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Bouissane L, Khouili M, Coudert G, Pujol MD, Guillaumet G. New and promising type of leukotriene B4 (LTB4) antagonists based on the 1,4-benzodioxine structure. Eur J Med Chem 2023; 254:115332. [PMID: 37043995 DOI: 10.1016/j.ejmech.2023.115332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/08/2023]
Abstract
New leukotriene B4 (LTB4) antagonists have been synthesized that can be considered as potential anti-inflammatory drugs. Structures containing the dioxygenated nucleus of 1,4-benzodioxine constitute a potential group of leukotriene B4 (LTB4) antagonists. The objective of this study was to access efficient and selective LTB4 antagonists as a way to elucidate the role of LTB4 in inflammatory processes and therefore allow the development of new types of structures based on 1,4-benzodioxine. Forty-one new 1,4-benzodioxine molecules substituted at different positions of the heterocyclic nucleus were synthesized to determine the minimum structural requirements by studying structure-activity relationships. Eighteen of them were tested in vitro and in vivo for their anti-inflammatory activity related to the antagonist character of LTB4. Pharmacological tests have shown satisfactory in vitro activity for compounds 24b, 24c and 24e with IC50's of 288, 439, 477 nM respectively. The results of the in vivo tests, carried out with the compound that presented greater activity in the in vitro tests 24b, have shown significant anti-inflammatory properties.
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Hamri S, Jouha J, Oumessaoud A, Pujol M, Khouili M, Guillaumet G. Convenient approach for the synthesis of ONO-LB-457, a potent leukotriene B4 receptor antagonist. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Structural Analysis of Leukotriene B4 (LBT4) Receptor (BLT1 AND BLT2) Antagonists. Pharm Chem J 2014. [DOI: 10.1007/s11094-014-1102-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Adrian TE, Hennig R, Friess H, Ding X. The Role of PPARgamma Receptors and Leukotriene B(4) Receptors in Mediating the Effects of LY293111 in Pancreatic Cancer. PPAR Res 2009; 2008:827096. [PMID: 19190780 PMCID: PMC2631651 DOI: 10.1155/2008/827096] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Accepted: 10/22/2008] [Indexed: 11/25/2022] Open
Abstract
Pancreatic cancer is a devastating disease in which current therapies are inadequate. Separate lines of research have identified the 5-lipoxygenase/leukotriene B(4) receptor pathway and the PPARgamma pathway as potential targets for prevention or treatment of this disease. LY293111 was originally designed as a potent leukotriene B(4) receptor antagonist for treatment of inflammatory conditions. LY293111 was also known to have inhibitory effects on 5-lipoxygenase, which is upstream of the production of leukotrienes. LY293111 was shown to have potent anticancer effects in pancreatic cancer and several other solid malignancies, where it caused cell cycle arrest and marked apoptosis. Subsequently, it came to light that LY293111 exhibited PPARgamma agonist activity in addition to its effects on the 5-lipoxygenase pathway. This raises the question of which of the two targets is of greatest importance with regard to the anticancer effects of this agent. The evidence to date is not conclusive, but suggests that the effects of LY293111 may be mediated by both LTB(4) receptors and PPARgamma.
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Affiliation(s)
- Thomas E. Adrian
- Department of Physiology, Faculty of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611-3008, USA
| | - Rene Hennig
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611-3008, USA
- Department of Surgery, Technische Universitaet Muenchen, 81675 Munich, Germany
| | - Helmut Friess
- Department of Surgery, Technische Universitaet Muenchen, 81675 Munich, Germany
| | - Xianzhong Ding
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611-3008, USA
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Fretland DJ, Penning TD. Overview Pulmonary-Allergy, Dermatological, Gastrointestinal & Arthritis Recent advances in leukotriene B4 receptor antagonist research. Expert Opin Ther Pat 2008. [DOI: 10.1517/13543776.6.1.21] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ando K, Tsuji E, Ando Y, Kunitomo JI, Kobayashi R, Yokomizo T, Shimizu T, Yamashita M, Ohta S, Nabe T, Kohno S, Ohishi Y. Synthesis of 2-, 4- and 5-(2-alkylcarbamoyl-1-methylvinyl)-7-alkyloxybenzo[b]furans and their leukotriene B4 receptor antagonistic activity. Org Biomol Chem 2005; 3:2129-39. [PMID: 15917901 DOI: 10.1039/b503615a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Variable benzo[b]furan derivatives having (E)- and (Z)-2-alkylcarbamoyl-1-methylvinyl groups at the 2-, 4- and 5-positions and a carboxylpropoxy or (1-phenyl)ethoxy group at the 7-position were prepared to find novel and selective leukotriene B4(LTB4) receptor antagonists. (E)-2-(2-diethylcarbamoyl-1-methylvinyl)-7-(1-phenylethoxy)benzo[b]furan (4v) showed selective inhibition to the human BLT2 receptor (hBLT2). On the other hand, (E)-2-acetyl-4-(2-diethylcarbamoyl-1-methylvinyl)-7-(1-phenylethoxy)benzo[b]furan (7v) inhibited both human BLT(1) receptor (hBLT1) and hBLT2. The (E)-2-(2-diethylcarbamoyl-1-methylvinyl) group lay on approximately the same plane as the benzo[b]furan ring, whereas the (E)-4-(2-diethylcarbamoyl-1-methylvinyl) group had the torsion angle (45.7 degree) from the benzo[b]furan ring plane. However, the (Z)-(2-alkylcarbamoyl-1-methylvinyl)benzo[b]furans were inactive. The inhibitory activity depended on the conformation of the 2-diethylcarbamoyl-1-methylvinyl group.
