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Non-randomness distribution of micro-RNAs on human chromosomes
Egyptian Journal of Medical Human Genetics ( IF 1.2 ) Pub Date : 2019-12-01 , DOI: 10.1186/s43042-019-0041-2
Fariba Boroumand , Iraj Saadat , Mostafa Saadat

Micro-RNA (miRNA) is one of the non-coding RNAs that exist in human genome. miRNAs play an important role in the expression of target genes. Several studies have indicated that organization of human genome is not random. In order to investigate the distribution of miRNAs on human chromosomes, the present study was carried out. Using the data from miRBase database, we found 1913 loci coding for miRNAs (MIRs). Human chromosome bands 1p36, 1q22, 1q24, 2q13, 2q35, 3p21, 6p21, 7q22, 8p23, 8q24, 9q22, 9q34, 11q12-q13, 12q13, 14q32, 16p13, 16q24, 17p13, 17q11, 17q21, 17q25, 19p13, 19q13, 20q13, 21p11, 22q13, and Xq26-q28 were significantly bearing higher number of MIRs. The 14q32 and 19q13 with 4.11 and 3.59 MIRs per mega-base pair, respectively, were the most MIR-richest human chromosomal bands. The number of MIRs on chromosomal bands significantly decreased as a function of distance from telomere (r = − 0.949, df = 5, P = 0.001). Our current data suggest that MIRs are not randomly distributed on human genomes.

中文翻译:

micro-RNAs在人类染色体上的非随机分布

Micro-RNA (miRNA) 是存在于人类基因组中的非编码 RNA 之一。miRNA在靶基因的表达中起重要作用。多项研究表明,人类基因组的组织不是随机的。为了研究miRNA在人类染色体上的分布,进行了本研究。使用来自 miRBase 数据库的数据,我们发现了 1913 个编码 miRNAs (MIRs) 的位点。人类染色体带1p36,1q22,1q24,2q13,2q35,3p21,6p21,7q22,8p23,染色体8q24,9q22,9q34,11q12-Q13,12q13,14q32,16p13,16q24,17p13,17q11,17q21上,17q25,19p13,19q13 、20q13、21p11、22q13 和 Xq26-q28 显着具有更高数量的 MIR。每兆碱基对分别具有 4.11 和 3.59 MIR 的 14q32 和 19q13 是最富含 MIR 的人类染色体条带。作为距端粒距离的函数,染色体条带上的 MIR 数量显着减少(r = - 0.949,df = 5,P = 0.001)。我们目前的数据表明,MIR 并非随机分布在人类基因组上。
更新日期:2019-12-01
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