mir-16 microRNA precursor family

mir-16 microRNA precursor family
mir-16
RF00254.jpg
miR-16 microRNA secondary structure and sequence conservation.
Identifiers
Symbol mir-16
Rfam RF00254
miRBase family MIPF0000006
HUGO 31545
OMIM 609704
Other data
RNA type microRNA
Domain(s) Eukaryota;

The miR-16 microRNA precursor family is a group of related small non-coding RNA genes that regulates gene expression. miR-16, miR-15, mir-195 and miR-457 are related microRNA precursor sequences from the mir-15 gene family ([1]). This microRNA family appears to be vertebrate specific and its members have been predicted or experimentally validated in a wide range of vertebrate species (MIPF0000006).

Contents

Background

The human miR-16 precursor was discovered through detailed expression profile and Karyotype analyses of patients by Calin and colleagues.[1] Karyotyping of chromosome structures from individuals with B-cell chronic lymphocytic leukaemias (B-CLL) found that more than half have alterations in th 13q14 region.[1][2] Deletions of this well characterised 1 megabase region of the genome[3][4] was also observed in approximately 50% of mantle cell lymphoma,   up to 40% of multiple myeloma,   and 60% of prostate cancers.[5] Comprehensive screenings of the region at the time did not provide consistent evidence of involvement from any of the known genes at the time.[3][4][6][7][8][9][10] Using CD5+ B-lymphocytes,[11] which is known to accumulate with B-CLL progression, the minimal region lost from 13q14 region was scrutinised for regulatory elements.[1] Publicly available sequence databases were used to identify a gene cluster which encodes the homologue to the human miR15 and miR16 from the Caenorhabditis elegans.[12][13][14]

Gene targets

In the original publication which identified the action of miR15 and miR16 in the development of B-CLL, Calin and colleagues proposed that miR16 could be the targets with imperfect base pairing for 14 genes.[1] Increased CD5+ B-lymphocytes in CLL suggests the miR16 may be involved in cellular differentiation.[1] In animal models single-stranded microRNA species act by binding to imperfect mRNA complements, typically to the 3' UTR,[15][16] although targets have also been observed in the coding sequence of the mRNA.[15][17] Downregulation of miR16 (as well as miR15) was observed in diffuse large B-cell lymphoma.[18] miR16 has been shown to bind to a nine base pair to a complementary sequence in the 3' UTR region of BCL2, which is an anti-apoptotic gene involved in an evolutionarily conserved pathway in programmed cell death.[19]

Clinical relevance

Altered expression of microRNA has been observed in cancer, [20][21][22] including malignancies of the breast, colon,[23][24]brain,[25][26] lung,[27]lymphatic system,[1][18][28][29]ovaries,[30]pancreas,[31] prostate,[32] and stomach.[33] This difference in expression levels can be used distinguish between cancerous and healthy tissues and to determine clinical prognosis.[24][34][35] The fact that pathology is associated with a different expression profile has led to the proposal that disease specific biomarkers can provide potential targets for directed clinical intervention.[36] More recently, there is evidence that in colorectal cancer that the efficacy of treatment with the monoclonal antibody cetuximab can be assessed by the expression pattern of colorectal carcinoma after therapy.[37]

miR-16 and miR-15a are clustered within a 0.5 kbp region in Chromosome 13 (13q14) in humans, a chromosomal region shown to be deleted or down-regulated in approximately more than half of B-CLL,[1] the most prevalent form of leukemia in adults.[38]Carcinogenesis is a gradual process, involving multiple genetic mutations, thus every patient with malignancy presents with a heterogeneous population of cells. The fact that mir-16 microRNA loss is observed in a large proportion of cells indicates the change occurred early in cancer development[21] and a target for therapeutic intervention.

