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Malat1 affects transcription and splicing through distinct pathways in mouse embryonic stem cells
Morteza Aslanzadeh1, Laura Stanicek1, Marcel Tarbier2
1Science for Life Laboratory, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Sweden.
NAR Genomics and Bioinformatics
|May 7, 2024
Summary
This study explores the function of Malat1, a long noncoding RNA, in mouse embryonic stem cells. Malat1 knockdown disrupts gene regulation and RNA splicing, impacting cell division and RNA processing pathways.
Area of Science:
- Stem cell biology
- Molecular genetics
- Noncoding RNA research
Background:
- Long noncoding RNA Malat1 is crucial in gene regulation and cancer metastasis.
- Its specific role in stem cell function remains largely uncharacterized.
Purpose of the Study:
- To investigate the functional role of Malat1 in mouse embryonic stem cells.
- To elucidate the mechanisms by which Malat1 influences gene expression and RNA splicing.
Main Methods:
- Nuclear knockdown of Malat1 in mouse embryonic stem cells.
- Transcriptome-wide gene expression and splicing analysis.
- Functional genomics and chromatin mark analysis.
Main Results:
- Malat1 knockdown led to deregulation of 320 genes and aberrant splicing of 90 transcripts.
- Malat1 interacts with gene bodies and aberrantly spliced transcripts, localizing upstream of downregulated genes.
- Affected genes are involved in chromatid dynamics, mitosis, and RNA processing.
Conclusions:
- Malat1 plays a significant role in regulating gene transcription and RNA splicing in embryonic stem cells.
- It influences distinct pathways controlling cell division and RNA metabolism.
- Findings provide insights into Malat1's function beyond cancer metastasis.
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