1
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Nakashima F, Giménez-Bastida JA, Luis PB, Presley SH, Boer RE, Chiusa M, Shibata T, Sulikowski GA, Pozzi A, Schneider C. The 5-lipoxygenase/cyclooxygenase-2 cross-over metabolite, hemiketal E 2, enhances VEGFR2 activation and promotes angiogenesis. J Biol Chem 2023; 299:103050. [PMID: 36813233 PMCID: PMC10040730 DOI: 10.1016/j.jbc.2023.103050] [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: 06/23/2022] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/23/2023] Open
Abstract
Consecutive oxygenation of arachidonic acid by 5-lipoxygenase and cyclooxygenase-2 yields the hemiketal eicosanoids, HKE2 and HKD2. Hemiketals stimulate angiogenesis by inducing endothelial cell tubulogenesis in culture; however, how this process is regulated has not been determined. Here, we identify vascular endothelial growth factor receptor 2 (VEGFR2) as a mediator of HKE2-induced angiogenesis in vitro and in vivo. We found that HKE2 treatment of human umbilical vein endothelial cells dose-dependently increased the phosphorylation of VEGFR2 and the downstream kinases ERK and Akt that mediated endothelial cell tubulogenesis. In vivo, HKE2 induced the growth of blood vessels into polyacetal sponges implanted in mice. HKE2-mediated effects in vitro and in vivo were blocked by the VEGFR2 inhibitor vatalanib, indicating that the pro-angiogenic effect of HKE2 was mediated by VEGFR2. HKE2 covalently bound and inhibited PTP1B, a protein tyrosine phosphatase that dephosphorylates VEGFR2, thereby providing a possible molecular mechanism for how HKE2 induced pro-angiogenic signaling. In summary, our studies indicate that biosynthetic cross-over of the 5-lipoxygenase and cyclooxygenase-2 pathways gives rise to a potent lipid autacoid that regulates endothelial cell function in vitro and in vivo. These findings suggest that common drugs targeting the arachidonic acid pathway could prove useful in antiangiogenic therapy.
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Affiliation(s)
- Fumie Nakashima
- Division of Clinical Pharmacology, Department of Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Juan A Giménez-Bastida
- Division of Clinical Pharmacology, Department of Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Paula B Luis
- Division of Clinical Pharmacology, Department of Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Sai H Presley
- Division of Clinical Pharmacology, Department of Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Robert E Boer
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Manuel Chiusa
- Division of Nephrology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Takahiro Shibata
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Gary A Sulikowski
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA
| | - Ambra Pozzi
- Division of Nephrology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA; Veterans Affairs Hospital, Nashville, Tennessee, USA.
| | - Claus Schneider
- Division of Clinical Pharmacology, Department of Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee, USA.
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2
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Beccacece L, Abondio P, Bini C, Pelotti S, Luiselli D. The Link between Prostanoids and Cardiovascular Diseases. Int J Mol Sci 2023; 24:ijms24044193. [PMID: 36835616 PMCID: PMC9962914 DOI: 10.3390/ijms24044193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/17/2023] [Accepted: 02/18/2023] [Indexed: 02/22/2023] Open
Abstract
Cardiovascular diseases are the leading cause of global deaths, and many risk factors contribute to their pathogenesis. In this context, prostanoids, which derive from arachidonic acid, have attracted attention for their involvement in cardiovascular homeostasis and inflammatory processes. Prostanoids are the target of several drugs, but it has been shown that some of them increase the risk of thrombosis. Overall, many studies have shown that prostanoids are tightly associated with cardiovascular diseases and that several polymorphisms in genes involved in their synthesis and function increase the risk of developing these pathologies. In this review, we focus on molecular mechanisms linking prostanoids to cardiovascular diseases and we provide an overview of genetic polymorphisms that increase the risk for cardiovascular disease.
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Affiliation(s)
- Livia Beccacece
- Computational Genomics Lab, Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy
- Correspondence: (L.B.); (P.A.)
| | - Paolo Abondio
- aDNA Lab, Department of Cultural Heritage, University of Bologna, Ravenna Campus, 48121 Ravenna, Italy
- Correspondence: (L.B.); (P.A.)
