小RNAsmall RNA,簡稱sRNA)泛指长度小于200个核苷酸(nt)的RNA分子,多為非编码RNA(ncRNA)[1][2]真核生物中此類RNA經常可與Ago等蛋白結合以進行RNA干擾,抑制其他基因mRNA的表現。小RNA的種類包括微小RNA(miRNA)、小干扰RNA(siRNA,包含tasiRNA[3])、piwi作用RNA(piRNA,包含rasiRNA[4][5]小核RNA(snRNA)、小核仁RNA(snoRNA)[6]小卡哈氏體RNA(scaRNA)、tsRNA(衍生自tRNA的小RNA)和srRNA(衍生自rRNA的小RNA)[7]等。現有miRNA定序英语MicroRNA sequencing次世代定序英语next-generation sequencing技術專門用來偵測細胞中的小RNA[8][9]。許多小RNA與數種癌症等疾病有關[10]

miRNA与目標mRNA結合以達成RNA干擾

細菌也具有許多小RNA(細菌小RNA),可與其他RNA或蛋白質結合,有調控基因表現,代謝、感染毒力、對環境反應與影響細胞結構等諸多功能[11][12]

参考资料

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  3. ^ Vazquez F, Vaucheret H, Rajagopalan R, Lepers C, Gasciolli V, Mallory AC, Hilbert JL, Bartel DP, Crété P. Endogenous trans-acting siRNAs regulate the accumulation of Arabidopsis mRNAs. Mol. Cell. October 2004, 16 (1): 69–79. PMID 15469823. doi:10.1016/j.molcel.2004.09.028. 
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  5. ^ Mei, Yuping; Wang, Yuyan; Kumari, Priti; Shetty, Amol Carl; Clark, David; Gable, Tyler; MacKerell, Alexander D.; Ma, Mark Z.; Weber, David J.; Yang, Austin J.; Edelman, Martin J.; Mao, Li. A piRNA-like small RNA interacts with and modulates p-ERM proteins in human somatic cells. Nature Communications. 2015, 6 (1). ISSN 2041-1723. doi:10.1038/ncomms8316. 
  6. ^ Morgado, Lionel. Diversity and types of small RNA: 37–47. 2020. doi:10.1016/B978-0-12-817112-7.00002-X. 
  7. ^ Lambert M, Benmoussa A, Provost P. Small Non-Coding RNAs Derived From Eukaryotic Ribosomal RNA.. Noncoding RNA. 2019, 5 (1). PMC 6468398 . PMID 30720712. doi:10.3390/ncrna5010016. 
  8. ^ Lu, C; Tej, SS; Luo, S; Haudenschild, CD; Meyers, BC; Green, PJ. Elucidation of the small RNA component of the transcriptome.. Science. Sep 2, 2005, 309 (5740): 1567–9. PMID 16141074. doi:10.1126/science.1114112. 
  9. ^ Ruby, J. Graham; Jan, Calvin; Player, Christopher; Axtell, Michael J.; Lee, William; Nusbaum, Chad; Ge, Hui; Bartel, David P. Large-Scale Sequencing Reveals 21U-RNAs and Additional MicroRNAs and Endogenous siRNAs in C. elegans. Cell. 2006, 127 (6): 1193–1207. ISSN 0092-8674. PMID 17174894. doi:10.1016/j.cell.2006.10.040. 
  10. ^ Wu, Qian; Lu, Zuhong; Li, Hailing; Lu, Jiafeng; Guo, Li; Ge, Qinyu. Next-Generation Sequencing of MicroRNAs for Breast Cancer Detection. Journal of Biomedicine and Biotechnology. 2011, 2011: 1–7. ISSN 1110-7243. PMC 3118289 . PMID 21716661. doi:10.1155/2011/597145. 
  11. ^ Vogel J. A rough guide to the non-coding RNA world of Salmonella. Mol. Microbiol. January 2009, 71 (1): 1–11. PMID 19007416. doi:10.1111/j.1365-2958.2008.06505.x. 
  12. ^ Felden, Brice; Vandenesch, François; Bouloc, Philippe; Romby, Pascale. The Staphylococcus aureus RNome and Its Commitment to Virulence. PLoS Pathogens. 2011-03-10, 7 (3): e1002006. ISSN 1553-7366. PMC 3053349 . PMID 21423670. doi:10.1371/journal.ppat.1002006.