Peli-1基因单核苷酸多态性及其mRNA水平与系统性红斑狼疮的相关性研究
[Abstract]:Research background systemic lupus erythematosus (Systemic lupus erythematosus, SLE) is a kind of chronic autoimmune disease in women. Its clinical manifestation is more complex, the course of disease is prolonged, and many systems and organs are often involved. In recent years, a lot of studies have been made to explore the etiology and pathogenesis of SLE, but the exact mechanism of it has been studied. It is not yet fully understood. It is generally considered to be associated with a variety of factors such as genetic, environmental and endocrine factors that interact and interact to form a complex network of etiological factors that cause abnormal immune responses, such as the release of inflammatory factors, and the production of.SLE by autoantibodies is initially considered to be an autoimmune disease mediated by B cells. Disease. With the development of research, T cells have been found to occur in SLE and also play a vital role in the development of.1999. A highly conserved E3 ubiquitin ligase protein, named Pellino (abbreviated Peli) protein, was found in the fruit fly for the first time. The ubiquitin ligase protein family consists of Peli-1, Peli-2, Peli-3 three. The most notable functional feature of the subtype is the multiple role in innate immunity. The latest research has found that Peli-1 plays a regulatory role in a series of cellular signaling mediated by TLR/IL-1R,.Peli-1 also participates in the activation of NF- kappa B, which is mediated by TRIF dependence. In addition, Chang has found that Peli-1 is one of the maintenance of T cell tolerance. A key regulatory factor, whose functional abnormalities may lead to T cell activation, may play an important role in the pathogenesis of autoimmune diseases such as SLE. Based on the above, this subject is the first to explore the association between the Peli-1 gene polymorphism and the susceptibility to the disease of SLE, and also to detect the expression level of Peli-1 mRNA and the susceptibility to SLE and SLE. The correlation between the same phenotype, the relationship between the Peli-1 gene and the incidence of SLE from the gene transcription and expression level. The correlation between the single nucleotide polymorphisms of the peli-1 gene and systemic lupus erythematosus (SLE) in part 1 compares the difference between the SLE patients and the difference of the peli-1rs329498, rs10496105 allele and gene frequency in the normal control. The association with the genetic susceptibility of SLE. Combined with clinical data, the relationship between peli-1rs329498, rs10496105 and its main clinical features and its laboratory indicators was analyzed. Methods a case control study was used to select 738 SLE patients and 827 healthy controls. The fluidigm192.24 gene typing technique was used to detect rs329498 in the peli-1 gene. Rs10496105 two SNP loci, analysis of its genotype, allele frequency and so on. Combined with clinical data, the relationship between gene frequency distribution and clinical manifestations was further analyzed. Results (1) the association between the polymorphism of peli-1 gene rs329498 locus and SLE, the genotype frequencies of AA, AC and CC in SLE patients were 40.8%, 44.6%, and 14.6%, respectively. There was no statistically significant difference between the groups of 36.5%, 45.5%, 18% and two groups (x 2=4.63, p=0.099). The allele comparison showed that the two groups were statistically significant (x 2=4.80, p=0.028), relatively large allele A, and small allele C would reduce the risk of SLE incidence (or= 0.851,95%ci:0.737-0.983). However, there was no statistical correlation between the genetic dominance and the recessive model. Compared with the non ln nephritis group, the A allele frequency of LN patients was higher, and the difference was statistically significant (x 2=8.18, p=0.017). The or value of LN incidence risk was 0.681 (95%ci:0.528-0.880) compared with the A allele, and the difference in the genotype frequency (cc+acversusaa) distribution of the two groups was statistically significant. .632,95%ci:0.451-0.884, p=0.007). The correlation analysis of clinical features showed that the rs329498 locus of the peli-1 gene might be related to the zygomatic erythema, and the frequency distribution of the genotypes was statistically different (x 2=6.63, p=0.036). (2) the association of the peli-1 gene rs10496105 loci with SLE was associated with the rs10496105 genotype frequency GG, Ag, in the case component. No 70%, 26.2% and 3.8%, 69.4% in the control group, 27.2% and 3.4%., and no statistical difference between the control group and the control group (x 2=0.37, p=0.832). The genetic model analysis showed that no statistical difference was found between the dominant and the recessive model cases and the control groups (P0.05). In addition, the LN group and the LN group There was no statistically significant difference in genotype distribution between non LN groups (x 2=3.11, P=0.201). The results of clinical data analysis showed that there was no statistically significant association between the rs10496105 locus and the main clinical features of the zygomatic erythema, discoid erythema, light sensitivity, oral ulcer, and arthritis (P0.05). The polymorphism of the Peli-1 rs329498 gene and SLE remains in the Chinese Han population. In addition, the rs329498 locus was also associated with lupus nephritis and zygomatic erythema. No statistical association was found between the rs10496105 gene polymorphisms and SLE. Second the correlation between the Peli-1 m RNA level and systemic lupus erythematosus was compared with those in the SLE group and the normal control group, and the wolves in SLE patients. The expression level of Peil-1 gene m RNA in Peripheral blood mononuclear cells (PBMCs) in the group of ulcer nephritis and non wolf nephritis and in the active group and non active group (mononuclear cells, PBMCs), and the relationship between the expression level and clinical characteristics, the laboratory index and the degree of disease activity. Methods a total of 31 cases of SLE patients and 30 healthy pairs were collected. Trizol method was used to extract the RNA. real-time quantitative polymerase chain reaction (Real time quantitative polymerase chain reaction, RT-PCR) to detect the Peli-1 gene expression level in PBMCs, using the rank sum test to compare the differences between each group. The relationship between the level and the Systemic lupus erythematosus disease activity index, SLEDAI. All data were statistically analyzed with SPSS 17. Results (1) the level of Peli-1 m RNA in PBMCs was compared: there was no statistical difference between the 31 cases and the 30 controls. 404, P=0.686). Compared the SLE patients into the nephritis group (11 cases) and the non nephritis group (20 cases), the results showed that there was no statistical difference between the two groups of PBMCs (Z=-0.619, P=0.536). Moreover, the Peli-1 m RNA level between the active group (19 cases) and the non active group (12 cases) had no statistical difference (Z=-0.973, 2). The correlation analysis of Peli-1 m RNA level and its clinical characteristics: the Mann-Whitney rank sum test results showed that there was no statistical significance (P0.05) between the Peli-1 m RNA levels between each group. (3) the correlation between Peli-1 m level and laboratory index in PBMCs of SLE patients: the difference between the positive group and the negative group was poor. There was no statistical significance (all P0.05). (4) the level of Peli-1 m RNA expression in PBMCs of SLE patients and SLEDAI correlation analysis: Spearman grade correlation analysis showed that there was no significant correlation between Peli-1 m in SLE patients' PBMCs and the health control group. There was no statistical difference between the Peli-1 gene m RNA expression level between the LN and the non LN groups in the dynamic group and the non active group. In addition, there was no statistical difference between the major clinical manifestations and the major laboratory features, and there was no statistically significant difference between the.SLEDAI score and the RNA expression level of the Peli-1 gene m.
【学位授予单位】:安徽医科大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:R593.241
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