| | - Carla Bini
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Susi Pelotti
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Donata Luiselli
- aDNA Lab, Department of Cultural Heritage, University of Bologna, Ravenna Campus, 48121 Ravenna, Italy
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3
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Marcos Pasero H, García Tejedor A, Giménez-Bastida JA, Laparra Llopis JM. Modifiable Innate Biology within the Gut–Brain Axis for Alzheimer’s Disease. Biomedicines 2022; 10:biomedicines10092098. [PMID: 36140198 PMCID: PMC9495985 DOI: 10.3390/biomedicines10092098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
Alzheimer’s disease (AD) is a prototypical inflammation-associated loss of cognitive function, with approximately 90% of the AD burden associated with invading myeloid cells controlling the function of the resident microglia. This indicates that the immune microenvironment has a pivotal role in the pathogenesis of the disease. Multiple peripheral stimuli, conditioned by complex and varied interactions between signals that stem at the intestinal level and neuroimmune processes, are involved in the progression and severity of AD. Conceivably, the targeting of critical innate immune signals and cells is achievable, influencing immune and metabolic health within the gut–brain axis. Considerable progress has been made, modulating many different metabolic and immune alterations that can drive AD development. However, non-pharmacological strategies targeting immunometabolic processes affecting neuroinflammation in AD treatment remain general and, at this point, are applied to all patients regardless of disease features. Despite these possibilities, improved knowledge of the relative contribution of the different innate immune cells and molecules comprising the chronically inflamed brain network to AD pathogenesis, and elucidation of the network hierarchy, are needed for planning potent preventive and/or therapeutic interventions. Moreover, an integrative perspective addressing transdisciplinary fields can significantly contribute to molecular pathological epidemiology, improving the health and quality of life of AD patients. This review is intended to gather modifiable immunometabolic processes based on their importance in the prevention and management of AD.
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Affiliation(s)
- Helena Marcos Pasero
- Bioactivity and Nutritional Immunology Group (BIOINUT), Faculty of Health Sciences, Universidad Internacional de Valencia—VIU, Pintor Sorolla 21, 46002 Valencia, Spain
| | - Aurora García Tejedor
- Bioactivity and Nutritional Immunology Group (BIOINUT), Faculty of Health Sciences, Universidad Internacional de Valencia—VIU, Pintor Sorolla 21, 46002 Valencia, Spain
| | - Juan Antonio Giménez-Bastida
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Department Food Science and Technology, CEBAS-CSIC, Campus de Espinardo, 30100 Murcia, Spain
| | - José Moisés Laparra Llopis
- Molecular Immunonutrition Group, Madrid Institute for Advanced Studies in Food (IMDEA Food), Ctra Cantoblanco 8, 28049 Madrid, Spain
- Correspondence: ; Tel.: +34-(0)-9-1787-8100
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4
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Nakashima F, Suzuki T, Gordon ON, Golding D, Okuno T, Giménez-Bastida JA, Yokomizo T, Schneider C. Biosynthetic Crossover of 5-Lipoxygenase and Cyclooxygenase-2 Yields 5-Hydroxy-PGE 2 and 5-Hydroxy-PGD 2. JACS AU 2021; 1:1380-1388. [PMID: 34604848 PMCID: PMC8479768 DOI: 10.1021/jacsau.1c00177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Indexed: 05/14/2023]
Abstract
The biosynthetic crossover of 5-lipoxygenase (5-LOX) and cyclooxygenase-2 (COX-2) enzymatic activities is a productive pathway to convert arachidonic acid into unique eicosanoids. Here, we show that COX-2 catalysis with 5-LOX derived 5-hydroxy-eicosatetraenoic acid yields the endoperoxide 5-hydroxy-PGH2 that spontaneously rearranges to 5-OH-PGE2 and 5-OH-PGD2, the 5-hydroxy analogs of arachidonic acid derived PGE2 and PGD2. The endoperoxide was identified via its predicted degradation product, 5,12-dihydroxy-heptadecatri-6E,8E,10E-enoic acid, and by SnCl2-mediated reduction to 5-OH-PGF2α. Both 5-OH-PGE2 and 5-OH-PGD2 were unstable and degraded rapidly upon treatment with weak base. This instability hampered detection in biologic samples which was overcome by in situ reduction using NaBH4 to yield the corresponding stable 5-OH-PGF2 diastereomers and enabled detection of 5-OH-PGF2α in activated primary human leukocytes. 5-OH-PGE2 and 5-OH-PGD2 were unable to activate EP and DP prostanoid receptors, suggesting their bioactivity is distinct from PGE2 and PGD2.
