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Circulating LncRNA expression profiling of Hashimoto's Thyroiditis

ABSTRACT: Circulating LncRNA expression profiling of Hashimoto's Thyroiditis

PROVIDER: PRJNA658064 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12476552_1.fastq.gz	Fastqsanger.gz
	SRR12476552_2.fastq.gz	Fastqsanger.gz
	SRR12476553_1.fastq.gz	Fastqsanger.gz
	SRR12476553_2.fastq.gz	Fastqsanger.gz
	SRR12476554_1.fastq.gz	Fastqsanger.gz

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Circulating microRNA expression profiling of Hashimoto's Thyroiditis

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Project description:NGS was performed to detect human miRNAs. We found many upregulated and downregulated miRNAs in HT patients. A total of 1310 dysregulated miRNAs were identified in PBMCs from HT patients and healthy volunteers, of which 659 were upregulated and 651 were Downregulated. Among them, a total of 655 miRNAs, 331 upregulated and 324 downregulated.

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Project description:Long noncoding RNAs (lncRNAs) have been shown to play a significant role in cancer biology. The aim of this study was to determine roles of lncRNAs in differences of clinical features related to the of papillary thyroid carcinoma (PTC) patients with or without Hashimoto's thyroiditis (HT). In the present study, we detected the differentially expressed lncRNAs in tumor tissues of PTC with or without HT by lncRNA microarrays. qRT-PCR, cell viability assay, cell cycle analysis and bioinformatics tools were used to verify and analyze the data. We found that 1031 lncRNAs and 1338 mRNAs were abnormally expressed in 10 tissue samples of PTC complicated with HT compared to pure PTC. Gene Ontology and pathway analyses of the mRNAs suggested that several biological processes and pathways, especially immune system processes, were promoted in PTC complicated with HT. Twenty lncRNAs were verified in 31 PTC complicated with HT and 64 pure PTC specimens using qRT-PCR, and the results were consistent with the microarrays data. Specifically, ENST00000452578, a down-regulated lncRNA in PTC complicated with HT, was negatively correlated with tumor size. Cell viability assay revealed that ENST00000452578 could inhibit cell proliferation. Co-expression analysis revealed that PPM1H, an mRNA regulated by ENST00000452578, may play an important role in cell cycle arrest. Our results indicate that lncRNAs and mRNAs plays an important role in the different clinical characteristics of PTC patients with or without HT, which might provide new insight from the perspective of RNA into the understanding of the cancers.

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Project description:MicroRNAs (miRNAs) have emerged as key regulators of cellular processes by suppressing target mRNAs at the posttranscriptional level. However, little is known regarding the expression of miRNAs in peripheral blood mononuclear cells (PBMCs) from Hashimoto's thyroiditis (HT) patients. Therefore, 38 HT patients and 36 healthy volunteers were enrolled in this study to identify HT-mediated changes in miRNA expression. Over 1,000 dysregulated miRNAs and their biological functions in the HT patients were identified. Among them, miR-125a-5p expression was upregulated and inversely correlated with low levels of MAF, a transcription factor that inhibits Th1 cells activity and the production of IFN-γ. Luciferase assay results demonstrated that MAF is a direct target gene of miR-125a-5p. Moreover, the proportion of circulating Th1 cells and the transcript levels of IFN-γ were increased in the HT patients. MiR-125a-5p expression positively correlated with the proportion of circulating Th1 cells and the serum concentrations of anti-thyroperoxidase antibodies in the HT patients. Interestingly, knockdown of miR-125a-5p in CD4+ T cells resulted in an elevated level of MAF but decreased the proportion of Th1 cells and the transcript level of IFN-γ in vitro. Furthermore, upregulated miR-125a-5p and IFN-γ transcript levels and downregulated MAF expression were detected in thyroid tissues from HT patients. Receiver operating characteristic (ROC) curves suggested that miR-125a-5p has a crucial role in the HT. Our results demonstrate that the elevated levels of miR-125a-5p contribute to the Th1 cells response in the HT patients and may be involved in the pathogenesis of HT.

| S-EPMC7300231 | biostudies-literature

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