Defective Generation of a Humoral Immune Response Is Associated with a Reduced Incidence and Severity of Collagen-Induced Arthritis in Microsomal Prostaglandin E Synthase-1 Null Mice

Microsomal PGE synthase-1 (mPGES-1) is an inducible enzyme that acts downstream of cyclooxygenase and specifically catalyzes the conversion of PGH(2) to PGE(2). The present study demonstrates the effect of genetic deletion of mPGES-1 on the developing immunologic responses and its impact on the clin...

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Veröffentlicht in:The Journal of immunology (1950) 2008-06, Vol.180 (12), p.8361-8368
Hauptverfasser: Kojima, Fumiaki, Kapoor, Mohit, Yang, Lihua, Fleishaker, Erica L, Ward, Martin R, Monrad, Seetha U, Kottangada, Ponnappa C, Pace, Charles Q, Clark, James A, Woodward, Jerold G, Crofford, Leslie J
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container_end_page 8368
container_issue 12
container_start_page 8361
container_title The Journal of immunology (1950)
container_volume 180
creator Kojima, Fumiaki
Kapoor, Mohit
Yang, Lihua
Fleishaker, Erica L
Ward, Martin R
Monrad, Seetha U
Kottangada, Ponnappa C
Pace, Charles Q
Clark, James A
Woodward, Jerold G
Crofford, Leslie J
description Microsomal PGE synthase-1 (mPGES-1) is an inducible enzyme that acts downstream of cyclooxygenase and specifically catalyzes the conversion of PGH(2) to PGE(2). The present study demonstrates the effect of genetic deletion of mPGES-1 on the developing immunologic responses and its impact on the clinical model of bovine collagen-induced arthritis. mPGES-1 null and heterozygous mice exhibited decreased incidence and severity of arthritis compared with wild-type mice in a gene dose-dependent manner. Histopathological examination revealed significant reduction in lining hyperplasia and tissue destruction in mPGES-1 null mice compared with their wild-type littermates. mPGES-1 deficient mice also exhibited attenuation of mechanical nociception in a gene dose-dependent manner. In addition, mPGES-1 null and heterozygous mice showed a marked reduction of serum IgG against type II collagen, including subclasses IgG1, IgG2a, IgG2b, IgG2c, and IgG3, compared with wild-type mice, which correlated with the reduction in observed inflammatory features. These results demonstrate for the first time that deficiency of mPGES-1 inhibits the development of collagen-induced arthritis, at least in part, by blocking the development of a humoral immune response against type II collagen. Pharmacologic inhibition of mPGES-1 may therefore impact both the inflammation and the autoimmunity associated with human diseases such as rheumatoid arthritis.
doi_str_mv 10.4049/jimmunol.180.12.8361
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The present study demonstrates the effect of genetic deletion of mPGES-1 on the developing immunologic responses and its impact on the clinical model of bovine collagen-induced arthritis. mPGES-1 null and heterozygous mice exhibited decreased incidence and severity of arthritis compared with wild-type mice in a gene dose-dependent manner. Histopathological examination revealed significant reduction in lining hyperplasia and tissue destruction in mPGES-1 null mice compared with their wild-type littermates. mPGES-1 deficient mice also exhibited attenuation of mechanical nociception in a gene dose-dependent manner. In addition, mPGES-1 null and heterozygous mice showed a marked reduction of serum IgG against type II collagen, including subclasses IgG1, IgG2a, IgG2b, IgG2c, and IgG3, compared with wild-type mice, which correlated with the reduction in observed inflammatory features. These results demonstrate for the first time that deficiency of mPGES-1 inhibits the development of collagen-induced arthritis, at least in part, by blocking the development of a humoral immune response against type II collagen. 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These results demonstrate for the first time that deficiency of mPGES-1 inhibits the development of collagen-induced arthritis, at least in part, by blocking the development of a humoral immune response against type II collagen. 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These results demonstrate for the first time that deficiency of mPGES-1 inhibits the development of collagen-induced arthritis, at least in part, by blocking the development of a humoral immune response against type II collagen. Pharmacologic inhibition of mPGES-1 may therefore impact both the inflammation and the autoimmunity associated with human diseases such as rheumatoid arthritis.</abstract><cop>United States</cop><pub>Am Assoc Immnol</pub><pmid>18523303</pmid><doi>10.4049/jimmunol.180.12.8361</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects Animals
Arthritis, Experimental - enzymology
Arthritis, Experimental - genetics
Arthritis, Experimental - immunology
Arthritis, Experimental - therapy
Cattle
Collagen Type II - administration & dosage
Collagen Type II - immunology
Cyclooxygenase 1 - deficiency
Cyclooxygenase 1 - genetics
Cyclooxygenase 1 - physiology
Cyclooxygenase 2 - biosynthesis
Cyclooxygenase 2 - genetics
Cyclooxygenase 2 - physiology
Female
Gene Deletion
Genetic Carrier Screening
Immunoglobulin G - biosynthesis
Immunoglobulin G - blood
Immunoglobulin G - physiology
Immunoglobulin M - biosynthesis
Incidence
Male
Membrane Proteins - deficiency
Membrane Proteins - genetics
Membrane Proteins - physiology
Mice
Mice, Inbred DBA
Mice, Knockout
Microsomes - enzymology
RNA, Messenger - biosynthesis
Severity of Illness Index
title Defective Generation of a Humoral Immune Response Is Associated with a Reduced Incidence and Severity of Collagen-Induced Arthritis in Microsomal Prostaglandin E Synthase-1 Null Mice
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