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Affiliation(s)
- Fumie Nakashima
- Division
of Clinical Pharmacology, Department of Pharmacology, and Vanderbilt
Institute of Chemical Biology, Vanderbilt
University Medical School, Nashville, Tennessee 37232, United States
| | - Takashi Suzuki
- Division
of Clinical Pharmacology, Department of Pharmacology, and Vanderbilt
Institute of Chemical Biology, Vanderbilt
University Medical School, Nashville, Tennessee 37232, United States
| | - Odaine N. Gordon
- Division
of Clinical Pharmacology, Department of Pharmacology, and Vanderbilt
Institute of Chemical Biology, Vanderbilt
University Medical School, Nashville, Tennessee 37232, United States
| | - Dominic Golding
- Division
of Clinical Pharmacology, Department of Pharmacology, and Vanderbilt
Institute of Chemical Biology, Vanderbilt
University Medical School, Nashville, Tennessee 37232, United States
| | - Toshiaki Okuno
- Department
of Biochemistry, Juntendo University Graduate
School of Medicine, Tokyo 113-8421, Japan
| | - Juan A. Giménez-Bastida
- Division
of Clinical Pharmacology, Department of Pharmacology, and Vanderbilt
Institute of Chemical Biology, Vanderbilt
University Medical School, Nashville, Tennessee 37232, United States
| | - Takehiko Yokomizo
- Department
of Biochemistry, Juntendo University Graduate
School of Medicine, Tokyo 113-8421, Japan
| | - Claus Schneider
- Division
of Clinical Pharmacology, Department of Pharmacology, and Vanderbilt
Institute of Chemical Biology, Vanderbilt
University Medical School, Nashville, Tennessee 37232, United States
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5
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Giménez-Bastida JA, González-Sarrías A, Laparra-Llopis JM, Schneider C, Espín JC. Targeting Mammalian 5-Lipoxygenase by Dietary Phenolics as an Anti-Inflammatory Mechanism: A Systematic Review. Int J Mol Sci 2021; 22:7937. [PMID: 34360703 PMCID: PMC8348464 DOI: 10.3390/ijms22157937] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 12/15/2022] Open
Abstract
5-Lipoxygenase (5-LOX) plays a key role in inflammation through the biosynthesis of leukotrienes and other lipid mediators. Current evidence suggests that dietary (poly)phenols exert a beneficial impact on human health through anti-inflammatory activities. Their mechanisms of action have mostly been associated with the modulation of pro-inflammatory cytokines (TNF-α, IL-1β), prostaglandins (PGE2), and the interaction with NF-κB and cyclooxygenase 2 (COX-2) pathways. Much less is known about the 5-lipoxygenase (5-LOX) pathway as a target of dietary (poly)phenols. This systematic review aimed to summarize how dietary (poly)phenols target the 5-LOX pathway in preclinical and human studies. The number of studies identified is low (5, 24, and 127 human, animal, and cellular studies, respectively) compared to the thousands of studies focusing on the COX-2 pathway. Some (poly)phenolics such as caffeic acid, hydroxytyrosol, resveratrol, curcumin, nordihydroguaiaretic acid (NDGA), and quercetin have been reported to reduce the formation of 5-LOX eicosanoids in vitro. However, the in vivo evidence is inconclusive because of the low number of studies and the difficulty of attributing effects to (poly)phenols. Therefore, increasing the number of studies targeting the 5-LOX pathway would largely expand our knowledge on the anti-inflammatory mechanisms of (poly)phenols.
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Affiliation(s)
- Juan Antonio Giménez-Bastida
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Department Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain;
| | - Antonio González-Sarrías
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Department Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain;
| | - José Moisés Laparra-Llopis
- Group of Molecular Immunonutrition in Cancer, Madrid Institute for Advanced Studies in Food (IMDEA-Food), 28049 Madrid, Spain;
| | - Claus Schneider
- Division of Clinical Pharmacology, Department of Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN 37232, USA;
| | - Juan Carlos Espín
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Department Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain;
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6
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Caffeic Acid Modulates Processes Associated with Intestinal Inflammation. Nutrients 2021; 13:nu13020554. [PMID: 33567596 PMCID: PMC7914463 DOI: 10.3390/nu13020554] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/28/2021] [Accepted: 02/04/2021] [Indexed: 12/14/2022] Open
Abstract
Caffeic acid is one of the most abundant hydroxycinnamic acids in fruits, vegetables, and beverages. This phenolic compound reaches relevant concentrations in the colon (up to 126 µM) where it could come into contact with the intestinal cells and exert its anti-inflammatory effects. The aim of this investigation was to study the capacity of caffeic acid, at plausible concentrations from an in vivo point of view, to modulate mechanisms related to intestinal inflammation. Consequently, we tested the effects of caffeic acid (50–10 µM) on cyclooxygenase (COX)-2 expression and prostaglandin (PG)E2, cytokines, and chemokines (IL-8, monocyte chemoattractant protein-1 -MCP-1-, and IL-6) biosynthesis in IL-1β-treated human myofibroblasts of the colon, CCD-18Co. Furthermore, the capacity of caffeic acid to inhibit the angiotensin-converting enzyme (ACE) activity, to hinder advanced glycation end product (AGE) formation, as well as its antioxidant, reducing, and chelating activity were also investigated. Our results showed that (i) caffeic acid targets COX-2 and its product PGE2 as well as the biosynthesis of IL-8 in the IL-1β-treated cells and (ii) inhibits AGE formation, which could be related to (iii) the high chelating activity exerted. Low anti-ACE, antioxidant, and reducing capacity of caffeic acid was also observed. These effects of caffeic acid expands our knowledge on anti-inflammatory mechanisms against intestinal inflammation.
