Mir-192/215 microRNA precursor

Last updated
mir-192/215 microRNA precursor
RF00130.jpg
Predicted secondary structure and sequence conservation of mir-192
Identifiers
Symbolmir-192
Rfam RF00130
miRBase MI0000234
miRBase family MIPF0000063
Other data
RNA type Gene; miRNA
Domain(s) Eukaryota
GO GO:0035195 GO:0035068
SO SO:0001244
PDB structures PDBe

The miR-192 microRNA precursor (homologous to miR-215), is a short non-coding RNA gene involved in gene regulation. miR-192 and miR-215 have now been predicted or experimentally confirmed in mouse and 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-192 and mir-215 are thought to be positive regulators of p53, a human tumour suppressor. [4] They are also overexpressed in gastric cancer, and could be used as biomarkers or therapeutic targets. [5] It has also been suggested that mir-192 could be used as a biomarker for drug-induced liver damage. [6]

miR-215 and miR-192 are also both implicated in major depressive disorder. Small-RNA sequencing reveals upregulated expression for both miR-215 and miR-192 in the synaptosomes derived from the dorsolateral prefrontal cortex of MDD subjects. [7]

Related Research Articles

microRNA Small non-coding ribonucleic acid molecule

MicroRNA (miRNA) are small, single-stranded, non-coding RNA molecules containing 21 to 23 nucleotides. Found in plants, animals and some viruses, miRNAs are involved in RNA silencing and post-transcriptional regulation of gene expression. miRNAs base-pair to complementary sequences in mRNA molecules, then silence said mRNA molecules by one or more of the following processes:

  1. Cleavage of the mRNA strand into two pieces,
  2. Destabilization of the mRNA by shortening its poly(A) tail, or
  3. Reducing translation of the mRNA into proteins.
mir-124 microRNA precursor family

The miR-124 microRNA precursor is a small non-coding RNA molecule that has been identified in flies, nematode worms, mouse and human. The mature ~21 nucleotide microRNAs are processed from hairpin precursor sequences by the Dicer enzyme, and in this case originates from the 3' arm. miR-124 has been found to be the most abundant microRNA expressed in neuronal cells. Experiments to alter expression of miR-124 in neural cells did not appear to affect differentiation. However these results are controversial since other reports have described a role for miR-124 during neuronal differentiation.

mir-1 microRNA precursor family

The miR-1 microRNA precursor is a small micro RNA that regulates its target protein's expression in the cell. microRNAs are transcribed as ~70 nucleotide precursors and subsequently processed by the Dicer enzyme to give products at ~22 nucleotides. In this case the mature sequence comes from the 3' arm of the precursor. The mature products are thought to have regulatory roles through complementarity to mRNA. In humans there are two distinct microRNAs that share an identical mature sequence, and these are called miR-1-1 and miR-1-2.

mir-30 microRNA precursor

miR-30 microRNA precursor is a small non-coding RNA that regulates gene expression. Animal microRNAs are transcribed as pri-miRNA of varying length which in turns are processed in the nucleus by Drosha into ~70 nucleotide stem-loop precursor called pre-miRNA and subsequently processed by the Dicer enzyme to give a mature ~22 nucleotide product. In this case the mature sequence comes from both the 3' (miR-30) and 5' (mir-97-6) arms of the precursor. The products are thought to have regulatory roles through complementarity to mRNA.

The miR-34 microRNA precursor family are non-coding RNA molecules that, in mammals, give rise to three major mature miRNAs. The miR-34 family members were discovered computationally and later verified experimentally. The precursor miRNA stem-loop is processed in the cytoplasm of the cell, with the predominant miR-34 mature sequence excised from the 5' arm of the hairpin.

mir-7 microRNA precursor

This family represents the microRNA (miRNA) precursor mir-7. This miRNA has been predicted or experimentally confirmed in a wide range of species. miRNAs 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 extents of the hairpin precursors are not generally known and are estimated based on hairpin prediction. The involvement of Dicer in miRNA processing suggests a relationship with the phenomenon of RNA interference.

mir-92 microRNA precursor family

The miR-92 microRNAs are short single stranded non-protein coding RNA fragments initially discovered incorporated into an RNP complex with a proposed role of processing RNA molecules and further RNP assembly. Mir-92 has been mapped to the human genome as part of a larger cluster at chromosome 13q31.3, where it is 22 nucleotides in length but exists in the genome as part of a longer precursor sequence. There is an exact replica of the mir-92 precursor on the X chromosome. MicroRNAs are endogenous triggers of the RNAi pathway which involves several ribonucleic proteins (RNPs) dedicated to repressing mRNA molecules via translation inhibition and/or induction of mRNA cleavage. miRNAs are themselves matured from their long RNA precursors by ribonucleic proteins as part of a 2 step biogenesis mechanism involving RNA polymerase 2.

mir-96 microRNA

miR-96 microRNA precursor is a small non-coding RNA that regulates gene expression. microRNAs are transcribed as ~80 nucleotide precursors and subsequently processed by the Dicer enzyme to give a ~23 nucleotide products. 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.

mir-126

In molecular biology mir-126 is a short non-coding RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several pre- and post-transcription mechanisms.

