Evidence map›Paper›PMID 30522464›Full record

ArticleBMC biotechnology2018

High-yield production of human Dicer by transfection of human HEK293-EBNA1 cells grown in suspension.

Jonathan Bouvette, Dursun Nizam Korkut, Aurélien Fouillen, Soumiya Amellah, Antonio Nanci, Yves Durocher, James G Omichinski, Pascale Legault

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.1field-weighted citation impact, top 50% 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

3 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
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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

8 authors at 3 institutions in 1 country.

Jonathan BouvetteDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada.
Dursun Nizam KorkutDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada.
Aurélien FouillenDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada.
Soumiya AmellahDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada.
Antonio NanciDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada.
Yves DurocherDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada.
James G OmichinskiDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada.
Pascale LegaultDépartement de Biochimie et Médecine Moléculaire, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, H3C 3J7, QC, Canada. pascale.legault@umontreal.ca.ORCID 0000-0003-1782-5204
Université de Montréal · CAUniversité du Québec à Montréal · CANational Research Council Canada · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDicer is a 219-kDa protein that plays key roles in gene regulation, particularly as the ribonuclease III enzyme responsible for cleaving precursor miRNA substrates. Its enzymatic activity is highly regulated by protein factors, and this regulation can impact on the levels of miRNAs and modulate the behavior of a cell. To better understand the underlying mechanisms of regulation, detailed enzymatic and structural characterization of Dicer are needed. However, these types of studies generally require several milligrams of recombinant protein, and efficient preparation of such quantities of pure human Dicer remains a challenge. To prepare large quantities of human Dicer, we have optimized transfection in HEK293-6E cells grown in suspension and streamlined a purification procedure.

resultsTransfection conditions were first optimized to achieve expression levels between 10 and 18 mg of recombinant Dicer per liter of culture. A three-step purification protocol was then developed that yields 4-9 mg of purified Dicer per liter of culture in a single day. From SEC-MALS/RI analysis and negative stain TEM, we confirmed that the purified protein is monomerically pure ( ≥ 98%) and folds with the characteristic L-shape geometry. Using an electrophoretic mobility shift assay, a dissociation constant (K

conclusionsThe expression and purification protocols described here provide high yields of monomerically pure and active human Dicer. Cleavage studies of a pre-let-7 substrate with this purified Dicer reveal higher k

Indexed as

DEAD-box RNA HelicasesElectrophoretic Mobility Shift AssayEpstein-Barr Virus Nuclear AntigensGene Expression RegulationHEK293 CellsHumansRibonuclease IIITransfectionDEAD-box RNA HelicasesDICER1 protein, humanEBV-encoded nuclear antigen 1Epstein-Barr Virus Nuclear AntigensRibonuclease IIIDicer bindingDicer cleavage assayDicer expressionDicer purificationHuman HEK293-EBNA1 cellsMammalian cell suspension culturePre-let-7Pre-miRNA

Identifiers

PMID30522464
PMCPMC6282390
OpenAlexW2902400937

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.