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7
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Giménez-Bastida JA, González-Sarrías A, Espín JC, Schneider C. Inhibition of 5-Lipoxygenase-Derived Leukotrienes and Hemiketals as a Novel Anti-Inflammatory Mechanism of Urolithins. Mol Nutr Food Res 2020; 64:e2000129. [PMID: 32306507 DOI: 10.1002/mnfr.202000129] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/27/2020] [Indexed: 12/20/2022]
Abstract
SCOPE Urolithins (Uro), gut microbial metabolites derived from ellagic acid (EA), reach significant concentrations in the human colon. Uro-A exerts anti-inflammatory activity in animal models of inflammatory bowel diseases (IBDs). It is hypothesized that Uro can modulate the biosynthesis of leukocyte-derived inflammatory eicosanoids from the 5-lipoxygenase (5-LOX), cyclooxygenase-2 (COX-2), and 5-LOX/COX-2 pathways, relevant in the onset and progression of IBDs, including 5-hydroxyeicosatetraenoic acids (5-HETEs), leukotriene-B4 (LTB4 ), prostaglandin E2 (PGE2 ), and hemiketals (HKE2 and HKD2 ). METHODS AND RESULTS Leukocytes, obtained from six healthy donors, are stimulated with lipopolysaccharide and calcium ionophore A23187. Uro, at concentrations found in the human colon (1-15 µm), decrease eicosanoid biosynthesis and COX-2 levels in the activated leukocytes. In contrast, EA and conjugated Uro (glucuronides and sulfates) are inactive. Uro-A and isourolithin-A reduce the formation of the 5-LOX/COX-2 products HKE2 and HKD2 through the COX-2 pathway (down-regulation of COX-2 and PGE2), whereas Uro-C reduces 5-HETE and LTB4 via inhibition of 5-LOX. CONCLUSIONS The results show that physiologically relevant colonic Uro target eicosanoid biosynthetic pathways. The effect on HKs and LTB4 formation is unprecedented and expands the knowledge on anti-inflammatory mechanisms of Uro against IBDs.
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Affiliation(s)
- Juan Antonio Giménez-Bastida
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA.,Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Dept. Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Murcia, Campus de Espinardo, 30100, Spain
| | - Antonio González-Sarrías
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Dept. Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Murcia, Campus de Espinardo, 30100, Spain
| | - Juan Carlos Espín
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Dept. Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Murcia, Campus de Espinardo, 30100, Spain
| | - Claus Schneider
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA
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Boer RE, Giménez-Bastida JA, Boutaud O, Jana S, Schneider C, Sulikowski GA. Total Synthesis and Biological Activity of the Arachidonic Acid Metabolite Hemiketal E 2. Org Lett 2018; 20:4020-4022. [PMID: 29916257 DOI: 10.1021/acs.orglett.8b01578] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The total synthesis of hemiketal E2 (HKE2) has been accomplished using a gold(I)-mediated cycloisomerization followed by oxidation of the enol ether product to introduce a unique keto-hemiketal, the core structure of HKE2. Synthetic hemiketal E2 reproduced biosynthetically derived HKE2 in the inhibition of human platelet aggregation.
