1.23) is an evolutionarily conserved key enzyme in the Lands cycle that catalyzes acylation of lysophosphatidylcholine (LPC) to produce phosphatidylcholine (PC), the main phospholipid in cellular membranes. In this study, three LPCAT genes from sunflower were identified and the corresponding proteins characterized. These HaLPCAT genes encoded functionally active enzymes that were able to complement a deficient yeast mutant. Moreover, enzymatic assays were carried out using microsomal preparations of the yeast cells. When acyl specificities were measured in the forward reaction, these enzymes exhibited a substrate preference for unsaturated acyl-CoAs, especially for linolenoyl-CoA, while in the reverse reaction, linoleoyl or linolenoyl acyl groups were transferred from PC to acyl-CoA to a similar extent. Expression levels of LPCAT genes were studied revealing distinct tissue-specific expression patterns. In summary, this study suggests that the combined forward and reverse reactions catalyzed by sunflower LPCATs facilitate acyl-exchange between the sn-2 position of PC and the acyl-CoA pool. Sunflower LPCATs displayed different characteristics, which could point to different functionalities, favoring the enrichment of seed triacylglycerols (TAGs) with polyunsaturated fatty acid (PUFA).
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Affiliation(s)
- Ana Mapelli-Brahm
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Seville, Spain
- Department of Agricultural, Food and Nutritional Science, 410 Agriculture/Forestry Centre, University of Alberta, Edmonton, AB, Canada
| | - Rosario Sánchez
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Seville, Spain
| | - Xue Pan
- Department of Agricultural, Food and Nutritional Science, 410 Agriculture/Forestry Centre, University of Alberta, Edmonton, AB, Canada
| | | | - Rafael Garcés
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Seville, Spain
| | | | - Randall J. Weselake
- Department of Agricultural, Food and Nutritional Science, 410 Agriculture/Forestry Centre, University of Alberta, Edmonton, AB, Canada
| | - Joaquín J. Salas
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Seville, Spain
- *Correspondence: Joaquín J. Salas,
| | - Mónica Venegas-Calerón
- Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, Seville, Spain
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, Seville, Spain
- Mónica Venegas-Calerón,
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Miyashita K, Yasuda M, Ota T, Suzuki T. Antioxidative Activity of a Cathodic Solution Produced by the Electrolysis of a Dilute NaCl Solution. Biosci Biotechnol Biochem 1999; 63:421-3. [PMID: 27393068 DOI: 10.1271/bbb.63.421] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The effectiveness was evaluated of a cathodic solution prepared by the electrolysis of an NaCl solution in inhibiting the aqueous oxidation of ethyl linoleate and ethyl docosahexaenoate. The decrease in unoxidized substrate and the formation of total peroxides during oxidation indicate that the cathodic solution completely inhibited the oxidation of both ethyl esters, while these lipids were easily oxidized in an NaCl solution and in distilled water. The antioxidative activity of the cathodic solution was confirmed after open incubation for 3 days and 7 days at 37°C, although the scavenging ability of the cathodic solution toward DPPH radicals disappeared during this incubation.
