mir-103/107 microRNA precursor

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mir-103/107 microRNA precursor
Symbol mir-103
Rfam RF00129
miRBase MI0000109
miRBase family MIPF0000024
Other data
RNA type Gene; miRNA
Domain(s) Eukaryota
GO 0035195 0035068
SO 0001244
PDB structures PDBe

The miR-103 microRNA precursor (homologous to miR-107), is a short non-coding RNA gene involved in gene regulation. miR-103 and miR-107 have now been predicted or experimentally confirmed in human.[1][2]

microRNAs are transcribed as ~70 nucleotide precursors and subsequently processed by the Dicer enzyme to give a ~22 nucleotide product. In this case the mature sequence comes from the 5' arm of the precursor. The mature products are thought to have regulatory roles through complementarity to mRNA.[3]

mir-103 and mir-107 were noted as being upregulated in obese mice and were subsequently found to have a key role in insulin sensitivity. This led to a suggestion that these microRNAs represent potential targets for the treatment of type 2 diabetes.[4]

mir-103 has also been linked with chronic pain[5] and intestinal cell proliferation.[6]

Recently, miR-103-3p was shown to target the 5' untranslated region (5' UTR) of GPRC5A's mRNA in pancreatic cancer.[7] This is one of only a handful of known instances where a miRNA targets the 5' UTR of a mRNA.


  1. ^ Mourelatos Z, Dostie J, Paushkin S, et al. (2002). "miRNPs: a novel class of ribonucleoproteins containing numerous microRNAs". Genes Dev. 16 (6): 720–8. doi:10.1101/gad.974702. PMC 155365Freely accessible. PMID 11914277. 
  2. ^ "miRNA gene family: mir-103". mirBASE. University of Manchester. Archived from the original on 10 July 2012. Retrieved 5 September 2011. 
  3. ^ Ambros V (2001). "microRNAs: tiny regulators with great potential". Cell. 107 (7): 823–6. doi:10.1016/S0092-8674(01)00616-X. PMID 11779458. 
  4. ^ Trajkovski, M; Hausser, J; Soutschek, J; Bhat, B; Akin, A; Zavolan, M; Heim, MH; Stoffel, M (Jun 8, 2011). "MicroRNAs 103 and 107 regulate insulin sensitivity". Nature. 474 (7353): 649–53. doi:10.1038/nature10112. PMID 21654750. 
  5. ^ Favereaux, A; Thoumine, O; Bouali-Benazzouz, R; Roques, V; Papon, MA; Salam, SA; Drutel, G; Léger, C; Calas, A; Nagy, F; Landry, M (Jul 29, 2011). "Bidirectional integrative regulation of Cav1.2 calcium channel by microRNA miR-103: role in pain". The EMBO Journal. 30 (18): 3830–41. doi:10.1038/emboj.2011.249. PMC 3173784Freely accessible. PMID 21804529. 
  6. ^ Liao, Y; Lönnerdal, B (Sep 23, 2010). Langsley, Gordon, ed. "Global MicroRNA Characterization Reveals That miR-103 Is Involved in IGF-1 Stimulated Mouse Intestinal Cell Proliferation". PLoS ONE. 5 (9): e12976. doi:10.1371/journal.pone.0012976. PMC 2944884Freely accessible. PMID 20886090. 
  7. ^ Zhou, H; Rigoutsos, I (Jul 1, 2014). "MiR-103a-3p targets the 5′ UTR of GPRC5A in pancreatic cells". RNA. 20: 1431–9. doi:10.1261/rna.045757.114. PMC 4138326Freely accessible. PMID 24984703. 

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