Novel compounds that interact with both leukotriene B-4 receptors and vanilloid TRPV1 receptors

D McHugh, R S McMaster, R G Pertwee, S Roy, A Mahadevan, R K Razdan, R A Ross

Research output: Contribution to journalArticle

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Abstract

The aim of this study was to investigate the interaction of a series of novel compounds with leukotriene B-4 receptors ( BLT) and vanilloid receptor ( TRPV1). First, we characterized leukotriene B-4 ( LTB4) ethanolamide. In guinea pig isolated lung parenchyma, LTB4 ethanolamide antagonized the contractile action of LTB4 with an apparent K-B value of 7.28 nM. Using a Boyden chamber assay, we demonstrated that this compound stimulated human neutrophil migration in a similar manner to LTB 4 but with lower efficacy. In rat TRPV1 ( rTRPV1)-expressing Chinese hamster ovary ( CHO) cells and dorsal root ganglion ( DRG) neurons, LTB4 and LTB4 ethanolamide acted as low-efficacy agonists, increasing intracellular calcium concentration ([ Ca2+](i)) in a capsazepine- sensitive manner. These results prompted us to hypothesize that a molecule may possess pharmacophores such that it is capable of dual antagonism of BLT and TRPV1 receptors. Two novel compounds, N-{2-fluoro-4-[ 3-(11 hydroxyheptadec-8-enyl)-thioureiomethyl]phenyl}-methanesulfonamide ( O-3367) and N-{4-[ 3-( 11 hydroxyheptadec-8-enyl)-thioureio-methyl]-phenyl}-methanesulfonamide ( O-3383), were synthesized. In human neutrophils, both compounds acted as antagonists, significantly attenuating the BLT receptor-mediated ability of LTB4 to induce migration, with pIC(50) values of 7.22 +/- 0.17 and 5.95 +/- 0.16, respectively. In rTRPV1-expressing CHO cells, they caused a significant rightward shift in the log concentration-response curve for the TRPV1 receptor agonist capsaicin ( 3-methoxy-4-hydroxy) benzyl-8-methyl-6-nonenamide). In DRG neurons O-3367 significantly attenuated the capsaicin-induced increases in [ Ca2+](i) with a pIC(50) value of 5.94 +/- 0.004. O-3367 and O-3383 represent novel structural templates for generating compounds possessing dual antagonism at BLT and TRPV1 receptors. In view of the crucial role of both TRPV1 and BLT receptors in the pathophysiology of inflammatory conditions, such compounds may betoken a novel class of highly effective therapeutics.

Original languageEnglish
Pages (from-to)955-965
Number of pages11
JournalJournal of Pharmacology and Experimental Therapeutics
Volume316
DOIs
Publication statusPublished - 2006

Keywords

  • CANNABINOID RECEPTORS
  • SENSORY NEURONS
  • ANANDAMIDE
  • CAPSAICIN
  • INFLAMMATION
  • CHANNELS
  • AGONIST
  • BLT2
  • HOT
  • LIPOXYGENASE

Cite this

Novel compounds that interact with both leukotriene B-4 receptors and vanilloid TRPV1 receptors. / McHugh, D ; McMaster, R S ; Pertwee, R G ; Roy, S ; Mahadevan, A ; Razdan, R K ; Ross, R A .

In: Journal of Pharmacology and Experimental Therapeutics, Vol. 316, 2006, p. 955-965.

Research output: Contribution to journalArticle

McHugh, D ; McMaster, R S ; Pertwee, R G ; Roy, S ; Mahadevan, A ; Razdan, R K ; Ross, R A . / Novel compounds that interact with both leukotriene B-4 receptors and vanilloid TRPV1 receptors. In: Journal of Pharmacology and Experimental Therapeutics. 2006 ; Vol. 316. pp. 955-965.
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AU - McHugh, D

