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Expression and regulation of intergenic long noncoding RNAs during T cell development and differentiation
Gangqing Hu1, Qingsong Tang, Suveena Sharma
11] Systems Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA. [2].
Nature Immunology
|September 24, 2013
Summary
This study identifies 1,524 long noncoding RNA (lncRNA) clusters in T cells, revealing dynamic, cell-specific expression patterns critical for immune regulation and T cell differentiation.
Area of Science:
- Immunology
- Genomics
- Molecular Biology
Background:
- Long noncoding RNAs (lncRNAs) are implicated in gene regulation across tissues.
- Limited understanding exists regarding lncRNA transcriptomes within T cell lineages.
Purpose of the Study:
- To characterize lncRNA expression profiles during T cell differentiation.
- To investigate the functional roles of lncRNAs in T cell immunoregulatory functions.
Main Methods:
- Analysis of 1,524 lncRNA clusters across 42 diverse T cell samples.
- Examination of lncRNA expression dynamics during T cell development.
- Identification of transcription factor binding and regulatory networks.
Main Results:
- Discovered dynamic and cell-specific lncRNA expression patterns during T cell differentiation.
- Localized lncRNAs to genomic regions associated with immunoregulatory genes.
- Found regulation of lncRNAs by key transcription factors (T-bet, GATA-3, STAT4, STAT6).
- Identified LincR-Ccr2-5'AS and GATA-3 as crucial for TH2 cell-specific gene expression and migration.
Conclusions:
- lncRNAs play significant, cell-specific roles in T cell differentiation and immune function.
- Specific lncRNAs, like LincR-Ccr2-5'AS, are integral to subset-specific regulatory circuits and cell behavior.
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