Evidence map›Paper›PMID 19596813›Full record

ArticleNucleic acids research2009

LSM1 over-expression in Saccharomyces cerevisiae depletes U6 snRNA levels.

Natalie Luhtala, Roy Parker

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 28 citations in OpenAlex.

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  19. 3' processing of eukaryotic precursor tRNAs.Wiley interdisciplinary reviews. RNA
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

Natalie LuhtalaCancer Biology Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ 85721-0106, USA.
Roy Parker
Howard Hughes Medical Institute · USUniversity of Arizona · US

Funding

Integrative Cancer Scholars Training GrantT32CA009213 · NCI · UNIVERSITY OF ARIZONA · PI CAREW, JENNIFER S, CURIEL-LEWANDROWSKI, CLARA · 1985 to 2024
$8.6M
mRNA Decapping in YeastR37GM045443 · NIGMS · UNIVERSITY OF COLORADO · PI PARKER, ROY · 2004 to 2013
$3.1M
Howard Hughes Medical InstituteNCI NIH HHS T32 CA009213NCI NIH HHS T32 CA09213NIGMS NIH HHS R37 GM045443NIGMS NIH HHS R37 GM45443
6 · The paper itself

Abstract

Lsm1 is a component of the Lsm1-7 complex involved in cytoplasmic mRNA degradation. Lsm1 is over-expressed in multiple tumor types, including over 80% of pancreatic tumors, and increased levels of Lsm1 protein have been shown to induce carcinogenic effects. Therefore, understanding the perturbations in cell process due to increased Lsm1 protein may help to identify possible therapeutics targeting tumors over-expressing Lsm1. Herein, we show that LSM1 over-expression in the yeast Saccharomyces cerevisiae inhibits growth primarily due to U6 snRNA depletion, thereby altering pre-mRNA splicing. The decrease in U6 snRNA levels causes yeast strains over-expressing Lsm1 to be hypersensitive to loss of other proteins required for production or function of the U6 snRNA, supporting a model wherein excess Lsm1 reduces the availability of the Lsm2-7 proteins, which also assemble with Lsm8 to form a complex that binds and stabilizes the U6 snRNA. Yeast strains over-expressing Lsm1 also display minor alterations in mRNA decay and demonstrate increased susceptibility to mutations inhibiting cytoplasmic deadenylation, a process required for both 5'-to-3' and 3'-to-5' pathways of exonucleolytic decay. These results suggest that inhibition of splicing and/or deadenylation may be effective therapies for Lsm1-over-expressing tumors.

Indexed as

Cell Growth ProcessesGene DeletionRibonucleasesRibonucleoprotein, U4-U6 Small NuclearRNA-Binding ProteinsRNA Cap-Binding ProteinsRNA, MessengerRNA, Small NuclearRNA SplicingRNA StabilitySaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsLHP1 protein, S cerevisiaeLSM1 protein, S cerevisiaeLSM7 protein, S cerevisiaemRNA deadenylaseRibonucleasesRibonucleoprotein, U4-U6 Small NuclearRNA-Binding ProteinsRNA Cap-Binding ProteinsRNA, MessengerRNA, Small NuclearSaccharomyces cerevisiae ProteinsU6 small nuclear RNA

Identifiers

PMID19596813
PMCPMC2760792
OpenAlexW1991536391

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.