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Affiliation(s)
- Robert E Boer
- Department of Chemistry , Vanderbilt University, Vanderbilt Institute of Chemical Biology Nashville , Tennessee 37232 , United States
| | - Juan Antonio Giménez-Bastida
- Department of Pharmacology , Vanderbilt University, Vanderbilt Institute of Chemical Biology Nashville , Tennessee 37232 , United States
| | - Olivier Boutaud
- Department of Pharmacology , Vanderbilt University, Vanderbilt Institute of Chemical Biology Nashville , Tennessee 37232 , United States
| | - Somnath Jana
- Department of Chemistry , Vanderbilt University, Vanderbilt Institute of Chemical Biology Nashville , Tennessee 37232 , United States
| | - Claus Schneider
- Department of Pharmacology , Vanderbilt University, Vanderbilt Institute of Chemical Biology Nashville , Tennessee 37232 , United States
| | - Gary A Sulikowski
- Department of Chemistry , Vanderbilt University, Vanderbilt Institute of Chemical Biology Nashville , Tennessee 37232 , United States.,Department of Pharmacology , Vanderbilt University, Vanderbilt Institute of Chemical Biology Nashville , Tennessee 37232 , United States
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9
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Giménez-Bastida JA, Shibata T, Uchida K, Schneider C. Roles of 5-lipoxygenase and cyclooxygenase-2 in the biosynthesis of hemiketals E 2 and D 2 by activated human leukocytes. FASEB J 2017; 31:1867-1878. [PMID: 28096231 DOI: 10.1096/fj.201601136r] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 01/03/2017] [Indexed: 11/11/2022]
Abstract
The 2 hemiketal (HK) eicosanoids HKD2 and HKE2 are the major products of the biosynthetic crossover of the 5-lipoxygenase (5-LOX) and cyclooxygenase-2 (COX-2) pathways. HKs result from the rearrangement of a di-endoperoxide intermediate formed in the COX-2-dependent oxygenation of 5S-hydroxyeicosatetraenoic acid (5S-HETE). We analyzed HK biosynthesis in human leukocytes stimulated ex vivo and defined the biosynthetic roles of 5-LOX and COX-2, using inhibitors and incubations with exogenous substrates. Activation of leukocytes with LPS followed by treatment with the calcium ionophore A23187 resulted in the formation of PGE2, 5-HETE, and LTB4 as the principal metabolites of COX-2 and 5-LOX, respectively. The formation of HKD2 and HKE2 was highest after 15 min LPS treatment, and at that time, levels were similar to PGE2, but less than 5-HETE and LTB4 The time course of HK formation paralleled that of 5-HETE and LTB4, implying the availability of the 5S-HETE substrate as a limiting factor in biosynthesis rather than expression levels of COX-2. Specific inhibitors of COX-2 and 5-LOX decreased formation of HKD2 and HKE2 Platelets did not form HKs from exogenous 5S-HETE, implying that COX-1 is not involved. HKs are early products during an inflammatory event and require cells that express 5-LOX and COX-2 for their biosynthesis.-Giménez-Bastida, J. A., Shibata, T., Uchida, K., Schneider, C. Roles of 5-lipoxygenase and cyclooxygenase-2 in the biosynthesis of hemiketals E2 and D2 by activated human leukocytes.
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Affiliation(s)
- Juan A Giménez-Bastida
- Department of Pharmacology, Vanderbilt University Medical School, Nashville, Tennessee, USA.,Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, Tennessee, USA
| | - Takahiro Shibata
- Division of Biofunctional Chemistry, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan; and
| | - Koji Uchida
- Division of Biofunctional Chemistry, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan; and.,Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Claus Schneider
- Department of Pharmacology, Vanderbilt University Medical School, Nashville, Tennessee, USA; .,Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, Tennessee, USA
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10
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Yarla NS, Bishayee A, Sethi G, Reddanna P, Kalle AM, Dhananjaya BL, Dowluru KSVGK, Chintala R, Duddukuri GR. Targeting arachidonic acid pathway by natural products for cancer prevention and therapy. Semin Cancer Biol 2016; 40-41:48-81. [PMID: 26853158 DOI: 10.1016/j.semcancer.2016.02.001] [Citation(s) in RCA: 229] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/23/2016] [Accepted: 02/01/2016] [Indexed: 12/16/2022]
Abstract
Arachidonic acid (AA) pathway, a metabolic process, plays a key role in carcinogenesis. Hence, AA pathway metabolic enzymes phospholipase A2s (PLA2s), cyclooxygenases (COXs) and lipoxygenases (LOXs) and their metabolic products, such as prostaglandins and leukotrienes, have been considered novel preventive and therapeutic targets in cancer. Bioactive natural products are a good source for development of novel cancer preventive and therapeutic drugs, which have been widely used in clinical practice due to their safety profiles. AA pathway inhibitory natural products have been developed as chemopreventive and therapeutic agents against several cancers. Curcumin, resveratrol, apigenin, anthocyans, berberine, ellagic acid, eugenol, fisetin, ursolic acid, [6]-gingerol, guggulsteone, lycopene and genistein are well known cancer chemopreventive agents which act by targeting multiple pathways, including COX-2. Nordihydroguaiaretic acid and baicalein can be chemopreventive molecules against various cancers by inhibiting LOXs. Several PLA2s inhibitory natural products have been identified with chemopreventive and therapeutic potentials against various cancers. In this review, we critically discuss the possible utility of natural products as preventive and therapeutic agents against various oncologic diseases, including prostate, pancreatic, lung, skin, gastric, oral, blood, head and neck, colorectal, liver, cervical and breast cancers, by targeting AA pathway. Further, the current status of clinical studies evaluating AA pathway inhibitory natural products in cancer is reviewed. In addition, various emerging issues, including bioavailability, toxicity and explorability of combination therapy, for the development of AA pathway inhibitory natural products as chemopreventive and therapeutic agents against human malignancy are also discussed.