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Nieman DC, Shanely RA, Luo B, Meaney MP, Dew DA, Pappan KL. Metabolomics approach to assessing plasma 13- and 9-hydroxy-octadecadienoic acid and linoleic acid metabolite responses to 75-km cycling. Am J Physiol Regul Integr Comp Physiol 2014; 307:R68-74. [PMID: 24760997 DOI: 10.1152/ajpregu.00092.2014] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bioactive oxidized linoleic acid metabolites (OXLAMs) include 13- and 9-hydroxy-octadecadienoic acid (13-HODE + 9-HODE) and have been linked to oxidative stress, inflammation, and numerous pathological and physiological states. The purpose of this study was to measure changes in plasma 13-HODE + 9-HODE following a 75-km cycling bout and identify potential linkages to linoleate metabolism and established biomarkers of oxidative stress (F2-isoprostanes) and inflammation (cytokines) using a metabolomics approach. Trained male cyclists (N = 19, age 38.0 ± 1.6 yr, wattsmax 304 ± 10.5) engaged in a 75-km cycling time trial on their own bicycles using electromagnetically braked cycling ergometers (2.71 ± 0.07 h). Blood samples were collected preexercise, immediately post-, 1.5 h post-, and 21 h postexercise, and analyzed for plasma cytokines (IL-6, IL-8, IL-10, tumor necrosis factor-α, monocyte chemoattractant protein-1, granulocyte colony-stimulating factor), F2-isoprostanes, and shifts in metabolites using global metabolomics procedures with gas chromatography mass spectrometry (GC-MS) and liquid chromatography mass spectrometry (LC-MS). 13-HODE + 9-HODE increased 3.1-fold and 1.7-fold immediately post- and 1.5 h postexercise (both P < 0.001) and returned to preexercise levels by 21-h postexercise. Post-75-km cycling plasma levels of 13-HODE + 9-HODE were not significantly correlated with increases in plasma cytokines but were positively correlated with postexercise F2-isoprostanes (r = 0.75, P < 0.001), linoleate (r = 0.54, P = 0.016), arachidate (r = 0.77, P < 0.001), 12,13-dihydroxy-9Z-octadecenoate (12,13-DiHOME) (r = 0.60, P = 0.006), dihomo-linolenate (r = 0.57, P = 0.011), and adrenate (r = 0.56, P = 0.013). These findings indicate that prolonged and intensive exercise caused a transient, 3.1-fold increase in the stable linoleic acid oxidation product 13-HODE + 9-HODE and was related to increases in F2-isoprostanes, linoleate, and fatty acids in the linoleate conversion pathway. These data support the use of 13-HODE + 9-HODE as an oxidative stress biomarker in acute exercise investigations.
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Affiliation(s)
- David C Nieman
- Appalachian State University, Human Performance Lab, North Carolina Research Campus, Kannapolis, North Carolina;
| | - R Andrew Shanely
- Appalachian State University, Human Performance Lab, North Carolina Research Campus, Kannapolis, North Carolina
| | - Beibei Luo
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China; and
| | - Mary Pat Meaney
- Appalachian State University, Human Performance Lab, North Carolina Research Campus, Kannapolis, North Carolina
| | - Dustin A Dew
- Appalachian State University, Human Performance Lab, North Carolina Research Campus, Kannapolis, North Carolina
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Hagen RM, Rhodes A, Ladomery MR. Conjugated linoleate reduces prostate cancer viability whereas the effects of oleate and stearate are cell line-dependent. Anticancer Res 2013; 33:4395-4400. [PMID: 24123008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND In this study, responses to fatty acid treatments in commonly used prostate cancer cell culture models and variability of gene expression between them were determined. MATERIALS AND METHODS PC3, DU145, LNCaP, VCaP and PNT2 cells were treated with 100 μM of either oleate, stearate or conjugated linoleate. Cell proliferation and viability were assessed using trypan blue and 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay respectively. Gene expression was measured using real-time polymerase chain reaction (PCR). RESULTS Conjugated linoleic acid reduced cell proliferation and viability in all prostate cancer cell lines, whilst the effects of oleic and stearic acid on proliferation were found to be cell line-dependent. A reduction in gene expression of fatty acid desaturases was observed in prostate cancer cell lines compared to normal prostate cells. CONCLUSION Differential responses of the cell lines investigated here to fatty acid treatment suggest that multiple prostate cancer cell line models should be used when designing experiments aimed at examining lipid metabolism in prostate cancer.