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Affiliation(s)
- Kumiko Ando
- School of Pharmaceutical Sciences, Mukogawa Women's University, 11-68 Koshien Kyuban-cho, Nishinomiya 663-8179, Japan
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Shibata K, Yoshino H, Mizuno N, Shinohara H, Morita K, Kitayama S, Kurihara H, Dohi T. Mediation by platelet-activating factor of 12-hydroxyeicosatetraenoic acid-induced cytosolic free calcium concentration elevation in neutrophils. Prostaglandins Other Lipid Mediat 2000; 62:385-94. [PMID: 11060901 DOI: 10.1016/s0090-6980(00)00090-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
12(R)-hydroxyeicosatetraenoic acid (HETE) shows biphasic increase in cytosolic free calcium concentration ([Ca2+]i) in rabbit and human neutrophils; the initial transient phase and the continuous falling phase. 12(S)-HETE was less potent in both species. BN50739, a platelet-activating factor (PAF) receptor antagonist, inhibited both phases of 12(R)-HETE-induced [Ca2+]i rise but did not affect leukotriene B4 (LTB4)-induced [Ca2+]i rise. N-tosyl-L-phenylalanine chloromethyl ketone (TPCK), a PAF synthesis inhibitor, and manoalide, a phospholipase A2 inhibitor, reduced 12(R)-HETE-induced [Ca2+]i rise. These blockers inhibited the continuous phase of [Ca2+]i rise induced by N-formyl-methionyl-leucyl-phenylalanine (FMLP) with little effect on the initial phase. It had no significant effect on LTB4-induced [Ca2+]i rise. SC-41930, a LTB4-receptor antagonist, did not block 12-HETE-induced [Ca2+]i rise. In 12(R)-HETE-, FMLP- and LTB4-stimulated cells, accumulations of cell-associated PAF and released PAF were detected but not in unstimulated cells. BN50739 did not affect the accumulation of cell-associated PAF and release of PAF in 12(R)-HETE-stimulated cells. These results suggest that 12(R)-HETE-induced and partially, FMLP-induced, but not LTB4-induced [Ca2+]i rise are mediated by PAF, which is produced and released by stimulation of the cells by 12(R)-HETE and FMLP, respectively.
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Affiliation(s)
- K Shibata
- Department of Periodontology and Endodontology, Hiroshima University Faculty of Dentistry, Japan
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Steele VE, Holmes CA, Hawk ET, Kopelovich L, Lubet RA, Crowell JA, Sigman CC, Kelloff GJ. Potential use of lipoxygenase inhibitors for cancer chemoprevention. Expert Opin Investig Drugs 2000; 9:2121-38. [PMID: 11060797 DOI: 10.1517/13543784.9.9.2121] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Increasing evidence suggests that lipoxygenase (LO)-catalysed metabolites have a profound influence on the development and progression of human cancers. Compared with normal tissues, significantly elevated levels of LO products have been found in breast tumours, colon cancers, lung, skin and prostate cancers, as well as in cells from patients with both acute and chronic leukaemias. LO-mediated products elicit diverse biological activities needed for neoplastic cell growth, influencing growth factor and transcription factor activation, oncogene induction, stimulation of tumour cell adhesion and regulation of apoptotic cell death. Agents that block LO catalytic activity may be effective in preventing cancer by interfering with signalling events needed for tumour growth. In the past ten years, pharmaceuticals agents that specifically inhibit the 5-LO metabolic pathway have been developed to treat inflammatory diseases such as asthma, arthritis and psoriasis. Some of these compounds possess anti-oxidant properties and may be effective in preventing cancer by blocking free radical-induced genetic damage or by preventing the metabolic activation of carcinogens. Other compounds may work by negatively modulating DNA synthesis. Pharmacological profiles of potential chemopreventive agents are compiled from enzyme assays, in vitro testing (e.g., cell proliferation inhibition in human cancer cells) and in vivo animal carcinogenesis models (e.g., N-methyl-N-nitrosourea-induced rat mammary cancer, benzo(a)pyrene-induced lung tumours in strain A/J mice and hormone-induced prostate tumours in rats). In this way, compounds are identified for chemoprevention trials in human subjects. Based on currently available data, it is expected that the prevention of lung and prostate cancer will be initially studied in human trials of LO inhibitors.
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Affiliation(s)
- V E Steele
- Chemopreventive Agent Development Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland 20892, USA.
