mir-221
Conserved secondary structure of mir-221
Identifiers
Symbolmir-221
RfamRF00651
miRBase familyMIPF0000051
HGNC31601
OMIM300568
Other data
RNA typemicroRNA
Domain(s)Eukaryota; Vertebrata;
PDB structuresPDBe

In molecular biology, mir-221 microRNA (and its paralogue, mir-222) is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.

mir-221 is an oncogenic microRNA.[1] It targets CD117, which then prevents cell migration and proliferation in endothelial cells.[2][3] miR-221 is known as an anti angiogenic miRNA.[4][5] Recent important studies have reported that miR-221 is also involved in induction of angiogenesis.[6][7][8] RNA induced Silencing Complex (RISC) proteins SND1 and AEG-1 induces miR-221 expression in Liver cancer.[9] In liver cancer miR-221 induces the tumor angiogenesis.[6] miR-221 detection in human faeces can be a non-invasive screening marker for colorectal cancer.[10]

miR-221 has been identified as playing a role in androgenetic alopecia.[11]

See also

References

  1. Pang, Y; Young, CY; Yuan, H (15 June 2010). "MicroRNAs and prostate cancer". Acta Biochimica et Biophysica Sinica. 42 (6): 363–369. doi:10.1093/abbs/gmq038. PMID 20539944.
  2. Urbich, C; Kuehbacher, A; Dimmeler, S (1 September 2008). "Role of microRNAs in vascular diseases, inflammation, and angiogenesis". Cardiovascular Research. 79 (4): 581–588. doi:10.1093/cvr/cvn156. PMID 18550634.
  3. Vasilatou, D; Papageorgiou, S; Pappa, V; Papageorgiou, E; Dervenoulas, J (1 January 2010). "The role of microRNAs in normal and malignant hematopoiesis". European Journal of Haematology. 84 (1): 1–16. doi:10.1111/j.1600-0609.2009.01348.x. PMID 19744129. S2CID 46395419.
  4. Kuehbacher A, Urbich C, Dimmeler S (2008). "Targeting microRNA expression to regulate angiogenesis". Trends Pharmacol Sci. 29 (1): 12–15. doi:10.1016/j.tips.2007.10.014. PMID 18068232.
  5. Urbich C, Kuehbacher A, Dimmeler S (2008). "Role of microRNAs in vascular diseases, inflammation, and angiogenesis". Cardiovasc Res. 79 (4): 581–588. doi:10.1093/cvr/cvn156. PMID 18550634.
  6. 1 2 Santhekadur PK, Das SK, Gredler R, Chen D, Srivastava J, Robertson C, Baldwin AS, Fisher PB, Sarkar D (2012). "Multifunction protein staphylococcal nuclease domain containing 1 (SND1) promotes tumor angiogenesis in human hepatocellular carcinoma through novel pathway that involves nuclear factor κB and miR-221". J Biol Chem. 287 (17): 13952–13958. doi:10.1074/jbc.M111.321646. PMC 3340184. PMID 22396537.
  7. Nicoli S, Knyphausen CP, Zhu LJ, Lakshmanan A, Lawson ND (2012). "miR-221 is required for endothelial tip cell behaviors during vascular development". Dev Cell. 22 (2): 418–429. doi:10.1016/j.devcel.2012.01.008. PMC 3285411. PMID 22340502.
  8. Le Bot, Nathalie (2 April 2012). "MicroRNAs in angiogenesis". Nat. Cell Biol. 14 (4): 342. doi:10.1038/ncb2484. S2CID 45572115.
  9. Yoo BK, Santhekadur PK, Gredler R, Chen D, Emdad L, Bhutia S, Pannell L, Fisher PB, Sarkar D (2011). "Increased RNA-induced silencing complex (RISC) activity contributes to hepatocellular carcinoma". Hepatology. 53 (5): 1538–1548. doi:10.1002/hep.24216. PMC 3081619. PMID 21520169.
  10. Yau, T. O.; Wu, C. W.; Dong, Y.; Tang, C.-M.; Ng, S. S. M.; Chan, F. K. L.; Sung, J. J. Y.; Yu, J. (28 October 2014). "microRNA-221 and microRNA-18a identification in stool as potential biomarkers for the non-invasive diagnosis of colorectal carcinoma". British Journal of Cancer. 111 (9): 1765–1771. doi:10.1038/bjc.2014.484. ISSN 0007-0920. PMC 4453736. PMID 25233396.
  11. Li K, Sun Y, Liu S, Zhou Y, Qu Q, Wang G, Wang J, Chen R, Fan Z, Liu B, Li Y, Mao X, Hu Z, Miao Y. The AR/miR-221/IGF-1 pathway mediates the pathogenesis of androgenetic alopecia. Int J Biol Sci. 2023 Jun 26;19(11):3307-3323. doi: 10.7150/ijbs.80481. PMID: 37496996; PMCID: PMC10367565.

Further reading

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