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Comparative Profiling of MicroRNAs Reveals the Underlying Toxicological Mechanism in Mice Testis Following Carbon Ion Radiation

机译:MicroRNA的比较分析揭示了碳离子辐射后小鼠睾丸的潜在毒理学机制。

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摘要

This study investigated the toxicity of heavy ion radiation to mice testis by microRNA (miRNA) sequencing and bioinformatics analyses. Testicular indices and histology were measured following enterocoelia irradiation with a 2 Gy carbon ion beam, with the testes exhibiting the most serious injuries at 4 weeks after carbon ion radiation (CIR) exposure. Illumina sequencing technology was used to sequence small RNA libraries of the control and irradiated groups at 4 weeks after CIR. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses implicated differential miRNAs in the regulation of target genes involved in metabolism, development, and reproduction. Here, 8 miRNAs, including miR-34c-5p, miR-138, and 6 let-7 miRNA family members previously reported in testis after radiation, were analyzed by quantitative reverse transcription-polymerase chain reaction (qRT-PCR) to validate miRNA sequencing data. The differentially expressed miRNAs described here provided a novel perspective for the role of miRNAs in testis toxicity following CIR.
机译:这项研究通过microRNA(miRNA)测序和生物信息学分析研究了重离子辐射对小鼠睾丸的毒性。在用2 Gy碳离子束辐照肠球菌后,测量睾丸指数和组织学,在暴露于碳离子辐射(CIR)后4周,睾丸表现出最严重的损伤。 CIR后第4周,使用Illumina测序技术对对照组和受辐照组的小RNA文库进行测序。 《基因本体论》和《京都议定书》的《基因与基因组百科全书》途径分析了涉及到的miRNA在参与代谢,发育和繁殖的靶基因调控中的作用。在此,通过定量逆转录聚合酶链反应(qRT-PCR)分析了先前在放射后睾丸中报告的8个miRNA,包括miR-34c-5p,miR-138和6个let-7 miRNA家族成员,以验证miRNA测序数据。此处描述的差异表达的miRNA为CIR后miRNA在睾丸毒性中的作用提供了新的视角。

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