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Suh H, Jeong SJ, Han YN, Lee HJ, Ryu JH. 3-Amino-1,2-benzisoxazoles: A new family of potent inhibitors of LTB4 binding to the human neutrophils. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)00025-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Poudrel J, Hullot P, Vidal J, Girard J, Rossi J, Muller A, Bonne C. Synthesis and pharmacological profile of new 1,3-disubstituted cyclohexanes as leukotriene B4 receptor antagonists. Bioorg Med Chem Lett 1996. [DOI: 10.1016/0960-894x(96)00424-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Brooks CD, Summers JB. Modulators of leukotriene biosynthesis and receptor activation. J Med Chem 1996; 39:2629-54. [PMID: 8709092 DOI: 10.1021/jm960088k] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- C D Brooks
- Abbott Laboratories, Abbott Park, Illinois 60064-3500, USA
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Sutbeyaz Y, Yakan B, Ozdemir H, Karasen M, Doner F, Kufrevioglu I. Effect of SC-41930, a potent selective leukotriene B4 receptor antagonist, in the guinea pig model of middle ear inflammation. Ann Otol Rhinol Laryngol 1996; 105:476-80. [PMID: 8638901 DOI: 10.1177/000348949610500611] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Arachidonic acid metabolites such as prostaglandins and leukotrienes have been shown to play an important role in the pathogenesis of otitis media (OM). Among these mediators, leukotriene B4 (LTB4) is one of the most potent inducers of inflammatory processes. SC-41930 has been shown to be a specific LTB4 receptor antagonist both in vitro and in vivo. In this study, anti-inflammatory effects of SC-41930 were investigated in a guinea pig model of OM induced by middle ear (ME) inoculation of killed Staphylococcus aureus. Outcome of treatment was determined by measurement of myeloperoxidase activity in the samples of ME mucosa, evaluation of temporal bone histopathology, and presence of ME fluids. Myeloperoxidase activity in the SC-41930-treated group was found to be significantly lower than that in the control group. Histopathology of temporal bones indicated decreased inflammation in the treated group as compared to the controls. In addition, ME fluids were absent in four out of six treated animals. These results demonstrate that SC-41930 can produce significant anti-inflammatory effects in this model of OM.
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Affiliation(s)
- Y Sutbeyaz
- Department of Otolaryngology, School of Medicine, Ataturk University, Erzurum, Turkey
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Silbaugh SA, Stengel PW, Cockerham SL, Froelich LL, Bendele AM, Rippy MK, Baker SR, Sofia MJ, Jackson WT. Aerosolized LTB4 produces delayed onset increases in pulmonary gas trapping. Prostaglandins Leukot Essent Fatty Acids 1996; 54:115-21. [PMID: 8848430 DOI: 10.1016/s0952-3278(96)90068-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Airway obstruction, as measured by increases in postmortem pulmonary gas trapping, and lung inflammatory changes were examined in guinea pigs exposed for up to 4 h to aerosols of leukotriene B4 (LTB4) or its non-chemotactic isomer, 6-trans-12-epi-LTB4. Airway obstruction and cytological responses in isomer-exposed animals were similar to those of unexposed control animals. LTB4-exposed animals had minimal inflammatory changes at 0.5 h but became dyspneic by 2 h and had increased airway obstruction, bronchoalveolar lavage neutrophils and eosinophils, and pulmonary tissue granulocyte scores. The LTB4-induced effects at 4 h were similar to those 2 h, except for further increase in BAL neutrophils and eosinophils. LTB4-induced airway obstructive and inflammatory changes were prevented by pretreatment with the LTB4 receptor antagonist SC-41930, but were unaffected by indomethacin. Thus, prolonged LTB4 inhalation can produce delayed onset airway obstruction that is stereospecific, cyclooxygenase-independent, and temporally associated with the influx of granulocytes into lung airways.
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Affiliation(s)
- S A Silbaugh
- Lilly Research Laboratories, Ell Lilly and Company, Indianapolis, IN 46285, USA
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Jackson WT, Fleisch JH. Development of novel anti-inflammatory agents: a pharmacologic perspective on leukotrienes and their receptors. PROGRESS IN DRUG RESEARCH. FORTSCHRITTE DER ARZNEIMITTELFORSCHUNG. PROGRES DES RECHERCHES PHARMACEUTIQUES 1996; 46:115-68. [PMID: 8754204 DOI: 10.1007/978-3-0348-8996-4_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- W T Jackson
- Lilly Research Laboratories, Eli Lilly & Company, Indianapolis, Indiana, USA
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15
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Lévai A, Patonay T. Synthesis of bridged isoflavone derivatives. MONATSHEFTE FUR CHEMIE 1995. [DOI: 10.1007/bf00812250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Cohen N, Bizzarro FT, May WP, Toth K, Lee FK, Heslin PH, Holland GW, Kwoh SC, Franco LS, Simko BA, Yagaloff KA. Benzenepropanoic acids containing chromanone or naphthalenone moieties are potent and orally active leukotriene B4 antagonists. Bioorg Med Chem Lett 1994. [DOI: 10.1016/s0960-894x(01)80833-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
Leukotrienes are products of arachidonic acid metabolism derived through the action of the 5-lipoxygenase enzyme pathway. Leukotriene B4 has been implicated as a mediator of inflammation through induction of leukocyte and lymphocyte activation. The cysteinyl leukotrienes are important mediators of immediate hypersensitivity reactions and initiate smooth muscle contraction. Regulation of the production of leukotrienes can be achieved either through the action of direct 5-lipoxygenase inhibitors or indirect leukotriene biosynthesis inhibitors which bind to 5-lipoxygenase activating protein. Leukotriene C4 synthase and leukotriene A4 hydrolase represent alternative enzymic targets within the biosynthetic cascade. Leukotriene receptor antagonists also have important therapeutic possibilities and in particular, leukotriene D4 receptor antagonists have shown utility in the treatment of human bronchial asthma.
