GAS5

Associate Editor(s)-in-Chief:  Henry A. Hoff

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Growth arrest-specific 5 is a non-protein coding RNA that in humans is encoded by the GAS5 gene.[1][2]

GAS5 noncoding RNA, which accumulates in growth arrested cells, acts as a decoy hormone response element for the glucocorticoid receptor (GR) and hence blocks the upregulation of gene expression by activated GR.[3][4]

A number of studies have linked GAS5 to apoptosis and it may play a role in the progression of some types of cancer.[5][6][7]

The GAS5 introns host several snoRNA sequences, including SNORD81, SNORD47, SNORD80, SNORD79, SNORD78, SNORD44, SNORD77, SNORD76, SNORD75 and SNORD74.[2][8][9][10] These intronic sequences are more conserved than the exons of the host gene, these sorts of genes are often called "inside-out genes".[11]

It was recently discovered that the nonsense-mediated degradation pathway can regulate the function of the GAS5 in mammalian cells.[12]

## Contents

* 1 Transcriptions
* 2 References
* 3 Further reading
* 4 Acknowledgements

## Transcriptions[edit | edit source]

GeneID: 60674 GAS5 growth arrest specific 5 (non-protein coding). "This gene produces a spliced long non-coding RNA and is a member of the 5' terminal oligo-pyrimidine class of genes. It is a small nucleolar RNA host gene, containing multiple C/D box snoRNA genes in its introns. Part of the secondary RNA structure of the encoded transcript mimics glucocorticoid response element (GRE) which means it can bind to the DNA binding domain of the glucocorticoid receptor (nuclear receptor subfamily 3, group C, member 1). This action blocks the glucocorticoid receptor from being activated and thereby stops it from regulating the transcription of its target genes. This transcript is also thought to regulate the transcriptional activity of other receptors, such as androgen, progesterone and mineralocorticoid receptors, that can bind to its GRE mimic region. Multiple functions have been associated with this transcript, including cellular growth arrest and apoptosis. It has also been identified as a potential tumor suppressor, with its down-regulation associated with cancer in multiple different tissues."[13]

## References[edit | edit source]

1. ↑ "Entrez Gene: growth arrest-specific 5 (non-protein coding)".
2. ↑ 2.0 2.1 Smith, C. M.; Steitz, J. A. (December 1998). "Classification of gas5 as a multi-small-nucleolar-RNA (snoRNA) host gene and a member of the 5'-terminal oligopyrimidine gene family reveals common features of snoRNA host genes". Molecular and Cellular Biology. 18 (12): 6897–6909. doi:10.1128/mcb.18.12.6897. PMC 109273. PMID 9819378.
3. ↑ Kino T, Hurt DE, Ichijo T, Nader N, Chrousos GP (2010). "Noncoding RNA Gas5 Is a Growth Arrest and Starvation-Associated Repressor of the Glucocorticoid Receptor". Sci Signal. 3 (107): ra8. doi:10.1126/scisignal.2000568. PMC 2819218. PMID 20124551.
4. ↑ Garabedian MJ, Logan SK (2010). "Glucocorticoid receptor DNA binding decoy is a gas". Sci Signal. 3 (108): pe5. doi:10.1126/scisignal.3108pe5. PMID 20145207.
5. ↑ Mourtada-Maarabouni M, Pickard MR, Hedge VL, Farzaneh F, Williams GT (2009). "GAS5, a non-protein-coding RNA, controls apoptosis and is downregulated in breast cancer". Oncogene. 28 (2): 195–208. doi:10.1038/onc.2008.373. PMID 18836484.
6. ↑ Nakamura Y, Takahashi N, Kakegawa E, Yoshida K, Ito Y, Kayano H, Niitsu N, Jinnai I, Bessho M (2008). "The GAS5 (growth arrest-specific transcript 5) gene fuses to BCL6 as a result of t(1;3)(q25;q27) in a patient with B-cell lymphoma". Cancer Genet Cytogenet. 182 (2): 144–9. doi:10.1016/j.cancergencyto.2008.01.013. PMID 18406879.
7. ↑ Mourtada-Maarabouni M, Hedge VL, Kirkham L, Farzaneh F, Williams GT (2008). "Growth arrest in human T-cells is controlled by the non-coding RNA growth-arrest-specific transcript 5 (GAS5)". J Cell Sci. 121 (Pt 7): 939–46. doi:10.1242/jcs.024646. PMID 18354083.
8. ↑ Tanaka R, Satoh H, Moriyama M, Satoh K, Morishita Y, Yoshida S, Watanabe T, Nakamura Y, Mori S (2000). "Intronic U50 small-nucleolar-RNA (snoRNA) host gene of no protein-coding potential is mapped at the chromosome breakpoint t(3;6)(q27;q15) of human B-cell lymphoma". Genes Cells. 5 (4): 277–87. doi:10.1046/j.1365-2443.2000.00325.x. PMID 10792466.
9. ↑ Raho G, Barone V, Rossi D, Philipson L, Sorrentino V (2000). "The gas 5 gene shows four alternative splicing patterns without coding for a protein". Gene. 256 (1–2): 13–7. doi:10.1016/S0378-1119(00)00363-2. PMID 11054530.
10. ↑ Hirose T, Steitz JA (2001). "Position within the host intron is critical for efficient processing of box C/D snoRNAs in mammalian cells". Proc. Natl. Acad. Sci. U.S.A. 98 (23): 12914–9. doi:10.1073/pnas.231490998. PMC 60799. PMID 11606788.
11. ↑ Eddy SR (1999). "Noncoding RNA genes". Current Opinion in Genetics & Development. 9 (6): 695–9. doi:10.1016/S0959-437X(99)00022-2. PMID 10607607.
12. ↑ Tani H, Torimura M, Akimitsu N (2013). "The RNA degradation pathway regulates the function of GAS5 a non-coding RNA in mammalian cells". PLOS ONE. 8 (1): e556884. doi:10.1371/journal.pone.0055684. PMC 3559549. PMID 23383264.
13. ↑ RefSeq (12 May 2018). "GAS5 growth arrest specific 5 (non-protein coding) [ Homo sapiens (human) ]". 8600 Rockville Pike, Bethesda MD, 20894 USA: National Center for Biotechnology Information, U.S. National Library of Medicine. Retrieved 2018-05-12.

## Further reading[edit | edit source]

* Strausberg RL, Feingold EA, Grouse LH, et al. (2002). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.

## Acknowledgements[edit | edit source]

Initial content for this page in some instances came from Wikipedia.