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Expression profiling of PBMC-based diagnostic gene markers isolated from vasculitis patients.


ABSTRACT: Vasculitis (angiitis) is a systemic autoimmune disease that often causes fatal symptoms. We aimed to isolate cDNA markers that would be useful for diagnosing not only vasculitis but also other autoimmune diseases. For this purpose, we used stepwise subtractive hybridization and cDNA microarray analyses to comprehensively isolate the genes whose expressions are augmented in peripheral blood mononuclear cells (PBMCs) pooled from vasculitis patients. Subsequently, we used quantitative real-time polymerase chain reaction (qRT-PCR) to examine the mRNA levels of each candidate gene in individual patients. These analyses indicated that seven genes exhibit remarkably augmented expression in many vasculitis patients. Of these genes, we analyzed G0/G1 switch gene 2 (G0S2) further because G0S2 expression is also enhanced in the PBMCs of patients with systemic lupus erythematodes (SLE). We generated G0S2 transgenic mice that ubiquitously overexpress human G0S2. Although we did not observe any obvious vasculitis-related histopathologic findings in these mice, these mice are unhealthy as they produce only few offspring and showed elevated serum levels of two autoimmunity-related antibodies, anti-nuclear antibody, and anti-double strand DNA antibody. Thus, our large-scale gene profiling study may help finding sensitive and specific DNA markers for diagnosing autoimmune diseases including vasculitis and SLE.

SUBMITTER: Kobayashi S 

PROVIDER: S-EPMC2575881 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature

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Expression profiling of PBMC-based diagnostic gene markers isolated from vasculitis patients.

Kobayashi Shigeto S   Ito Akihiko A   Okuzaki Daisuke D   Onda Hiroaki H   Yabuta Norikazu N   Nagamori Ippei I   Suzuki Kazuo K   Hashimoto Hiroshi H   Nojima Hiroshi H  

DNA research : an international journal for rapid publication of reports on genes and genomes 20080617 4


Vasculitis (angiitis) is a systemic autoimmune disease that often causes fatal symptoms. We aimed to isolate cDNA markers that would be useful for diagnosing not only vasculitis but also other autoimmune diseases. For this purpose, we used stepwise subtractive hybridization and cDNA microarray analyses to comprehensively isolate the genes whose expressions are augmented in peripheral blood mononuclear cells (PBMCs) pooled from vasculitis patients. Subsequently, we used quantitative real-time pol  ...[more]

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