AU - McMaster, R S

AU - Pertwee, R G

AU - Roy, S

AU - Mahadevan, A

AU - Razdan, R K

AU - Ross, R A

PY - 2006

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N2 - The aim of this study was to investigate the interaction of a series of novel compounds with leukotriene B-4 receptors ( BLT) and vanilloid receptor ( TRPV1). First, we characterized leukotriene B-4 ( LTB4) ethanolamide. In guinea pig isolated lung parenchyma, LTB4 ethanolamide antagonized the contractile action of LTB4 with an apparent K-B value of 7.28 nM. Using a Boyden chamber assay, we demonstrated that this compound stimulated human neutrophil migration in a similar manner to LTB 4 but with lower efficacy. In rat TRPV1 ( rTRPV1)-expressing Chinese hamster ovary ( CHO) cells and dorsal root ganglion ( DRG) neurons, LTB4 and LTB4 ethanolamide acted as low-efficacy agonists, increasing intracellular calcium concentration ([ Ca2+](i)) in a capsazepine- sensitive manner. These results prompted us to hypothesize that a molecule may possess pharmacophores such that it is capable of dual antagonism of BLT and TRPV1 receptors. Two novel compounds, N-{2-fluoro-4-[ 3-(11 hydroxyheptadec-8-enyl)-thioureiomethyl]phenyl}-methanesulfonamide ( O-3367) and N-{4-[ 3-( 11 hydroxyheptadec-8-enyl)-thioureio-methyl]-phenyl}-methanesulfonamide ( O-3383), were synthesized. In human neutrophils, both compounds acted as antagonists, significantly attenuating the BLT receptor-mediated ability of LTB4 to induce migration, with pIC(50) values of 7.22 +/- 0.17 and 5.95 +/- 0.16, respectively. In rTRPV1-expressing CHO cells, they caused a significant rightward shift in the log concentration-response curve for the TRPV1 receptor agonist capsaicin ( 3-methoxy-4-hydroxy) benzyl-8-methyl-6-nonenamide). In DRG neurons O-3367 significantly attenuated the capsaicin-induced increases in [ Ca2+](i) with a pIC(50) value of 5.94 +/- 0.004. O-3367 and O-3383 represent novel structural templates for generating compounds possessing dual antagonism at BLT and TRPV1 receptors. In view of the crucial role of both TRPV1 and BLT receptors in the pathophysiology of inflammatory conditions, such compounds may betoken a novel class of highly effective therapeutics.

AB - The aim of this study was to investigate the interaction of a series of novel compounds with leukotriene B-4 receptors ( BLT) and vanilloid receptor ( TRPV1). First, we characterized leukotriene B-4 ( LTB4) ethanolamide. In guinea pig isolated lung parenchyma, LTB4 ethanolamide antagonized the contractile action of LTB4 with an apparent K-B value of 7.28 nM. Using a Boyden chamber assay, we demonstrated that this compound stimulated human neutrophil migration in a similar manner to LTB 4 but with lower efficacy. In rat TRPV1 ( rTRPV1)-expressing Chinese hamster ovary ( CHO) cells and dorsal root ganglion ( DRG) neurons, LTB4 and LTB4 ethanolamide acted as low-efficacy agonists, increasing intracellular calcium concentration ([ Ca2+](i)) in a capsazepine- sensitive manner. These results prompted us to hypothesize that a molecule may possess pharmacophores such that it is capable of dual antagonism of BLT and TRPV1 receptors. Two novel compounds, N-{2-fluoro-4-[ 3-(11 hydroxyheptadec-8-enyl)-thioureiomethyl]phenyl}-methanesulfonamide ( O-3367) and N-{4-[ 3-( 11 hydroxyheptadec-8-enyl)-thioureio-methyl]-phenyl}-methanesulfonamide ( O-3383), were synthesized. In human neutrophils, both compounds acted as antagonists, significantly attenuating the BLT receptor-mediated ability of LTB4 to induce migration, with pIC(50) values of 7.22 +/- 0.17 and 5.95 +/- 0.16, respectively. In rTRPV1-expressing CHO cells, they caused a significant rightward shift in the log concentration-response curve for the TRPV1 receptor agonist capsaicin ( 3-methoxy-4-hydroxy) benzyl-8-methyl-6-nonenamide). In DRG neurons O-3367 significantly attenuated the capsaicin-induced increases in [ Ca2+](i) with a pIC(50) value of 5.94 +/- 0.004. O-3367 and O-3383 represent novel structural templates for generating compounds possessing dual antagonism at BLT and TRPV1 receptors. In view of the crucial role of both TRPV1 and BLT receptors in the pathophysiology of inflammatory conditions, such compounds may betoken a novel class of highly effective therapeutics.

KW - CANNABINOID RECEPTORS

KW - SENSORY NEURONS

KW - ANANDAMIDE

KW - CAPSAICIN

KW - INFLAMMATION

KW - CHANNELS

KW - AGONIST

KW - BLT2

KW - HOT

KW - LIPOXYGENASE

U2 - 10.1124/jpet.105.095992

DO - 10.1124/jpet.105.095992

M3 - Article

VL - 316

SP - 955

EP - 965

JO - Journal of Pharmacology and Experimental Therapeutics

JF - Journal of Pharmacology and Experimental Therapeutics

SN - 0022-3565

ER -