References

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Further reading

  1. ^ Baudry A, Mouillet-Richard S, Schneider B, Launay JM, Kellermann O (2010). "miR-16 targets the serotonin transporter: a new facet for adaptive responses to antidepressants". Science 329 (5998): 1537–41. doi:10.1126/science.1193692. PMID 20847275. 
  2. ^ Zhang X, Wan G, Mlotshwa S, Vance V, Berger FG, Chen H, Lu X (2010). "Oncogenic Wip1 phosphatase is inhibited by miR-16 in the DNA damage signaling pathway". Cancer Res 70 (18): 7176–86. doi:10.1158/0008-5472.CAN-10-0697. PMC 2940956. PMID 20668064. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2940956. 
  3. ^ Maccani MA, Avissar-Whiting M, Banister CE, McGonnigal B, Padbury JF, Marsit CJ (2010). "Maternal cigarette smoking during pregnancy is associated with downregulation of miR-16, miR-21 and miR-146a in the placenta". Epigenetics 5 (7): 583–9. doi:10.4161/epi.5.7.12762. PMC 2974801. PMID 20647767. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2974801. 
  4. ^ Balakrishnan A, Stearns AT, Park PJ, Dreyfuss JM, Ashley SW, Rhoads DB, Tavakkolizadeh A (2010). "MicroRNA mir-16 is anti-proliferative in enterocytes and exhibits diurnal rhythmicity in intestinal crypts". Exp Cell Res 316 (20): 3512–21. doi:10.1016/j.yexcr.2010.07.007. PMC 2976799. PMID 20633552. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2976799. 
  5. ^ Xu F, Zhang X, Lei Y, Liu X, Liu Z, Tong T, Wang W (2010). "Loss of repression of HuR translation by miR-16 may be responsible for the elevation of HuR in human breast carcinoma". J Cell Biochem 111 (3): 727–34. doi:10.1002/jcb.22762. PMID 20626035. 
  6. ^ Liu W, Liu C, Zhu J, Shu P, Yin B, Gong Y, Qiang B, Yuan J, Peng X (2010). "MicroRNA-16 targets amyloid precursor protein to potentially modulate Alzheimer's-associated pathogenesis in SAMP8 mice". Neurobiol Aging. doi:10.1016/j.neurobiolaging.2010.04.034. PMID 20619502. 
  7. ^ Yang J, Cao Y, Sun J, Zhang Y (2009). "Curcumin reduces the expression of Bcl-2 by upregulating miR-15a and miR-16 in MCF-7 cells". Med Oncol 27 (4): 1114–8. doi:10.1007/s12032-009-9344-3. PMID 19908170. 
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  11. ^ Takeshita F, Patrawala L, Osaki M, Takahashi RU, Yamamoto Y, Kosaka N, Kawamata M, Kelnar K, Bader AG, Brown D, Ochiya T (2010). "Systemic delivery of synthetic microRNA-16 inhibits the growth of metastatic prostate tumors via downregulation of multiple cell-cycle genes". Mol Ther 18 (1): 181–7. doi:10.1038/mt.2009.207. PMC 2839211. PMID 19738602. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2839211. 
  12. ^ Lerner M, Harada M, Lovén J, Castro J, Davis Z, Oscier D, Henriksson M, Sangfelt O, Grandér D, Corcoran MM (2009). "DLEU2, frequently deleted in malignancy, functions as a critical host gene of the cell cycle inhibitory microRNAs miR-15a and miR-16-1". Exp Cell Res 315 (17): 2941–52. doi:10.1016/j.yexcr.2009.07.001. PMID 19591824. 
  13. ^ Bandi N, Zbinden S, Gugger M, Arnold M, Kocher V, Hasan L, Kappeler A, Brunner T, Vassella E (2009). "miR-15a and miR-16 are implicated in cell cycle regulation in a Rb-dependent manner and are frequently deleted or down-regulated in non-small cell lung cancer". Cancer Res 69 (13): 5553–9. doi:10.1158/0008-5472.CAN-08-4277. PMID 19549910. 
  14. ^ Aqeilan RI, Calin GA, Croce CM (2010). "miR-15a and miR-16-1 in cancer: discovery, function and future perspectives". Cell Death Differ 17 (2): 215–20. doi:10.1038/cdd.2009.69. PMID 19498445. 
  15. ^ Tsang WP, Kwok TT (2010). "Epigallocatechin gallate up-regulation of miR-16 and induction of apoptosis in human cancer cells". J Nutr Biochem 21 (2): 140–6. doi:10.1016/j.jnutbio.2008.12.003. PMID 19269153. 
  16. ^ Kaddar T, Rouault JP, Chien WW, Chebel A, Gadoux M, Salles G, Ffrench M, Magaud JP (2009). "Two new miR-16 targets: caprin-1 and HMGA1, proteins implicated in cell proliferation". Biol Cell 101 (9): 511–24. doi:10.1042/BC20080213. PMID 19250063. 
  17. ^ Guo CJ, Pan Q, Li DG, Sun H, Liu BW (2009). "miR-15b and miR-16 are implicated in activation of the rat hepatic stellate cell: An essential role for apoptosis". J Hepatol 50 (4): 766–78. doi:10.1016/j.jhep.2008.11.025. PMID 19232449. 
  18. ^ Kaddar T, Chien WW, Bertrand Y, Pages MP, Rouault JP, Salles G, Ffrench M, Magaud JP (2009). "Prognostic value of miR-16 expression in childhood acute lymphoblastic leukemia relationships to normal and malignant lymphocyte proliferation". Leuk Res 33 (9): 1217–23. doi:10.1016/j.leukres.2008.12.015. PMID 19195700. 
  19. ^ Karaa ZS, Iacovoni JS, Bastide A, Lacazette E, Touriol C, Prats H (2009). "The VEGF IRESes are differentially susceptible to translation inhibition by miR-16". RNA 15 (2): 249–54. doi:10.1261/rna.1301109. PMC 2648711. PMID 19144909. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2648711. 
  20. ^ Shanmugam N, Reddy MA, Natarajan R (2008). "Distinct roles of heterogeneous nuclear ribonuclear protein K and microRNA-16 in cyclooxygenase-2 RNA stability induced by S100b, a ligand of the receptor for advanced glycation end products". J Biol Chem 283 (52): 36221–33. doi:10.1074/jbc.M806322200. PMC 2606002. PMID 18854308. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2606002. 
  21. ^ Liu Q, Fu H, Sun F, Zhang H, Tie Y, Zhu J, Xing R, Sun Z, Zheng X (2008). "miR-16 family induces cell cycle arrest by regulating multiple cell cycle genes". Nucleic Acids Res 36 (16): 5391–404. doi:10.1093/nar/gkn522. PMC 2532718. PMID 18701644. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2532718. 
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