GEO DataSets

(Submitter supplied) The paired-end next-generation sequencing of all hTR versions of less than 200 nucleotides in length was used to analyze the 3’ end distribution of hTR associated to Flag-tagged versions of PABPN1, hTERT and Dyskerin. In total, we obtained 2,716,342, 3,152,013, and 3,077,395 hTR-specific reads for the PABPN1, hTERT, and Dyskerin purifications, respectively. We found that the majority of polyadenylated telomerase RNA recovered in the PABPN1, hTERT, and Dyskerin purifications had poly(A) tails starting immediately after the annotated hTR 3’ end. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL15520

3 Samples

Download data: XLS

(Submitter supplied) Primary telomerase RNA transcripts are processed into shorter mature forms that assemble into a complex with the catalytic subunit and provide the template for telomerase activity. In diverse fungi telomerase RNA 3’ end processing involves a single cleavage reaction by the spliceosome akin to the first step of splicing. Longer forms of human telomerase RNA (hTR) have been reported, but how the mature form of precisely 451 nucleotides is generated is still unknown. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL16791

16 Samples

Download data: XLSX

(Submitter supplied) RNA sequencing of HeLa cells treated with siRNA against the RNA exosome components hRRP40, hRRP6, hDIS3, and hRRP6/hDIS3 or the splicing inhibitors Isoginkgetin and spliceostatin A, respectively.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

33 Samples

Download data: TXT

(Submitter supplied) Here, we develop nascent RNAend-Seq, in which we isolate nascent RNA and sequence the 3' ends of RNA precursors. Using a pulse-chase experimental design, we follow extended precursors of the telomerase RNA component (hTR) and show that the mature telomerase RNA derives from these species with slow kinetics compared to other small non-coding RNAs. The human disease causing gene PARN further delays maturation of the hTR precursor in PARN- mutant cancer cell lines. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL15520

56 Samples

Download data: XLSX

(Submitter supplied) Human telomerase RNA (hTR) is transcribed as a precursor that is then posttranscriptionally modified and processed. A fraction of the transcripts is oligoadenylated by TRAMP and either processed into the mature hTR or degraded by the exosome. Here, we characterize the processing of 3’ extended forms of varying length by PARN and RRP6. We show that tertiary RNA interactions unique to the longer precursor forms favor RNA degradation, whereas H/ACA RNP assembly stimulates productive processing. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL16791

6 Samples

Download data: TSV

(Submitter supplied) Single-strand selective uracil DNA-glycosylase (SMUG1) associates with the DKC1-H/ACA ribonucleoprotein complex, which is essential for telomerase biogenesis. We show herein, that SMUG1 interacts with the telomerase RNA component, hTERC, and is required for co-transcriptional processing of the nascent transcript towards mature hTERC. We demonstrate that SMUG1 regulates the presence of base modifications between the CR4/CR5 region and the H-box situated towards the 3´-end of hTERC. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL18573 GPL15520

10 Samples

Download data: TXT

(Submitter supplied) Mutations in the poly(A) ribonuclease (PARN) gene cause telomere diseases including familial idiopathic pulmonary fibrosis (IPF) and dyskeratosis congenita (DC)1,2, but how PARN deficiency impacts telomere maintenance is unclear. Here, using somatic cells and induced pluripotent stem (iPS) cells from DC patients with PARN mutations, we show that PARN is required for the 3′ end maturation of the telomerase RNA component (TERC). more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

9 Samples

Download data: XLS

(Submitter supplied) Human telomerase assembly is a highly dynamic process. Using biochemical approaches, we found that LARP3 and LARP7/MePCE are involved in the early stage and that their binding to hTR is destabilized when the mature hTR is produced. LARP3 plays a negative role in preventing the processing of the 3′-extended long (exL) form and binding of LARP7 and MePCE. Interestingly, the tertiary structure of the exL form prevents LARP3 binding and facilitates hTR biogenesis. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL34284

4 Samples

Download data: TSV

(Submitter supplied) Poly(A)-specific ribonuclease (PARN) and target of EGR1 protein 1 (TOE1) are nuclear granule-associated deadenylases, whose mutations are linked to multiple human diseases. Here, we applied mTAIL-seq and RNA sequencing (RNA-seq) to systematically identify the substrates of PARN and TOE1 and elucidate their molecular functions. We found that PARN and TOE1 do not modulate the length of mRNA poly(A) tails. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

4 Samples

Download data: CSV

(Submitter supplied) The telomerase RNA component (TERC) is a critical determinant of cellular self renewal. Poly(A)-specific ribonuclease (PARN) is required for post-transcriptional maturation of TERC. PARN mutations lead to incomplete 3′ end processing and increased destruction of nascent TERC RNA transcripts, resulting in telomerase deficiency and telomere diseases. Here, we determined that overexpression of TERC increased telomere length in PARN-deficient cells and hypothesized that decreasing post-transcriptional 3′ oligo-adenylation of TERC would counteract the deleterious effects of PARN mutations. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

8 Samples

Download data: CSV

(Submitter supplied) The RNA exosome is fundamental for the degradation of RNA in eukaryotic nuclei. Substrate targeting is facilitated by its co-factor Mtr4p/hMTR4, which links to RNA-binding protein adaptors. One such activity is the human Nuclear EXosome Targeting (NEXT) complex, composed of hMTR4, the Zn-finger protein ZCCHC8 and the RNA-binding factor RBM7. NEXT primarily targets early and unprocessed transcripts, demanding a rationale for how the nuclear exosome recognizes processed RNAs. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL11154

36 Samples

Download data: BW

(Submitter supplied) We identified a germline heterozygous loss-of-function mutation in ZCCHC8, an RNA exosome targeting component, in a family with autosomal dominant pulmonary fibrosis and telomerase RNA insufficiency. To understand the in vivo consequences of Zcchc8 loss, we targeted the gene locus. Zccchc8+/- showed no significant phenotypes but Zcchc8-/- mice showed severe neurodevelopmental defects and died early in adulthood by 60 days. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

14 Samples

Download data: TXT

(Submitter supplied) To determine the total mRNA polyadenylated in E.coli, we transexpressed mammalian nuclear poly(a) binding protein in E.coli through plasmid and chromosomal integration. RNA Seq analysis revealed general upregulation of around 600 genes commonly in between chrosomal MG PABP and plasmid PABP. 32% of the commonly upregulated genes fall into stress response mRNAs.

Organism:

Escherichia coli

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21222

3 Samples

Download data: XLSX