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Trevethick MA, Clayton NM, Bahl AK, Strong P, Harman IW. Leukotrienes do not contribute to the pathogenesis of indomethacin-induced ulceration of the gastric antrum in the re-fed rat. AGENTS AND ACTIONS 1994; 41:179-83. [PMID: 7942326 DOI: 10.1007/bf02001913] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The potential involvement of leukotrienes in the pathogenesis of indomethacin-induced ulceration of the rat gastric antrum has been studied. Pretreatment with the leukotriene biosynthesis inhibitor, MK886 (30 mg/kg p.o.), inhibited the increases in blood and antral leukotriene B4 release ex vivo associated with the evolution of antral ulceration. Despite this, however, there was no significant reduction in either the area of antral ulceration, or in the associated blood neutrophilia and neutrophil infiltration into the gastric antrum. Similarly, pretreatment with the leukotriene B4 antagonist, SC41930 (50 mg/kg p.o.) or the peptidyl leukotriene antagonist ICI198,615 (50 mg/kg p.o.) did not inhibit the area of antral ulceration induced by indomethacin. Thus, in contrast to published reports studying fundic ulceration, our results suggest that leukotrienes do not play a major role either in the pathogenesis of indomethacin-induced ulceration of the rat gastric antrum or neutrophil infiltration into the damaged antrum.
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Affiliation(s)
- M A Trevethick
- Department of Gastrointestinal Pharmacology, Glaxo Group Research Ltd, Ware, Herts, UK
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Synthesis and pharmacological activity of SC-53228, a leukotriene B4 receptor antagonist with high intrinsic potency and selectivity. Bioorg Med Chem Lett 1994. [DOI: 10.1016/s0960-894x(01)80853-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Soyombo O, Spur BW, Soh C, Lee TH. Structure/activity relationship of leukotriene B4 and its structural analogues in chemotactic, lysosomal-enzyme release and receptor-binding assays. EUROPEAN JOURNAL OF BIOCHEMISTRY 1993; 218:59-66. [PMID: 8243477 DOI: 10.1111/j.1432-1033.1993.tb18351.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The biological activities of chemically synthesized leukotriene B4 and eight structural analogues have been studied using chemotaxis, lysosomal-enzyme release and receptor-binding assays on human neutrophils. The results show that increasing the number of double bonds between C14 and C20, having triple bonds at C6 or C14, substitution of the primary carboxyl group at C1, changing the geometry of the double bond at C6 from the cis to trans configuration and changing the chirality of the hydroxyl group at C12 from the R to the S configuration result in substantial loss of both biological activity and the capacity to bind to the LTB4 recognition site in parallel. We suggest that the functional epitopes of 5S,12R-dihydroxy-6,14-cis-8,10-trans-icosatetraenoic acid (LTB4) are either the same, or reside in the same domain as the binding site for the LTB4 receptor. Development of LTB4 antagonists to the high-affinity LTB4 receptor, based on the structure of LTB4, is unlikely to be successful.
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Affiliation(s)
- O Soyombo
- Department of Allergy & Allied Respiratory Disorders, United Medical School, Guy's Hospital, London, England
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Scott Sawyer J, Baldwin RF, Saussy DL, Froelich LL, Jackson WT. Diaryl ether/carboxylic acid derivatives of LY255283: Receptor antagonists of leukotriene B4. Bioorg Med Chem Lett 1993. [DOI: 10.1016/s0960-894x(01)81000-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Sofia MJ, Floreancig P, Jackson WT, Marder P, Saussy DL, Silbaugh SA, Cockerham SL, Froelich LL, Roman CR, Stengel PW, Fleisch JH. Acid unit modifications of 1,2,4,5-substituted hydroxyacetophenones and the effect on in vitro and in vivo LTB4 receptor antagonism. Bioorg Med Chem Lett 1993. [DOI: 10.1016/s0960-894x(00)80304-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Penning TD, Djuric SW, Docter SH, Yu SS, Spangler D, Anglin CP, Fretland DJ, Kachur JF, Keith RH, Tsai BS. The design and synthesis of second generation leukotriene B4 (LTB4) receptor antagonists related to SC-41930. AGENTS AND ACTIONS 1993; 39 Spec No:C11-3. [PMID: 8273545 DOI: 10.1007/bf01972705] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
SC-41930, 7-[3-(4-acetyl-3-methoxy-2-propylphenoxy)propoxy]-3,4- dihydro-8-propyl-2H-1-benzopyran-2-carboxylic acid, is a selective, orally active, LTB4 receptor antagonist currently in clinical trials for psoriasis and ulcerative colitis. Exhaustive SAR studies found a potential backup compound, SC-50605, which was 7-16 times more potent than SC-41930 in LTB4 receptor binding, chemotaxis and degranulation assays. SC-50605 also inhibited LTB4-induced intradermal chemotaxis in cavine skin at an oral dose of 0.10 mg/kg and displayed good activity in animal models of colitis and epidermal inflammation both orally and topically.
