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Inter-organellar communication by a mitochondrial tRNA regulates nuclear metabolic transcription

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE213173 | GEO | 2023/07/01

REPOSITORIES: GEO

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Inter-organellar communication by a mitochondrial tRNA regulates nuclear metabolic transcription (RNA-Seq)

Project description:To assess transcriptomic changes that occur upon mito-tRNA Asparagine inhibition, MDA-MB-231 cells were transfected with either a non-targeting control locked nucleic acid (LNA), two independent LNAs targeting mito-tRNA Asparagine, or an LNA against mito-tRNA Lysine.

2023-07-01 | GSE213171 | GEO

Inter-organellar communication by a mitochondrial tRNA regulates nuclear metabolic transcription (GRO-Seq and CUT&RUN)

Project description:To assess changes in HDAC2 genomic occupancy an transcription rate that occur upon mito-tRNA Asparagine inhibition, MDA-MB-231 cells were transfected with either a non-targeting control locked nucleic acid (LNA), or an LNA targeting mito-tRNA Asparagine. HDAC2-bound loci were assessed using CUT&RUN, while transcriptional activity was assessed using GRO-Seq

2023-07-01 | GSE213170 | GEO

Mitochondrial-nuclear DNA interactions contribute to the regulation of nuclear transcript levels as part of the inter-organelle communication system

Project description:Nuclear and mitochondrial organelles must maintain a communication system. Loci on the mitochondrial genome were recently reported to interact with nuclear loci. To determine whether this is part of a DNA based communication system we used genome conformation capture to map the global network of DNA-DNA interactions between the mitochondrial and nuclear genomes (Mito-nDNA) in Saccharomyces cerevisiae cells grown under three different metabolic conditions. The interactions that form between mitochondrial and nuclear loci are dependent on the metabolic state of the yeast. Moreover, the frequency of specific mitochondrial - nuclear interactions (i.e. COX1-MSY1 and Q0182-RSM7) showed significant reductions in the absence of mitochondrial encoded reverse transcriptase machinery. Furthermore, these reductions correlated with increases in the transcript levels of the nuclear loci (MSY1 and RSM7). We propose that these interactions represent an inter-organelle DNA mediated communication system and that reverse transcription of mitochondrial RNA plays a role in this process. This SuperSeries is composed of the SubSeries listed below. Refer to individual Series.

2013-01-17 | E-GEOD-34132 | biostudies-arrayexpress

Mitochondrial-nuclear DNA interactions contribute to the regulation of nuclear transcript levels as part of the inter-organelle communication system

2013-01-17 | GSE34132 | GEO