Abstract
The study of long noncoding RNAs (lncRNAs) is still in its infancy with more putative RNAs identified than those with ascribed functions. Defined as transcripts that are longer than 200 nucleotides without a coding sequence, their numbers are on the rise and may well challenge protein coding transcripts in number and diversity. lncRNAs are often expressed at low levels and their sequences are frequently poorly conserved, making it unclear if they are transcriptional noise or bonafide effectors. Despite these limitations, inroads into their functions are being made and it is clear they make a contribution in regulating all aspects of biology. The early verdict on their activity, however, suggests the majority function as chromatin modifiers. A good proportion show a connection to disease highlighting their importance and the need to determine their function. The focus of this review is on lncRNAs which influence developmental processes which in itself covers a large range of known activities.
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Abbreviations
- BRD4:
-
Bromodomain protein 4
- CDK7:
-
Cyclin dependent kinase 7
- CoREST:
-
Corepressor of RE1 silencing transcription factor
- CTD:
-
C-terminal domain
- DCC:
-
Dosage compensation complex
- DNA:
-
Deoxyribonucleic acid
- HOTAIR:
-
HOX antisense intergenic RNA
- HOTTIP:
-
HOXA transcript at the distal tip
- lncRNAs:
-
Long noncoding RNAs
- mRNA:
-
Messenger RNA
- ORF:
-
Open reading frame
- P-TEFb:
-
Positive transcription elongation factor b
- PcG:
-
Polycomb group
- PRC2:
-
Polycomb repressive complex 2
- PRE:
-
Polycomb response elements
- RNA:
-
Ribonucleic acid
- RNAP II:
-
RNA polymerase II
- STAU1:
-
Staufen 1 protein
- TINCR:
-
Terminal differentiation-induced ncRNA
- TrxG:
-
Trithorax group
- Xist:
-
X-inactive specific transcript
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Acknowledgments
I would like to thank the Biomedical Sciences Department, College of Medicine at Florida State University for the financial support and the members of my lab for comments on the manuscript.
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Horabin, J.I. Long noncoding RNAs as metazoan developmental regulators. Chromosome Res 21, 673–684 (2013). https://doi.org/10.1007/s10577-013-9382-8
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DOI: https://doi.org/10.1007/s10577-013-9382-8