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Affiliation(s)
- T D Penning
- Department of Chemistry, Searle Research and Development, Skokie, IL 60077
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Fiandanese V, Punzi A. A Direct Access to a Potential LTB4-Antagonist, SM-9064,via, Disilyl Derivatives. SYNTHETIC COMMUN 1993. [DOI: 10.1080/00397919308009765] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sofia MJ, Saussy DL, Jackson WT, Marder P, Silbaugh SA, Froelich LL, Cockerham SL, Stengel PW. -alkoxyphenol leukotriene B4 receptor antagonists: effect of a chroman carboxylic acid. Bioorg Med Chem Lett 1992. [DOI: 10.1016/s0960-894x(00)80454-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bienvenu K, Russell J, Granger DN. Leukotriene B4 mediates shear rate-dependent leukocyte adhesion in mesenteric venules. Circ Res 1992; 71:906-11. [PMID: 1355410 DOI: 10.1161/01.res.71.4.906] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Previous studies have demonstrated that low shear rates promote leukocyte adherence to microvascular endothelium in postcapillary venules. The objective of this study was to determine whether an accumulation of inflammatory mediators such as platelet activating factor and leukotriene B4 is responsible for shear rate-dependent leukocyte-endothelial cell adhesion. Postcapillary venules (25-39 microns in diameter) in cat mesentery were studied by intravital microscopy. Venular wall shear rate was varied over a wide range by graded occlusion of the mesenteric artery. Red blood cell velocity, vessel diameter, leukocyte rolling velocity, and the numbers of rolling and adherent leukocytes were measured at each shear rate. In one series of experiments, shear rate-dependent leukocyte adherence was monitored at different superfusion rates (1.0 and 2.5 ml/min). At the lower superfusion rate, the number of adherent leukocytes was significantly higher at any given shear rate when compared with results obtained at the higher superfusion rate. This suggests that reduced washout of inflammatory mediators contributes to shear rate-dependent leukocyte adhesion. Pretreatment with different platelet activating factor receptor antagonists (WEB 2086 or WEB 2170) had no effect on the number of adherent leukocytes normally observed at lower shear rates, suggesting that platelet activating factor does not play a major role in this process. However, shear rate-dependent leukocyte adhesion was largely prevented by pretreatment with either a leukotriene B4 receptor antagonist (SC-41930) or a leukotriene synthesis inhibitor (L663,536). The results of this study indicate that a reduced washout of leukotriene B4 is responsible for the enhanced leukocyte adherence that occurs at low venular wall shear rates.
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Affiliation(s)
- K Bienvenu
- Department of Physiology and Biophysics, Louisiana State University Medical Center, Shreveport 71130-3932
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Zimmerman BJ, Gaginella TS, Granger DN. Effects of SC-41930 on leukocyte adherence and emigration in rat mesenteric venules. AGENTS AND ACTIONS 1992; 37:80-4. [PMID: 1333727 DOI: 10.1007/bf01987893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This study demonstrates that SC-41930, 7-[3-(4-acetyl-3-methoxy-2-propylphenoxy)-propoxy]-3,4-dihydro-8-p ropyl-2H-1-benzopyran-2-carboxylic acid, an orally active LTB4 receptor antagonist, reduces LTB4-induced leukocyte adhesion and emigration in rat mesenteric venules. The mesentery of Sprague-Dawley rats was prepared for intravital microscopic examination and venules of 25-35 microns were chosen for evaluation. In control animals, LTB4 (20 nM) was superfused over the mesentery for 30 min. In the treatment group SC-41930 (5 microM) was superfused for 30 min, followed by a 30 min superfusion with SC-41930 and LTB4. The LTB4-induced increase in leukocyte adherence and emigration in postcapillary venules was significantly attenuated by pretreatment with SC-41930. Other experiments demonstrated that platelet-activating-factor-induced leukocyte adherence was not affected by SC-41930. These results indicate that SC-41930 is a potent inhibitor of LTB4-induced leukocyte-endothelial cell adhesive interactions in postcapillary venules.