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Affiliation(s)
- Rachel M Hagen
- University of the West of England, Bristol, U.K. Tel: +44 1173282102,
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L'homme L, Esser N, Riva L, Scheen A, Paquot N, Piette J, Legrand-Poels S. Unsaturated fatty acids prevent activation of NLRP3 inflammasome in human monocytes/macrophages. J Lipid Res 2013; 54:2998-3008. [PMID: 24006511 DOI: 10.1194/jlr.m037861] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The NLRP3 inflammasome is involved in many obesity-associated diseases, such as type 2 diabetes, atherosclerosis, and gouty arthritis, through its ability to induce interleukin (IL)-1β release. The molecular link between obesity and inflammasome activation is still unclear, but free fatty acids have been proposed as one triggering event. Here we reported opposite effects of saturated fatty acids (SFAs) compared with unsaturated fatty acids (UFAs) on NLRP3 inflammasome in human monocytes/macrophages. Palmitate and stearate, both SFAs, triggered IL-1β secretion in a caspase-1/ASC/NLRP3-dependent pathway. Unlike SFAs, the UFAs oleate and linoleate did not lead to IL-1β secretion. In addition, they totally prevented the IL-1β release induced by SFAs and, with less efficiency, by a broad range of NLRP3 inducers, including nigericin, alum, and monosodium urate. UFAs did not affect the transcriptional effect of SFAs, suggesting a specific effect on the NLRP3 activation. These results provide a new anti-inflammatory mechanism of UFAs by preventing the activation of the NLRP3 inflammasome and, therefore, IL-1β processing. By this way, UFAs might play a protective role in NLRP3-associated diseases.
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Affiliation(s)
- Laurent L'homme
- Laboratory of Virology and Immunology, GIGA-Signal Transduction
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Rogowski MP, Flowers MT, Stamatikos AD, Ntambi JM, Paton CM. SCD1 activity in muscle increases triglyceride PUFA content, exercise capacity, and PPARδ expression in mice. J Lipid Res 2013; 54:2636-46. [PMID: 23918045 DOI: 10.1194/jlr.m035865] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Stearoyl-CoA desaturase (SCD)1 converts saturated fatty acids into monounsaturated fatty acids. Using muscle overexpression, we sought to determine the role of SCD1 expression in glucose and lipid metabolism and its effects on exercise capacity in mice. Wild-type C57Bl/6 (WT) and SCD1 muscle transgenic (SCD1-Tg) mice were generated, and expression of the SCD1 transgene was restricted to skeletal muscle. SCD1 overexpression was associated with increased triglyceride (TG) content. The fatty acid composition of the muscle revealed a significant increase in polyunsaturated fatty acid (PUFA) content of TG, including linoleate (18:2n6). Untrained SCD1-Tg mice also displayed significantly increased treadmill exercise capacity (WT = 6.6 ± 3 min, Tg = 71.9 ± 9.5 min; P = 0.0009). SCD1-Tg mice had decreased fasting plasma glucose, glucose transporter (GLUT)1 mRNA, fatty acid oxidation, mitochondrial content, and increased peroxisome proliferator-activated receptor (PPAR)δ and Pgc-1 protein expression in skeletal muscle. In vitro studies in C2C12 myocytes revealed that linoleate (18:2n6) and not oleate (18:1n9) caused a 3-fold increase in PPARδ and a 9-fold increase in CPT-1b with a subsequent increase in fat oxidation. The present model suggests that increasing delta-9 desaturase activity of muscle increases metabolic function, exercise capacity, and lipid oxidation likely through increased PUFA content, which increases PPARδ expression and activity. However, the mechanism of action that results in increased PUFA content of SCD1-Tg mice remains to be elucidated.