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Affiliation(s)
- Nagendra Sastry Yarla
- Department of Biochemisty/Bionformatics, Institute of Science, GITAM University, Rushikonda, Visakhapatnam 530 045, Adhra Pradesh, India
| | - Anupam Bishayee
- Department of Pharmaceutical Sciences, College of Pharmacy, Larkin Health Sciences Institute, 18301 N. Miami Avenue, Miami, FL 33169, USA.
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore; School of Biomedical Sciences, Curtin Health Innovation Research Institute, Biosciences Research Precinct, Curtin University, Western Australia 6009, Australia
| | - Pallu Reddanna
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telagana, India
| | - Arunasree M Kalle
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Gachibowli, Hyderabad 500 046, Telagana, India; Department of Environmental Health Sciences, Laboratory of Human Environmental Epigenomes, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Bhadrapura Lakkappa Dhananjaya
- Toxinology/Toxicology and Drug Discovery Unit, Center for Emerging Technologies, Jain Global Campus, Jain University, Kanakapura Taluk, Ramanagara 562 112, Karnataka, India
| | - Kaladhar S V G K Dowluru
- Department of Biochemisty/Bionformatics, Institute of Science, GITAM University, Rushikonda, Visakhapatnam 530 045, Adhra Pradesh, India; Department of Microbiology and Bioinformatics, Bilaspur University, Bilaspur 495 001, Chhattisgarh, India
| | - Ramakrishna Chintala
- Department of Environmental Sciences, Institute of Science, GITAM University, Rushikonda, Visakhapatnam 530 045, Adhra Pradesh, India
| | - Govinda Rao Duddukuri
- Department of Biochemisty/Bionformatics, Institute of Science, GITAM University, Rushikonda, Visakhapatnam 530 045, Adhra Pradesh, India.
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11
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Giménez-Bastida JA, Suzuki T, Sprinkel KC, Boeglin WE, Schneider C. Biomimetic synthesis of hemiketal eicosanoids for biological testing. Prostaglandins Other Lipid Mediat 2016; 132:41-46. [PMID: 27596332 DOI: 10.1016/j.prostaglandins.2016.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 08/31/2016] [Accepted: 09/01/2016] [Indexed: 02/07/2023]
Abstract
The hemiketal (HK) eicosanoids HKE2 and HKD2 are the major products resulting from the biosynthetic cross-over of the 5-lipoxygenase and cyclooxygenase-2 pathways. They are formed by activated human leukocytes ex vivo, and, therefore, may be involved in regulation of the inflammatory response as autocrine or paracrine mediators. HKE2 and HKD2 are not commercially available and, so far, no method for their total chemical synthesis has been reported. The limited availability has impeded the characterization of their biological effects. Here, we describe a method for biomimetic preparation of HKE2 and HKD2 by reaction of recombinant human cyclooxygenase-2 with chemically synthesized 5S-HETE. We found that HKE2 did not induce or inhibit the release of TNFα and IL-1β by human THP-1 monocytes and phorbol ester treatment-derived macrophages.
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Affiliation(s)
- Juan A Giménez-Bastida
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN 37232, U.S.A, USA
| | - Takashi Suzuki
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN 37232, U.S.A, USA
| | - Katie C Sprinkel
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN 37232, U.S.A, USA
| | - William E Boeglin
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN 37232, U.S.A, USA
| | - Claus Schneider
- Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN 37232, U.S.A, USA.
