Interferon and granulopoiesis signatures in systemic lupus erythematosus blood.

Interferon and granulopoiesis signatures in systemic lupus erythematosus blood.
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DOI:
10.1084/jem.20021553
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发表时间:
2003-03-17
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Pascual V
Pascual V
中科院分区:
其他
文献类型:
--
作者:
Bennett L;Palucka AK;Arce E;Cantrell V;Borvak J;Banchereau J;Pascual V

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系统性红斑狼疮(SLE)是一种典型的系统性自身免疫性疾病,其特征是发病率高。使用寡核苷酸微阵列,我们现在表明,活动性SLE可以区分一个非常均匀的基因表达模式与过度表达的粒细胞生成相关和干扰素(IFN)诱导的基因。使用最严格的统计分析(Bonferroni校正),发现15个基因在SLE患者中高度上调,其中14个是IFN的靶点,一个是防御素DEFA-3,未成熟粒细胞的主要产物。一个更自由的校正(Benjamini和Hochberg校正)产生了18个额外的基因,其中12个是IFN调节和4粒细胞特异性。事实上,在大部分SLE患者的白色血细胞中发现了未成熟的中性粒细胞。高剂量糖皮质激素是疾病发作的标准治疗方法,可关闭干扰素信号,进一步支持这种细胞因子在SLE中的作用。根据SLEDAI,10个基因的表达与疾病活动相关。与介导防御素趋化活性的甲酰肽受体样1蛋白的相关性最显著(P < 0.001,r = 0.55)。因此,虽然IFN信号证实了这种细胞因子在SLE中的中心作用,但血细胞的微阵列分析揭示了未成熟粒细胞可能参与SLE发病机制。
Systemic lupus erythematosus (SLE) is a prototype systemic autoimmune disease characterized by flares of high morbidity. Using oligonucleotide microarrays, we now show that active SLE can be distinguished by a remarkably homogeneous gene expression pattern with overexpression of granulopoiesis-related and interferon (IFN)-induced genes. Using the most stringent statistical analysis (Bonferroni correction), 15 genes were found highly up-regulated in SLE patients, 14 of which are targets of IFN and one, defensin DEFA-3, a major product of immature granulocytes. A more liberal correction (Benjamini and Hochberg correction) yielded 18 additional genes, 12 of which are IFN-regulated and 4 granulocyte-specific. Indeed immature neutrophils were identified in a large fraction of SLE patients white blood cells. High dose glucocorticoids, a standard treatment of disease flares, shuts down the interferon signature, further supporting the role of this cytokine in SLE. The expression of 10 genes correlated with disease activity according to the SLEDAI. The most striking correlation (P < 0.001, r = 0.55) was found with the formyl peptide receptor-like 1 protein that mediates chemotactic activities of defensins. Therefore, while the IFN signature confirms the central role of this cytokine in SLE, microarray analysis of blood cells reveals that immature granulocytes may be involved in SLE pathogenesis.
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