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Affiliation(s)
- Michael P Rogowski
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX; and
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Hernández ML, Guschina IA, Martínez-Rivas JM, Mancha M, Harwood JL. The utilization and desaturation of oleate and linoleate during glycerolipid biosynthesis in olive (Olea europaea L.) callus cultures. J Exp Bot 2008; 59:2425-35. [PMID: 18515829 PMCID: PMC2423666 DOI: 10.1093/jxb/ern121] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2008] [Revised: 03/05/2008] [Accepted: 03/18/2008] [Indexed: 05/21/2023]
Abstract
Callus cultures from olive (Olea europaea L.) were used to study characteristics of desaturation in this oil-rich tissue. The incorporation of [1-(14)C]oleate and [1-(14)C]linoleate into complex lipids and their further desaturation was followed in incubations of up to 48 h. Both radiolabelled fatty acids were rapidly incorporated into lipids, especially phosphatidylcholine and triacylglycerol. Radiolabelling of these two lipids peaked after 1-4 h, after which it fell. In contrast, other phosphoglycerides and the galactosylglycerides were labelled in a more sustained manner. [1-(14)C]Linoleate was almost exclusively found in the galactolipids. With [1-(14)C]linoleate as a precursor, the only significant desaturation to linolenate was in the galactolipids. Monogalactosyldiacylglycerol was the first lipid in which [1-(14)C]linoleate and [1-(14)C]linolenate appeared after incubation of the calli with [1-(14)C]oleate and [1-(14)C]linoleate, respectively. The presence of radioactivity in the plastidial lipids shows that both [1-(14)C]oleate and [1-(14)C]linoleate can freely enter the chloroplast. Two important environmental effects were also examined. Raised incubation temperatures (30-35 degrees C) reduced oleate desaturation and this was also reflected in the endogenous fatty acid composition. Low light also caused less oleate desaturation. The data indicate that lysophosphatidylcholine acyltransferase is important for the entry of oleate and linoleate into olive callus lipid metabolism and phospholipid:diacylglycerol acyltransferase may be involved in triacylglycerol biosynthesis. In addition, it is shown that plastid desaturases are mainly responsible for the production of polyunsaturated fatty acids. Individual fatty acid desaturases were differently susceptible to environmental stresses with FAD2 being reduced by both high temperature and low light, whereas FAD7 was only affected by high temperature.
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Affiliation(s)
- M. Luisa Hernández
- Instituto de la Grasa (CSIC), Av. Padre Garcia Tejero 4, E-41012 Seville, Spain
- School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK
| | | | | | - Manuel Mancha
- Instituto de la Grasa (CSIC), Av. Padre Garcia Tejero 4, E-41012 Seville, Spain
| | - John L. Harwood
- School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK
- To whom correspondence should be addressed. E-mail:
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Coffey MJ, Natarajan R, Chumley PH, Coles B, Thimmalapura PR, Nowell M, Kühn H, Lewis MJ, Freeman BA, O'Donnell VB. Catalytic consumption of nitric oxide by 12/15- lipoxygenase: inhibition of monocyte soluble guanylate cyclase activation. Proc Natl Acad Sci U S A 2001; 98:8006-11. [PMID: 11427723 PMCID: PMC35458 DOI: 10.1073/pnas.141136098] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2001] [Indexed: 01/24/2023] Open
Abstract
12/15-Lipoxygenase (LOX) activity is elevated in vascular diseases associated with impaired nitric oxide (( small middle dot)NO) bioactivity, such as hypertension and atherosclerosis. In this study, primary porcine monocytes expressing 12/15-LOX, rat A10 smooth muscle cells transfected with murine 12/15-LOX, and purified porcine 12/15-LOX all consumed *NO in the presence of lipid substrate. Suppression of LOX diene conjugation by *NO was also found, although the lipid product profile was unchanged. *NO consumption by porcine monocytes was inhibited by the LOX inhibitor, eicosatetraynoic acid. Rates of arachidonate (AA)- or linoleate (LA)-dependent *NO depletion by porcine monocytes (2.68 +/- 0.03 nmol x min(-1) x 10(6) cells(-1) and 1.5 +/- 0.25 nmol x min(-1) x 10(6) cells(-1), respectively) were several-fold greater than rates of *NO generation by cytokine-activated macrophages (0.1-0.2 nmol x min(-1) x 10(6) cells(-1)) and LA-dependent *NO consumption by primary porcine monocytes inhibited *NO activation of soluble guanylate cyclase. These data indicate that catalytic *NO consumption by 12/15-LOX modulates monocyte *NO signaling and suggest that LOXs may contribute to vascular dysfunction not only by the bioactivity of their lipid products, but also by serving as catalytic sinks for *NO in the vasculature.
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Affiliation(s)
- M J Coffey
- Wales Heart Research Institute, University of Wales College of Medicine, Cardiff CF14 4XN, United Kingdom
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