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Affiliation(s)
- B J Zimmerman
- Louisiana State University Medical Center, Department of Physiology, Shreveport 71130
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28
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Marder P, Schultz RM, Spaethe SM, Sofia MJ, Herron DK. Flow cytometric evaluation of the effects of leukotriene B4 receptor antagonists (LY255283 and SC-41930) on calcium mobilization and integrin expression of activated human neutrophils. Prostaglandins Leukot Essent Fatty Acids 1992; 46:265-70. [PMID: 1329112 DOI: 10.1016/0952-3278(92)90033-f] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Leukotriene B4 (LTB4) is a naturally occurring eicosanoid mediator which chemoattracts and stimulates human neutrophils to an activated state. In an attempt to identify novel antiinflammatory drugs, synthetic LTB4 receptor antagonists have been developed in several laboratories. In this study, the effects of two such LTB4 receptor antagonists were examined for their influences on two elements of human neutrophil activation using flow cytometric techniques. Quantitative flow cytometric assays of human neutrophil intracellular calcium mobilization and up-regulation of integrin (CD11b/CD18) cell surface expression were developed and used to determine the potency and selectivity of compounds LY255283 and SC-41930 on these activities. Our results indicate that both compounds preferentially block these functions of LTB4-induced human neutrophil activation in a concentration dependent manner and fall in the 1-2 microM range of antagonist activity. Compound SC-41930 was approximately twice as potent as LY255283 in blocking the targeted agonist effects. Both compounds were approximately 100-fold less potent in blocking the same functions of interleukin-8-induced human neutrophil activation.
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Affiliation(s)
- P Marder
- Lilly Research Laboratories, Indianapolis, IN 46285
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29
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Asako H, Kubes P, Wallace J, Wolf RE, Granger DN. Modulation of leukocyte adhesion in rat mesenteric venules by aspirin and salicylate. Gastroenterology 1992; 103:146-52. [PMID: 1319367 DOI: 10.1016/0016-5085(92)91107-f] [Citation(s) in RCA: 116] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Erythrocyte velocity, vessel diameter, leukocyte rolling velocity, and number of adherent and emigrated leukocytes were measured in postcapillary venules both before and during superfusion of rat mesentery with either aspirin or sodium salicylate. In some experiments, animals were treated with either a leukotriene (LT)-synthesis inhibitor (L-663,536), an LTD4 antagonist (MK-571), an LTB4 antagonist (SC-41930), misoprostol, or prostaglandin (PG) I2, then the aspirin protocol was repeated. Superfusion of aspirin but not sodium salicylate resulted in increased leukocyte adherence and a reduced leukocyte rolling velocity but did not affect leukocyte emigration. Aspirin-induced leukocyte adhesion was effectively prevented by the LT-synthesis inhibitor and LTB4 antagonist but not by the LTD4 antagonist. Misoprostol and PGI2 also prevented the aspirin-induced adhesion responses. Superfusion of the mesentery with either platelet-activating factor (PAF) or LTB4 enhanced leukocyte adherence and emigration while reducing leukocyte rolling velocity. Sodium salicylate prevented all of the adhesion responses elicited by LTB4. Although salicylate did not affect the PAF-induced leukocyte adherence and rolling responses, it completely prevented the increased leukocyte emigration. These results indicate that aspirin promotes, whereas sodium salicylate inhibits, leukocyte-endothelial cell adhesive interactions at therapeutically relevant concentrations.
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Affiliation(s)
- H Asako
- Department of Physiology, Louisiana State University Medical Center, Shreveport
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30
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Vaananen PM, Keenan CM, Grisham MB, Wallace JL. Pharmacological investigation of the role of leukotrienes in the pathogenesis of experimental NSAID gastropathy. Inflammation 1992; 16:227-40. [PMID: 1323529 DOI: 10.1007/bf00918812] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The role of leukotrienes in the pathogenesis of acute gastric ulceration induced by nonsteroidal antiinflammatory drugs was investigated using a rat model. One part of the study involved oral pretreatment with a leukotriene synthesis inhibitor 1 h prior to administration of indomethacin (20 mg/kg per os). Three hours after indomethacin, the extent of macroscopically visible gastric damage was determined, and gastric LTB4 synthesis was determined. The compounds tested were PF-5901, A-64077, nordihydroguaiaretic acid, and L-698,037. Each compound produced dose-related inhibition of gastric LTB4 synthesis and a parallel reduction in the severity of indomethacin-induced damage. The antioxidant properties of these compounds was assessed using an in vitro assay. There was no correlation between the antioxidant properties of the compounds and their ability to reduce the severity of indomethacin-induced gastric damage. In the second part of the study, the effects of intravenous, administration of LTD4 and LTB4 receptor antagonists on indomethacin-induced gastric epithelial damage (measured by permeability to [51Cr]EDTA) were assessed. The two LTD4 receptor antagonists (MK-571 and ICI-204,219) significantly reduced the permeability changes induced by indomethacin, while the two LTB4 antagonists (SC-41930 and LY-255,283) were without significant effect. Despite the reduction of gastric epithelial injury, blockade of LTD4 receptors did not markedly affect the extent of macroscopically visible injury. These data are consistent with the hypothesis that leukotrienes contribute to the epithelial injury and macroscopically visible damage induced by NSAIDs. However, it remains unclear to what extent leukotrienes are involved in the initiation of the injury, as opposed to its amplification.
