Evidence map›Paper›PMID 26945853›Full record

ArticleBiochimica et biophysica acta2016

RNA-binding protein HuD reduces triglyceride production in pancreatic β cells by enhancing the expression of insulin-induced gene 1.

Chongtae Kim, Heejin Lee, Hoin Kang, Jung Jae Shin, Hyosun Tak, Wook Kim, Myriam Gorospe, Eun Kyung Lee

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Biochimica et biophysica acta, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.5field-weighted citation impact, top 13% 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

17 citing papers in PubMed, 26 citations in OpenAlex.

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  15. Intersections of post-transcriptional gene regulatory mechanisms with intermediary metabolism.Biochimica et biophysica acta. Gene regulatory mechanisms · 2017
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Chongtae KimDepartment of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul 137-701, South Korea.
Heejin LeeDepartment of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul 137-701, South Korea.
Hoin KangDepartment of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul 137-701, South Korea.
Jung Jae ShinDepartment of Molecular Science and Technology, Ajou University, Suwon 443-749, South Korea.
Hyosun TakDepartment of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul 137-701, South Korea.
Wook KimDepartment of Molecular Science and Technology, Ajou University, Suwon 443-749, South Korea.
Myriam GorospeLaboratory of Genetics, National Institute on Aging-Intramural Research Program, NIH, Baltimore, MD 21224, USA.
Eun Kyung LeeDepartment of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul 137-701, South Korea; Institute for Aging and Metabolic Diseases, College of Medicine, The Catholic University of Korea, Seoul 137-701, South Korea. Electronic address: leeek@catholic.ac.kr.
Catholic University of Korea · KRAjou University · KRNational Institute on Aging · US

Funding

Post-transcriptional regulation of energy usage: glucose and lipid metabolismZIAAG000394 · NIA · NATIONAL INSTITUTE ON AGING · PI GOROSPE, MYRIAM · 2009 to 2025
$18.7M
Influence of mRNA Turnover on the Biology of Cellular Senescence and AgingZ01AG000393 · NIA · NATIONAL INSTITUTE ON AGING · PI GOROSPE, MYRIAM NONE · 2008 to 2008
$265k
Intramural NIH HHS Z01 AG000393
6 · The paper itself

Abstract

Although triglyceride (TG) accumulation in the pancreas leads to β-cell dysfunction and raises the chance to develop metabolic disorders such as type 2 diabetes (T2DM), the molecular mechanisms whereby intracellular TG levels are regulated in pancreatic β cells have not been fully elucidated. Here, we present evidence that the RNA-binding protein HuD regulates TG production in pancreatic β cells. Mouse insulinoma βTC6 cells stably expressing a small hairpin RNA targeting HuD (shHuD) (βTC6-shHuD) contained higher TG levels compared to control cells. Moreover, downregulation of HuD resulted in a decrease in insulin-induced gene 1 (INSIG1) levels but not in the levels of sterol regulatory element-binding protein 1c (SREBP1c), a key transcription factor for lipid production. We identified Insig1 mRNA as a direct target of HuD by using ribonucleoprotein immunoprecipitation (RIP) and biotin pulldown analyses. By associating with the 3'-untranslated region (3'UTR) of Insig1 mRNA, HuD promoted INSIG1 translation; accordingly, HuD downregulation reduced while ectopic HuD expression increased INSIG1 levels. We further observed that HuD downregulation facilitated the nuclear localization of SREBP1c, thereby increasing the transcriptional activity of SREBP1c and the expression of target genes involved in lipogenesis; likewise, we observed lower INSIG1 levels in the pancreatic islets of HuD-null mice. Taken together, our results indicate that HuD functions as a novel repressor of lipid synthesis in pancreatic β cells.

Indexed as

AnimalsDiabetes Mellitus, Type 2ELAV-Like Protein 4HumansInsulinInsulin-Secreting CellsIntracellular Signaling Peptides and ProteinsMembrane ProteinsMiceRNA-Binding ProteinsSterol Regulatory Element Binding Protein 1TriglyceridesElavl4 protein, mouseELAV-Like Protein 4INSIG1 protein, humanInsulinIntracellular Signaling Peptides and ProteinsMembrane ProteinsRNA-Binding ProteinsSrebf1 protein, mouseSterol Regulatory Element Binding Protein 1TriglyceridesHuDINSIG1RNA-binding proteinSREBP1cTriglyceride

Identifiers

PMID26945853
PMCPMC8498970
OpenAlexW2290713800

What OpenQuestion holds

Textmetadata
LicenceTDM
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.