IL-10 -1082A/G, -592C/A, and -819T/C polymorphisms in association with lung cancer susceptibility: a meta-analysis

Organelle Specific Macrophage Engineered Vesicles Differentially Reprogram Macrophage Polarization

Tumor-associated macrophages (TAMs) represent the majority of the immune cells present in the tumor microenvironment. These macrophages exhibit an anti-inflammatory (M2)-like physiological state and execute immune-suppressive and tumor-supporting properties. With TAMs being plastic, there is a growing interest in reprogramming them toward a pro-inflammatory (M1)-like phenotype that exhibits anti-tumoral properties. Recent studies have demonstrated that both engineered vesicles derived from macrophages and endogenous extracellular vesicles produced by macrophages can be programmed to alter macrophage phenotype. Here it is demonstrated that pro-inflammatory macrophage-engineered subcellular vesicles (MEVs) have differential properties based on their organelle of origin. Endoplasmic reticulum specific MEVs (erMEVs) treated M2 macrophages exhibit enhanced pro-inflammatory cytokine production compared to plasma membrane specific MEVs (pmMEVs) treated M2 macrophages. In addition, under in vitro co-culture conditions, erMEVs elicit superior efficacy in suppressing the viability of cancer cells compared to the same concentration of pmMEVs. Furthermore, erMEVs and pmMEVs maintain differences in their membrane proteins, that regulate the repolarization efficacy of M2 macrophages toward an M1-like phenotype. In addition, The M2 to M1 repolarizing efficacy of MEVs can be altered by changing the activity of the membrane proteins present on erMEVs or pmMEVs.

Association of IL-10 gene promoter polymorphisms with susceptibility to pseudoexfoliation syndrome, pseudoexfoliative and primary open-angle glaucoma

Background

The involvement of cytokines in pathogenesis of pseudoexfoliation syndrome and glaucoma has been demonstrated in several studies. The aim of the present study was to explore the association between three promoter polymorphisms −592C/A (rs1800872), − 819C/T (rs1800871) and -1082A/G (rs1800896) of interleukin 10 (IL-10) gene with susceptibility to pseudoexfoliation syndrome (PEX), pseudoexfoliative glaucoma (PEXG), and primary open-angle glaucoma (POAG).

Methods

In this study, 114 PEX, 118 PEXG, 114 POAG patients and 126 healthy individuals from Iranian population were participated. Detailed ophthalmic examinations by an ophthalmologist including slit-lamp bio-microscopic examination, dilated examination of the lens, gonioscopy, and funduscopy were carried out on patients and controls. Genomic DNA was extracted from the blood samples and ARMS–PCR was performed to detect promoter polymorphisms of IL-10.

Results

In all three SNPs studied, there was a significant difference in the genotype distribution between patients and control subjects. Results revealed that the AA genotype of IL-10 -592C/A SNP is associated with PEX. However, TT genotype of −819C/T and AA genotype of -1082A/G SNP are significantly associated with susceptibility to either PEX or PEXG and POAG disorders. Furthermore, the ACC haplotype containing the IL-10 -1082A allele was associated with PEX (P = 0.02, OR = 5.76, 95% CI = 5.17–24.49), PEXG (P = 0.006, OR = 7.54, 95% CI = 6.62–30.76) and POAG (P = 0.003, OR = 8.11, 95% CI = 7.13–33.15).

Conclusions

Our results demonstrated that IL-10 gene promoter polymorphisms are associated with susceptibility to PEX, PEXG and POAG in Iranian population. Considering the fact that IL-10 polymorphisms are associated with various IL-10 expressions, further research is needed to explain its involvement in these disorders and the formation of extracellular fibrillar amyloid deposits in PEX and PEXG.

Genetic polymorphisms of IL-10, IL-18 and IL12B are associated with risk of non-small cell lung cancer in a Chinese Han population

PURPOSE

IL-10, IL-18 and IL-12 are reported to participate in the inflammation process. The potential influences of IL-10, IL-18 and IL-12 polymorphisms on non-small cell lung cancer (NSCLC) risk were explored in this study.

METHODS

Six candidate SNPs from 500 NSCLC patients and 500 controls were genotyped. The correlation between the SNPs and NSCLC risk was evaluated by logistic regression analysis.

RESULTS

Comparisons of the allele and genotype frequencies showed that five SNPs were correlated with NSCLC risk. The minor allele 'G' of IL-18 rs5744256 and rs1834481 and IL-10 rs3021094 was correlated with a decreased risk of NSCLC (p < 0.05). In contrast, the minor allele 'T' of IL-18 rs5744224 and the minor allele 'G' of IL-12B rs3212227 were correlated with an increased risk of NSCLC (p < 0.05). By genetic model analysis, we found that rs5744256 and rs1834481 were associated with a decreased risk of NSCLC under dominant and log-additive models (p < 0.05). Rs3021094 was correlated with a decreased risk of NSCLC under all three models (p < 0.05). In contrast, rs5744224 was associated with an increased risk of NSCLC under the recessive model (p = 0.005), and rs3212227 was associated with an increased risk of NSCLC under all three models (p < 0.05). Finally, the GGA haplotype of rs5744256, rs1834481 and rs5744224 and the GT haplotype of rs3021094 and rs3790622 were associated with a decreased risk of NSCLC (p < 0.05).

CONCLUSION

Our results provided new candidate SNPs for the prediction and prevention of NSCLC.

Meta-Analysis of the Relation Between IL10 Promoter Polymorphisms and Autoimmune Liver Disease Risk

BACKGROUND

Single nucleotide polymorphisms of the IL10 gene have been linked to the occurrence of autoimmune liver disease.

METHODS

We performed a meta-analysis to assess the association between three IL10 promoter polymorphisms (rs1800896, rs1800871, and rs1800872) and the risk of autoimmune hepatitis, primary biliary cholangitis, and primary sclerosing cholangitis.

RESULTS

In total, 1420 articles were initially identified through database retrieval. After screening, seven eligible articles were ultimately included in the meta-analysis. A fixed-effect model was used for all Mantel-Haenszel statistics due to the absence of large between-study heterogeneity (all I² < 50%, p > 0.1). No association between any of the studied polymorphisms and risk of autoimmune liver disease was detected in the allele, homozygote, heterozygote, dominant, recessive, or carrier genetic models (p_association > 0.05). Potential publication bias was excluded using Begg's and Egger's tests. Similar negative results were observed in subgroup analyses and in an analysis of the three haplotypes of rs1800896/rs1800871/rs1800872 (G/C/C, A/C/C, and A/T/A).

CONCLUSION

Our meta-analysis strongly suggests that the IL10 rs1800896, rs1800871, and rs1800872 polymorphisms are not associated with the risk of autoimmune liver disease.