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Affiliation(s)
- P M Vaananen
- Gastrointestinal Research Group, Faculty of Medicine, University of Calgary, Alberta, Canada
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31
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Kemény L, Ruzicka T. SC-41930, a leukotriene B4 receptor antagonist, inhibits 12(S)-hydroxyeicosatetraenoic acid (12(S)-HETE) binding to epidermal cells. AGENTS AND ACTIONS 1991; 32:339-42. [PMID: 1650525 DOI: 10.1007/bf01980895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
SC-41930, 7-[3-(4-acetyl-3-methoxy-2-propylphenoxy)-propoxyl]-3, 4-dihydro-8-propyl-2H-1-benzopyran-2-carboxylic acid, a potent leukotriene-B4 (LTB4) receptor antagonist, inhibits in vivo 12-hydroxyeicosatetraenoic acid (12-HETE)-induced neutrophil infiltration, suggesting a potential 12-HETE receptor antagonist effect, as well. Since 12-HETE is assumed to have a pathophysiological role in inflammatory skin diseases, and epidermal cells possess high affinity binding sites for 12(S)-HETE, we studied the effect of SC-41930 on 12(S)-HETE binding to the human epidermal cell line, SCL-II. SC-41930 antagonized the 12(S)-HETE binding to SCL-II cells with a Ki of 480 nM. This Ki value is similar to that obtained for the inhibition of LTB4 binding to human neutrophils. Our results show that SC-41930, in addition to its LTB4 receptor antagonist effect, exhibits 12-HETE receptor antagonist effect as well, and therefore may be of benefit in skin diseases with elevated 12-HETE levels.
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Affiliation(s)
- L Kemény
- Department of Dermatology, University of Munich, FRG
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32
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Djuric SW, Miyashiro JM, Penning TD, Keith RH, Villani-Price D, Tsai BS. Enantioselective total synthesis and pharmacologic profile of 12-deoxy-12(S)-methyl leukotriene B4. Bioorg Med Chem Lett 1991. [DOI: 10.1016/s0960-894x(01)80795-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Fretland DJ, Widomski DL, Zemaitis JM, Walsh RE, Levin S, Djuric SW, Shone RL, Tsai BS, Gaginella TS. Inflammation of guinea pig dermis. Effects of leukotriene B4 receptor antagonist, SC-41930. Inflammation 1990; 14:727-39. [PMID: 1965311 DOI: 10.1007/bf00916375] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Neutrophil (PMNL) infiltration is a prominent feature of human psoriasis. Psoriatic skin lesions contain abnormally high amounts of leukotriene B4 (LTB4), itself a potent PMNL chemoattractant both in vivo and in vitro. SC-41930 (7-[3-(4-acetyl-3-methoxy-2-propylphenoxy)-propoxy]-3,4-dihydro-8- propyl-2H-1-benzopyran-2-carboxylic acid), an orally active LTB4 receptor antagonist, was tested topically in models of skin inflammation induced by 200 nmol of the calcium ionophore A23187 or 200 micrograms phorbol-12-myristate-13-acetate (PMA) applied topically to the guinea pig ear as assessed by ear weight, levels of the PMNL marker enzyme myeloperoxidase (MPO), and histological examination (PMA model) at 4 and 18 h respectively. When coapplied topically with A23187 or PMA, SC-41930 significantly inhibited epidermal inflammation with ED50 values of 0.6 and 4 mg, respectively. SC-41930 treatment also was associated with lowered dermal LTB4 levels in both models. The PMA-induced skin inflammation model also was assessed histologically and revealed acanthosis, edema, PMNL infiltration, and rete ridge prominence as long as 96 h after a single application that was completely inhibited by SC-41930 topical coapplication. Furthermore, oral treatment (40 mg/kg) significantly reduced edema and inflammatory cell infiltration in both models. These models possess many of the characteristics of human psoriasis, and agents such as SC-41930 that demonstrate activity in these models may well have therapeutic utility in the treatment of human psoriasis.
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Affiliation(s)
- D J Fretland
- Department of Gastrointestinal Diseases, Searle Research and Development, Skokie, Illinois
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34
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Fretland DJ, Djuric SW, Gaginella TS. Eicosanoids and inflammatory bowel disease: regulation and prospects for therapy. Prostaglandins Leukot Essent Fatty Acids 1990; 41:215-33. [PMID: 2077536 DOI: 10.1016/0952-3278(90)90135-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- D J Fretland
- Department of Biological Research, Searle Research & Development, Skokie, Illinois 60077
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35
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Zimmerman BJ, Guillory DJ, Grisham MB, Gaginella TS, Granger DN. Role of leukotriene B4 in granulocyte infiltration into the postischemic feline intestine. Gastroenterology 1990; 99:1358-63. [PMID: 2170222 DOI: 10.1016/0016-5085(90)91162-y] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Several studies have demonstrated that granulocytes accumulate in the intestinal mucosa following ischemia/reperfusion. It has been suggested that leukotriene B4 may be released during ischemia/reperfusion and consequently may promote granulocyte infiltration into the mucosa. The objectives of this study were to determine whether (a) leukotriene B4 is produced in the gut mucosa during ischemia and reperfusion, and (b) inhibition of leukotriene B4 attenuates granulocyte infiltration into the postischemic intestinal mucosa. Isolated segments of cat intestine were subjected to 3 hours of ischemia and 1 hour of reperfusion. Mucosal samples were obtained during baseline, ischemia at 3 hours and reperfusion at 1 hour. Leukotriene B4 production was determined by radioimmunoassay. Tissue-associated myeloperoxidase activity was used to quantitate granulocyte accumulation in the mucosal samples. In untreated animals, mucosal leukotriene B4 concentration was higher at reperfusion compared with baseline levels. The reperfusion-induced increase in mucosal leukotriene B4 was entirely prevented by pretreatment with either nordihydroguaiaretic acid (Sigma Chemical Co., St. Louis, MO) or L663,536 (Merck-Frosst, Montreal, Quebec, Canada), two potent lipoxygenase inhibitors. Both lipoxygenase inhibitors, as well as leukotriene B4 antagonist (SC-41930) significantly attenuated the reperfusion-induced infiltration of granulocytes. These results indicate that leukotriene B4 plays an important role in mediating the granulocyte accumulation elicited by reperfusion of the ischemic bowel.