miR-137

In molecular biology, miR-137 is a short non-coding RNA molecule that functions to regulate the expression levels of other genes by various mechanisms. miR-137 is located on human chromosome 1p22 and has been implicated to act as a tumor suppressor in several cancer types including colorectal cancer, squamous cell carcinoma and melanoma via cell cycle control.

mir-31

miR-31 has been characterised as a tumour suppressor miRNA, with its levels varying in breast cancer cells according to the metastatic state of the tumour. From its typical abundance in healthy tissue is a moderate decrease in non-metastatic breast cancer cell lines, and levels are almost completely absent in mouse and human metastatic breast cancer cell lines. Mir-31-5p has also been observed upregulated in Zinc Deficient rats compared to normal in ESCC and in other types of cancers when using this animal model. There has also been observed a strong encapsulation of tumour cells expressing miR-31, as well as a reduced cell survival rate. miR-31's antimetastatic effects therefore make it a potential therapeutic target for breast cancer. However, these two papers were formally retracted by the authors in 2015.

mir-433

In molecular biology, mir-433 is a short non-coding RNA molecule. MicroRNAs (miRNAs) function as posttranscriptional regulators of expression levels of other genes by several mechanisms. They play roles in development, metabolism and carcinogenesis.

miR-134 Family of microRNA precursors

miR-134 is a family of microRNA precursors found in mammals, including humans. MicroRNAs are typically transcribed as ~70 nucleotide precursors and subsequently processed by the Dicer enzyme to give a ~22 nucleotide product. The excised region or, mature product, of the miR-134 precursor is the microRNA mir-134.

miR-338 Family of brain-specific microRNA precursors

miR-338 is a family of brain-specific microRNA precursors found in mammals, including humans. The ~22 nucleotide mature miRNA sequence is excised from the precursor hairpin by the enzyme Dicer. This sequence then associates with RISC which effects RNA interference.

miR-146 Family of microRNA precursors

miR-146 is a family of microRNA precursors found in mammals, including humans. The ~22 nucleotide mature miRNA sequence is excised from the precursor hairpin by the enzyme Dicer. This sequence then associates with RISC which effects RNA interference.

In molecular biology mir-331 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.

In molecular biology mir-652 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms, with expression levels of miRNAs and respective target mRNAs negatively correlated.

In molecular biology mir-663 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.

In molecular biology mir-885 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.

<span class="mw-page-title-main">MIR194-1</span> Non-coding RNA in the species Homo sapiens

MicroRNA 194-1 is a non-coding RNA that in humans is encoded by the MIR194-1 gene.

References

  1. ↑ Lagos-Quintana M, Rauhut R, Meyer J, Borkhardt A, Tuschl T (Feb 2003). "New microRNAs from mouse and human". RNA. 9 (2): 175–9. doi:10.1261/rna.2146903. PMC   1370382 . PMID   12554859.
  2. ↑ "miRNA gene family: mir-192". mirBASE. University of Manchester. Archived from the original on September 29, 2007.
  3. ↑ Ambros V (Dec 2001). "microRNAs: tiny regulators with great potential". Cell. 107 (7): 823–6. doi: 10.1016/S0092-8674(01)00616-X . PMID   11779458.
  4. ↑ Pichiorri F, Suh SS, Rocci A, De Luca L, Taccioli C, Santhanam R, Zhou W, Benson DM, Hofmainster C, Alder H, Garofalo M, Di Leva G, Volinia S, Lin HJ, Perrotti D, Kuehl M, Aqeilan RI, Palumbo A, Croce CM (Oct 2010). "Downregulation of p53-inducible microRNAs 192, 194, and 215 impairs the p53/MDM2 autoregulatory loop in multiple myeloma development". Cancer Cell. 18 (4): 367–81. doi:10.1016/j.ccr.2010.09.005. PMC   3561766 . PMID   20951946.
  5. ↑ Jin Z, Selaru FM, Cheng Y, Kan T, Agarwal R, Mori Y, Olaru AV, Yang J, David S, Hamilton JP, Abraham JM, Harmon J, Duncan M, Montgomery EA, Meltzer SJ (Mar 2011). "MicroRNA-192 and -215 are upregulated in human gastric cancer in vivo and suppress ALCAM expression in vitro". Oncogene. 30 (13): 1577–85. doi:10.1038/onc.2010.534. PMC   4586057 . PMID   21119604.
  6. ↑ Wang K, Zhang S, Marzolf B, Troisch P, Brightman A, Hu Z, Hood LE, Galas DJ (Mar 2009). "Circulating microRNAs, potential biomarkers for drug-induced liver injury". Proceedings of the National Academy of Sciences of the United States of America. 106 (11): 4402–7. doi: 10.1073/pnas.0813371106 . PMC   2657429 . PMID   19246379.
  7. ↑ Yoshino Y, Roy B, Dwivedi Y (Apr 2021). "Differential and unique patterns of synaptic miRNA expression in dorsolateral prefrontal cortex of depressed subjects". Neuropsychopharmacology. 46 (5): 900–910. doi: 10.1038/s41386-020-00861-y . PMC   8115313 . PMID   32919404.
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