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Hsu CC, Wang CH, Wu LC, Hsia CY, Chi CW, Yin PH, Chang CJ, Sung MT, Wei YH, Lu SH, Lee HC. Mitochondrial dysfunction represses HIF-1α protein synthesis through AMPK activation in human hepatoma HepG2 cells. Biochim Biophys Acta Gen Subj 2013; 1830:4743-51. [PMID: 23791554 DOI: 10.1016/j.bbagen.2013.06.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 05/09/2013] [Accepted: 06/04/2013] [Indexed: 01/11/2023]
Abstract
BACKGROUND Hypoxia-inducible factor-1α (HIF-1α) is an important transcription factor that modulates cellular responses to hypoxia and also plays critical roles in cancer progression. Recently, somatic mutations and decreased copy number of mitochondrial DNA (mtDNA) were detected in hepatocellular carcinoma (HCC). These mutations were shown to have the potential to cause mitochondrial dysfunction. However, the effects and mechanisms of mitochondrial dysfunction on HIF-1α function are not fully understood. This study aims to explore the underlying mechanism by which mitochondrial dysfunction regulates HIF-1α expression. METHODS Human hepatoma HepG2 cells were treated with various mitochondrial respiration inhibitors and an uncoupler, respectively, and the mRNA and protein expressions as well as transactivation activity of HIF-1α were determined. The role of AMP-activated protein kinase (AMPK) was further analyzed by compound C and AMPK knock-down. RESULTS Treatments of mitochondrial inhibitors and an uncoupler respectively reduced both the protein level and transactivation activity of HIF-1α in HepG2 cells under normoxia or hypoxia. The mitochondrial dysfunction-repressed HIF-1α protein synthesis was associated with decreased phosphorylations of p70(S6K) and 4E-BP-1. Moreover, mitochondrial dysfunction decreased intracellular ATP content and elevated the phosphorylation of AMPK. Treatments with compound C, an AMPK inhibitor, and knock-down of AMPK partially rescued the mitochondrial dysfunction-repressed HIF-1α expression. CONCLUSIONS Mitochondrial dysfunctions resulted in reduced HIF-1α protein synthesis through AMPK-dependent manner in HepG2 cells. GENERAL SIGNIFICANCE Our results provided a mechanism for communication from mitochondria to the nucleus through AMPK-HIF-1α. Mitochondrial function is important for HIF-1α expression in cancer progression.
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Affiliation(s)
- Chia-Chi Hsu
- Department and Institute of Pharmacology, National Yang-Ming University, Taiwan
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Navab M, Reddy ST, Van Lenten BJ, Buga GM, Hough G, Wagner AC, Fogelman AM. High-density lipoprotein and 4F peptide reduce systemic inflammation by modulating intestinal oxidized lipid metabolism: novel hypotheses and review of literature. Arterioscler Thromb Vasc Biol 2012; 32:2553-60. [PMID: 23077141 DOI: 10.1161/atvbaha.112.300282] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Oxidized phospholipids are found in the vasculature of animal models of atherosclerosis, in human atherosclerotic lesions, and in other inflammatory diseases. Oxidized phospholipids cause vascular and nonvascular cells to initiate an inflammatory reaction. Metabolites of arachidonic acid, such as 12-hydroxyeicosatetraenoic acid, can mimic some of the inflammatory properties of oxidized phospholipids. In vitro and in vivo normal high-density lipoprotein (HDL), normal apolipoprotein A-I, and apolipoprotein A-I mimetic peptides, each likely acting in a different manner, prevent the inflammatory reaction characteristic of atherosclerosis, and this is associated with decreased levels of oxidized lipids in tissues and cells. HDL from animal models of atherosclerosis or from humans with atherosclerosis or from humans or animals with other chronic inflammatory diseases does not prevent the inflammatory reaction characteristic of atherosclerosis and may even enhance the inflammatory reaction. In mice and perhaps humans, ≈30% of the steady-state plasma HDL-cholesterol pool is derived from the small intestine. The metabolism of phospholipids by gut bacteria has been recently implicated in atherosclerosis in both mice and humans. Studies with apolipoprotein A-I mimetic peptides suggest that the small intestine is a major tissue regulating systemic inflammation in mouse models of atherosclerosis and may be important for determining the functionality of HDL.
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Affiliation(s)
- Mohamad Navab
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine at UCLA, 10833 Le Conte Ave, Room A2-237 CHS, Los Angeles, CA 90095-1679, USA.
