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Non-coding RNA in the species Homo sapiens
MALAT1 (Metastasis Associated Lung Adenocarcinoma Transcript 1 ) also known as NEAT2 (Nuclear-Enriched Abundant Transcript 2 ) is an infrequently spliced long non-coding RNA , which is highly conserved amongst mammals and highly expressed in the nucleus .[ 3] It regulates the expression of metastasis -associated genes .[ 4] It also positively regulates cell motility via the transcriptional and/or post-transcriptional regulation of motility-related genes.[ 5] MALAT1 may play a role in temperature-dependent sex determination in the Red-eared slider turtle (Trachemys scripta ).[ 6]
Expression in alcoholic brains [ edit ]
Transcripts of MALAT1 are significantly increased in the cerebellum of human alcoholics, as well as in similar regions of rat brains after the withdrawal of ethanol vapours. This alcohol-induced upregulation of MALAT1 may be responsible for differential expression of a number of proteins which contribute to ethanol tolerance and dependency in humans.[ 7]
Prognostic potential in cancer [ edit ]
Elevated MALAT1 expression is correlated with poor overall survival in various types of cancer, suggesting that this gene is a prognostic factor for different types of cancer.[ 8] [ 9]
^ a b c GRCh38: Ensembl release 89: ENSG00000251562 – Ensembl , May 2017
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^ Tano K, Mizuno R, Okada T, Rakwal R, Shibato J, Masuo Y, Ijiri K, Akimitsu N (November 2010). "MALAT-1 enhances cell motility of lung adenocarcinoma cells by influencing the expression of motility-related genes" . FEBS Letters . 584 (22): 4575–4580. Bibcode :2010FEBSL.584.4575T . doi :10.1016/j.febslet.2010.10.008 . PMID 20937273 . S2CID 207575862 .
^ Chojnowski JL, Braun EL (Jul 15, 2012). "An unbiased approach to identify genes involved in development in a turtle with temperature-dependent sex determination" . BMC Genomics . 13 : 308. doi :10.1186/1471-2164-13-308 . PMC 3434017 . PMID 22793670 .
^ Kryger R, Fan L, Wilce PA, Jaquet V (November 2012). "MALAT-1, a non protein-coding RNA is upregulated in the cerebellum, hippocampus and brain stem of human alcoholics". Alcohol . 46 (7): 629–634. doi :10.1016/j.alcohol.2012.04.002 . PMID 22560368 .
^ Tian X, Xu G (2015). "Clinical value of lncRNA MALAT1 as a prognostic marker in human cancer: systematic review and meta-analysis" . BMJ Open . 5 (9): e008653. doi :10.1136/bmjopen-2015-008653 . PMC 4593150 . PMID 26423854 .
^ Wei Y, Niu B (2015). "Role of MALAT1 as a Prognostic Factor for Survival in Various Cancers: A Systematic Review of the Literature with Meta-Analysis" . Disease Markers . 2015 : 164635. doi :10.1155/2015/164635 . PMC 4572489 . PMID 26420912 . This article incorporates text from this source, which is available under the CC BY 4.0 license.
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