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Affiliation(s)
- B J Zimmerman
- Department of Physiology, Louisiana State University Medical Center, Shreveport
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36
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Fretland DJ, Djuric SW. 12(R)- and 12(S)-hydroxyeicosatetraenoic acids: chemistry, biology, and pharmacology. Prostaglandins Leukot Essent Fatty Acids 1989; 38:215-28. [PMID: 2517456 DOI: 10.1016/0952-3278(89)90125-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- D J Fretland
- Gastrointestinal Diseases Research, G. D. Searle and Co., Skokie, Illinois 60077
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37
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Tsai BS, Villani-Price D, Keith RH, Zemaitis JM, Bauer RF, Leonard R, Djuric SW, Shone RL. SC-41930: an inhibitor of leukotriene B4-stimulated human neutrophil functions. PROSTAGLANDINS 1989; 38:655-74. [PMID: 2561214 DOI: 10.1016/0090-6980(89)90048-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
SC-41930 was evaluated for effects on human neutrophil chemotaxis and degranulation. At concentrations up to 100 microM, SC-41930 alone exhibited no effect on neutrophil migration, but dose-dependently inhibited neutrophil chemotaxis induced by leukotriene B4 (LTB4) in a modified Boyden chamber. Concentrations of SC-41930 from 0.3 microM to 3 microM competitively inhibited LTB4-induced chemotaxis with a pA2 value of 6.35. While inactive at 10 microM against C5a-induced chemotaxis, SC-41930 inhibited N-formyl-methionyl-leucyl-phenylalanine (fMLP)-induced chemotaxis, with 10 times less potency than against LTB4-induced chemotaxis. SC-41930 inhibited [3H]LTB4 and [3H]fMLP binding to their receptor sites on human neutrophils with KD values of 0.2 microM and 2 microM, respectively. SC-41930 also inhibited neutrophil chemotaxis induced by 20-OH LTB or 12(R)-HETE. At concentrations up to 10 microM, SC-41930 alone did not cause neutrophil degranulation, but inhibited LTB4-induced degranulation in a noncompetitive manner. SC-41930 also inhibited fMLP- or C5a-induced degranulation, but was about 8 and 10 times less effective for fMLP and C5a, respectively. The results indicate that SC-41930 is a human neutrophil LTB4 receptor antagonist with greater specificity for LTB4 than for fMLP or C5a receptors.
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Affiliation(s)
- B S Tsai
- Gastrointestinal Diseases Research, G.D. Searle & Co., Skokie, IL 60077
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38
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Fretland DJ, Levin S, Tsai BS, Djurić SW, Widomski DL, Zemaitis JM, Shone RL, Bauer RF. The effect of leukotriene-B4 receptor antagonist, SC-41930, on acetic acid-induced colonic inflammation. AGENTS AND ACTIONS 1989; 27:395-7. [PMID: 2552769 DOI: 10.1007/bf01972832] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
SC-41930, 7-[3-(4-acetyl-3-methoxy-2-propylphenoxy)-propoxy]-3,4-dihydro-8-p ropyl- 2H-1-benzopyran-2-carboxylic acid, is a potent in vitro leukotriene-B4 (LTB4) receptor antagonist. LTB4 levels are elevated in colonic tissue of inflammatory bowel disease (IBD) patients which may account for the high degree of neutrophil (PMN) infiltration. The guinea pig acetic acid-induced colonic inflammation model has characteristics of IBD including PMN infiltration, edema, ulceration and necrosis. The model was used to evaluate the effect of SC-41930. SC-41930 was given orally, 30 min before and after intrarectal administration of 3% acetic acid. The PMN marker enzyme, myeloperoxidase, was measured along with histological evaluation to assess inflammation. Both parameters showed significantly less inflammation in SC-41930 treated animals with an oral ED50 of 20 mg/kg. These study results with an LTB4 receptor antagonist indicate a role for LTB4 in colonic inflammation and that an LTB4 receptor antagonist may be beneficial for treatment of IBD.
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Affiliation(s)
- D J Fretland
- Department of Gastrointestinal Diseases Research, G. D. Searle and Co., Skokie, IL 60077
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