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Yin H, Zhou Y, Zhu M, Hou S, Li Z, Zhong H, Lu J, Meng T, Wang J, Xia L, Xu Y, Wu Y. Role of mitochondria in programmed cell death mediated by arachidonic acid-derived eicosanoids. Mitochondrion 2012; 13:209-24. [PMID: 23063711 DOI: 10.1016/j.mito.2012.10.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 09/24/2012] [Accepted: 10/02/2012] [Indexed: 01/28/2023]
Abstract
Arachidonic acid-derived eicosanoids from cyclooxygenases, lipoxygenases, and cytochrome P450 are important lipid mediators involved in numerous homeostatic and pathophysiological processes. Most eicosanoids act primarily on their respective cell surface G-protein coupled receptors to elicit downstream signaling in an autocrine and paracrine fashion. Emerging evidence indicates that these hormones are also critical in apoptosis in a cell/tissue specific manner. In this review, we summarize the formation of eicosanoids and their roles as mediators in apoptosis, specifically on the roles of mitochondria in mediating these events and the signaling pathways involved. The biological relevance of eicosanoid-mediated apoptosis is also discussed.
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Affiliation(s)
- Huiyong Yin
- Laboratory of Lipid Metabolism in Human Nutrition and Related Diseases, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
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Abstract
Cancer initiation and progression are multistep events that require cell proliferation, migration, extravasation to the blood or lymphatic vessels, arrest to the metastatic site, and ultimately secondary growth. Tumor cell functions at both primary or secondary sites are controlled by many different factors, including growth factors and their receptors, chemokines, nuclear receptors, cell-cell interactions, cell-matrix interactions, as well as oxygenated metabolites of arachidonic acid. The observation that cyclooxygenases and lipoxygenases and their arachidonic acid-derived eicosanoid products (prostanoids and HETEs) are expressed and produced by tumor cells, together with the finding that these enzymes can regulate cell growth, survival, migration, and invasion, has prompted investigators to analyze the roles of these enzymes in cancer progression. In this review, we focus on the contribution of cyclooxygenase- and lipoxygenase-derived eicosanoids to tumor cell function in vitro and in vivo and discuss hope and tribulations of targeting these enzymes for cancer prevention and treatment.
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Affiliation(s)
- Claus Schneider
- Department of Pharmacology, Vanderbilt University Medical School, Nashville, TN 37232, USA
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Tejera N, Boeglin WE, Suzuki T, Schneider C. COX-2-dependent and -independent biosynthesis of dihydroxy-arachidonic acids in activated human leukocytes. J Lipid Res 2011; 53:87-94. [PMID: 22068350 DOI: 10.1194/jlr.m017822] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Biosynthesis of 5,15-dihydroxyeicosatetraenoic acid (5,15-diHETE) in leukocytes involves consecutive oxygenation of arachidonic acid by 5-lipoxygenase (LOX) and 15-LOX in either order. Here, we analyzed the contribution of cyclooxygenase (COX)-2 to the biosynthesis of 5,15-diHETE and 5,11-diHETE in isolated human leukocytes activated with lipopolysaccharide and calcium ionophore A23187. Transformation of arachidonic acid was initiated by 5-LOX providing 5S-HETE as a substrate for COX-2 forming 5S,15S-diHETE, 5S,15R-diHETE, and 5S,11R-diHETE as shown by LC/MS and chiral phase HPLC analyses. The levels of 5,15-diHETE were 0.45 ± 0.2 ng/10⁶ cells (mean ± SEM, n = 6), reaching about half the level of LTB₄ (1.3 ± 0.5 ng/10⁶ cells, n = 6). The COX-2 specific inhibitor NS-398 reduced the levels of 5,15-diHETE to below 0.02 ng/10⁶ cells in four of six samples. Similar reduction was achieved by MK-886, an inhibitor of 5-LOX activating protein but the above differences were not statistically significant. Aspirin treatment of the activated cells allowed formation of 5,15-diHETE (0.1 ± 0.05 ng/10⁶ cells, n = 6) but, as expected, abolished formation of 5,11-diHETE. The mixture of activated cells also produced 5S,12S-diHETE with the unusual 6E,8Z,10E double bond configuration, implicating biosynthesis by 5-LOX and 12-LOX activity rather than by hydrolysis of the leukotriene A₄-epoxide. Exogenous octadeuterated 5S-HETE and 15S-HETE were converted to 5,15-diHETE, implicating that multiple oxygenation pathways of arachidonic acid occur in activated leukocytes. The contribution of COX-2 to the biosynthesis of dihydroxylated derivatives of arachidonic acid provides evidence for functional coupling with 5-LOX in activated human leukocytes.
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Affiliation(s)
- Noemi Tejera
- Division of Clinical Pharmacology, Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, USA
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