Abstract
Murine mastocytoma cells treated with calcium ionophore A23187 produced a slow-reacting substance (SRS) that caused guinea pig ileum to contract. The response was reversed by the SRS antagonist FPL 55712. On the basis of isotope incorporation experiments, spectroscopy, and chemical degradations, the SRS was identified as a cysteine-containing derivative of 5-hydroxy-7,9,11,14-icosatetraenoic acid. This amino acid was attached in thioether linkage at C-6. The SRS is structurally related to previously identified epoxy and dihydroxy metabolites of arachidonic acid in leukocytes. A common feature is the presence of a conjugated triene, and the name "leukotriene" has been introduced to designate these compounds. Leukotriene A (5,6-epoxy-7,9,11,14-icosatetraenoic acid) is an intermediate in the formation of leukotriene B (5,12-dihydroxy-6,8,10,14-icosatetraenoic acid) and is proposed to be a precursor also of leukotriene C, which is the SRS identified here.
Keywords
Abortifacient Agents--analysis
Abortion
Drug Induced
Abortion
Induced
Clinical Research
Family Planning
Fertility Control
Postconception
In Vitro
Research Methodology
MeSH Terms
Animals
Arachidonic Acids/analysis
Autacoids/analysis,biosynthesis
Calcimycin/pharmacology
Cells, Cultured
Cysteine/analogs & derivatives,analysis
Ionophores/pharmacology
Mast-Cell Sarcoma/analysis
Mice
SRS-A/isolation & purification
Sarcoma, Experimental/analysis
Chemicals
Arachidonic Acids
Autacoids
Ionophores
SRS-A
Calcimycin
Cysteine
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Murphy R C
Hammarström S
Samuelsson B
Other Abstracts
eng
This paper reports that the ionophore-induced slow-reacting substance (SRS) from mast cell tumor leukocytes is a member of a group of compounds called leukotrienes. Briefly, murine mastocytoma cells treated with calcium ionophore produced a SRS that caused guinea pig ileum to contract. This response could be reversed by an SRS antagonist, FPL 55712. Based on osotope incorporation experiments, spectrophotometry, and chemical degradation analyses, the SRS was identified. It is a cysteine-containing derivative of 5-hydroxy-7,9,11,14-icosatetraenoic acid, which was attached in a thioether linkage at C-6. The SRS was structurally related to previously identified epoxy and dihydroxy metabolites of arachidonic acid in leukocytes. The leukotrienes have the common feature of the presence of a conjugated triene. Leukotriene A is an intermediate in the formation of leukotriene B, and is proposed to be the precursor also of leukotriene C, the SRS chemically identified in this paper.
References (24)
24 references, click to expand
-
The release of 35-S-labelled material and SRS-A from immunologically challenged guinea-pig lungs.
J Physiol. 1975 May;247(1):37P-38P
PMID: 1138065
-
Liberation of histamine and formation of lysocithin-like substances by cobra venom.
J Physiol. 1938 Nov 14;94(2):187-226
PMID: 16995038
-
On the structure of slow reacting substance of anaphylaxis: evidence of biosynthesis from arachidonic acid.
Prostaglandins. 1977 Jul;14(1):21-38
PMID: 19813
-
Precursor role of arachidonic acid in release of slow reacting substance from rat basophilic leukemia cells.
Proc Natl Acad Sci U S A. 1977 Oct;74(10):4577-81
PMID: 22078
-
Arachidonic acid metabolism in polymorphonuclear leukocytes: unstable intermediate in formation of dihydroxy acids.
Proc Natl Acad Sci U S A. 1979 Jul;76(7):3213-7
PMID: 290996
-
Stimulated production of slow reacting substances by mercaptans from ionophore A 23187-induced mononuclear cells: mercaptan structure-activity studies.
Life Sci. 1978 Nov 20;23(21):2119-26
PMID: 31540
-
Release of slow reacting substance (SRS) from rat basophilic leukemia (RBL-1) cells.
J Immunol. 1977 Aug;119(2):618-22
PMID: 328779
-
Ionophore A 23187-induced production of slow reacting substance of anaphylaxis (SRS-A) by rat peritoneal cells in vitro: evidence for production by mononuclear cells.
J Immunol. 1978 Mar;120(3):998-1005
PMID: 344800
-
Homeostasis of effector systems which can also be recruited for immunologic reactions.
J Immunol. 1978 Sep;121(3):793-805
PMID: 357653
-
Effects of modulators of arachidonic acid metabolism on the synthesis and release of slow-reacting substance of anaphylaxis.
Br J Pharmacol. 1979 Jan;65(1):35-41
PMID: 367476
-
Arachidonic acid metabolism in polymorphonuclear leukocytes: effects of ionophore A23187.
Proc Natl Acad Sci U S A. 1979 May;76(5):2148-52
PMID: 377292
-
Purification and properties of the slow reacting substance formed in the cat paw perfused with compound 48-80.
Acta Physiol Scand. 1971 Jul;82(3):358-74
PMID: 4108403
-
Slow reacting substance of anaphylaxis.
Adv Immunol. 1969;10:105-44
PMID: 4188319
-
Transformation of arachidonic acid by rabbit polymorphonuclear leukocytes. Formation of a novel dihydroxyeicosatetraenoic acid.
J Biol Chem. 1979 Apr 25;254(8):2643-6
PMID: 429307
-
The physicochemical characteristics and purification of slow-reacting substance of anaphylaxis.
J Immunol. 1973 Mar;110(3):760-70
PMID: 4347478
-
Inactivation of slow reacting substance of anaphylaxins (SRS-A) by arylsulfatases.
J Immunol. 1974 Jul;113(1):316-22
PMID: 4832311
-
Steric analysis of hydroperoxides formed by lipoxygenase oxygenation of linoleic acid.
Anal Biochem. 1971 Oct;43(2):515-26
PMID: 5168775
-
The effect of thiols on the immunologic release of slow reacting substance of anaphylaxis. II. Other in vitro and in vivo models.
J Immunol. 1976 Feb;116(2):392-7
PMID: 55439
-
On the specificity of the oxygenation of unsaturated fatty acids catalyzed by soybean lipoxidase.
J Biol Chem. 1967 Nov 25;242(22):5329-35
PMID: 6070850
-
Slow-reacting substance of anaphylaxis: purification and characterisation.
FEBS Lett. 1978 Mar 15;87(2):203-6
PMID: 631337
-
Release of mediators of anaphylaxis: inhibition of prostaglandin synthesis and the modification of release of slow reacting substance of anaphylaxis and histamine.
Br J Pharmacol. 1978 Jan;62(1):61-6
PMID: 74266
-
Slow reacting substances: comparison of some properties of human lung SRS-A and two distinct fractions from ionophore-induced rat mononuclear cell SRS.
J Immunol. 1979 Jan;122(1):160-5
PMID: 762414
-
Prostaglandins and slow-reacting substance.
J Allergy Clin Immunol. 1979 Jan;63(1):1-14
PMID: 82564
-
Separation of slow reacting substance of anaphylaxis (SRS-A) from human lung into four biologically active fractions.
J Immunol. 1976 Sep;117(3):1039-44
PMID: 8568