Identification and characterization of a class of MALAT1 -like genomic loci
- Cold Spring Harbor Lab., Cold Spring Harbor, NY (United States); Univ. of Rochester, Rochester, NY (United States)
- Cold Spring Harbor Lab., Cold Spring Harbor, NY (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Howard Hughes Medical Institute, Ashburn, VA (United States); U.S. National Library of Medicine, Bethesda, MD (United States)
- Harvard Univ., Cambridge, MA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of North Carolina, Charlotte, NC (United States)
The MALAT1 (Metastasis-Associated Lung Adenocarcinoma Transcript 1) gene encodes a noncoding RNA that is processed into a long nuclear retained transcript (MALAT1) and a small cytoplasmic tRNA-like transcript (mascRNA). Using an RNA sequence- and structure-based covariance model, we identified more than 130 genomic loci in vertebrate genomes containing the MALAT1 3' end triple-helix structure and its immediate downstream tRNA-like structure, including 44 in the green lizard Anolis carolinensis. Structural and computational analyses revealed a co-occurrence of components of the 3' end module. MALAT1-like genes in Anolis carolinensis are highly expressed in adult testis, thus we named them testis-abundant long noncoding RNAs (tancRNAs). MALAT1-like loci also produce multiple small RNA species, including PIWI-interacting RNAs (piRNAs), from the antisense strand. The 3' ends of tancRNAs serve as potential targets for the PIWI-piRNA complex. Furthermore, we have identified an evolutionarily conserved class of long noncoding RNAs (lncRNAs) with similar structural constraints, post-transcriptional processing, and subcellular localization and a distinct function in spermatocytes.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1364397
- Journal Information:
- Cell Reports, Journal Name: Cell Reports Journal Issue: 8 Vol. 19; ISSN 2211-1247
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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