Estrogen receptor-alpha deficiency attenuates autoimmune disease in (NZB x NZW)F1 mice. 2008

K K Bynoté, and J M Hackenberg, and K S Korach, and D B Lubahn, and P H Lane, and K A Gould
Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198-5805, USA.

Estrogens promote lupus in humans and some mouse models of this disease. Nonetheless, little is known about the role of estrogen receptors in lupus pathogenesis. Here, we report that in females on the lupus-prone (NZB x NZW)F(1) background, disruption of estrogen receptor-alpha (ER alpha or Esr1) attenuated glomerulonephritis and increased survival. ER alpha deficiency also retarded development of anti-histone/DNA antibodies, suggesting that ER alpha promotes loss of immunologic tolerance. Furthermore, ER alpha deficiency in (NZB x NZW)F(1) females attenuated the subsequent development of anti-double-stranded DNA (dsDNA) IgG antibodies, which are associated with glomerulonephritis in this model. We provide evidence that ER alpha may promote lupus, at least in part, by inducing interferon-gamma, an estrogen-regulated cytokine that impacts this disease. ER alpha deficiency in (NZB x NZW)F(1) males increased survival and reduced anti-dsDNA antibodies, suggesting that ER alpha also modulates lupus in males. These studies demonstrate that ER alpha, rather than ER beta, plays a major role in regulating autoimmunity in (NZB x NZW)F(1) mice. Furthermore, our results suggest for the first time that ER alpha promotes lupus, at least in part, by impacting the initial loss of tolerance. These data suggest that targeted therapy disrupting ER alpha, most likely within the immune system, may be effective in the prevention and/or treatment of lupus.

UI MeSH Term Description Entries
D007178 Inbreeding The mating of plants or non-human animals which are closely related genetically. Backcrossing,Half-Sib Mating,Sib Mating,Genetic Inbreeding,Backcrossings,Genetic Inbreedings,Half Sib Mating,Half-Sib Matings,Inbreeding, Genetic,Mating, Half-Sib,Mating, Sib,Matings, Half-Sib,Matings, Sib,Sib Matings
D008180 Lupus Erythematosus, Systemic A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys, and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow. Libman-Sacks Disease,Lupus Erythematosus Disseminatus,Systemic Lupus Erythematosus,Disease, Libman-Sacks,Libman Sacks Disease
D008297 Male Males
D008814 Mice, Inbred NZB An inbred strain of mouse that is widely used as a model for AUTOIMMUNE DISEASES such as SYSTEMIC LUPUS ERYTHEMATOSUS. Mice, NZB,Mouse, Inbred NZB,Mouse, NZB,Inbred NZB Mice,Inbred NZB Mouse,NZB Mice,NZB Mice, Inbred,NZB Mouse,NZB Mouse, Inbred
D005260 Female Females
D005921 Glomerulonephritis Inflammation of the renal glomeruli (KIDNEY GLOMERULUS) that can be classified by the type of glomerular injuries including antibody deposition, complement activation, cellular proliferation, and glomerulosclerosis. These structural and functional abnormalities usually lead to HEMATURIA; PROTEINURIA; HYPERTENSION; and RENAL INSUFFICIENCY. Bright Disease,Kidney Scarring,Glomerulonephritides,Scarring, Kidney
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D047628 Estrogen Receptor alpha One of the ESTROGEN RECEPTORS that has marked affinity for ESTRADIOL. Its expression and function differs from, and in some ways opposes, ESTROGEN RECEPTOR BETA. ERalpha,Estradiol Receptor alpha,Estrogen Receptor 1,Estrogen Receptors alpha,Receptor alpha, Estrogen,Receptor alpha, Estradiol,alpha, Estradiol Receptor
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D018345 Mice, Knockout Strains of mice in which certain GENES of their GENOMES have been disrupted, or "knocked-out". To produce knockouts, using RECOMBINANT DNA technology, the normal DNA sequence of the gene being studied is altered to prevent synthesis of a normal gene product. Cloned cells in which this DNA alteration is successful are then injected into mouse EMBRYOS to produce chimeric mice. The chimeric mice are then bred to yield a strain in which all the cells of the mouse contain the disrupted gene. Knockout mice are used as EXPERIMENTAL ANIMAL MODELS for diseases (DISEASE MODELS, ANIMAL) and to clarify the functions of the genes. Knockout Mice,Mice, Knock-out,Mouse, Knockout,Knock-out Mice,Knockout Mouse,Mice, Knock out

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