Evidence map›Paper›PMID 34539865›Full record

ArticleOncology letters2021

Role of NELF-B in supporting epithelial-mesenchymal transition and cell proliferation during hepatocellular carcinoma progression.

Mennatallah Hani Ghouraba, Razan Jamil Masad, Eric Zadok Mpingirika, Omnia Mahmoud Abdelraheem, Rached Zeghlache, Aya M Alserw, Asma Amleh

Open access · diamondAbstract read
In one paragraph

Article in Oncology letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.2field-weighted citation impact, top 51% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. Article
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

7 authors at 1 institution in 1 country.

Mennatallah Hani GhourabaDepartment of Biotechnology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
Razan Jamil MasadDepartment of Biotechnology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
Eric Zadok MpingirikaDepartment of Biotechnology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
Omnia Mahmoud AbdelraheemDepartment of Biotechnology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
Rached ZeghlacheDepartment of Biology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
Aya M AlserwDepartment of Biology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
Asma AmlehDepartment of Biotechnology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt.
American University in Cairo · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Negative elongation factor-B (NELF-B), also known as cofactor of BRCA1 (COBRA1), is one of the four subunits of the NELF complex. It interacts with BRCA1, in addition to other transcription complexes in various tissues. The NELF complex represses the transcription of several genes by stalling RNA polymerase II during the early phase of transcription elongation. The role of NELF-B in liver cancer and hepatocellular carcinoma (HCC), the most prevalent type of liver cancer, remains to be elucidated. It has been previously demonstrated that silencing of NELF-B inhibits the proliferation and migration of HepG2 cells. The present study aimed to investigate the consequences of ectopic expression and silencing of NELF-B in liver cancer HepG2 and SNU449 cell lines. Functional assays were performed to examine the effects on gene and protein expression, viability, migration and invasion of cells. Overexpression of NELF-B did not alter the proliferation and migration of HepG2 cells, or the expression of tested genes, indicating that overexpression alone may not be sufficient for altering these features in HepG2 cells. By contrast, knockdown of NELF-B in SNU449 cells resulted in decreased cell proliferation, together with induction of apoptosis and decreased expression levels of Ki-67 and survivin, which are markers of proliferation and inhibition of apoptosis, respectively. Additionally, silencing of NELF-B resulted in a significant decrease in the hallmarks of epithelial-mesenchymal transition (EMT), including cell migration and invasion, and decreased the expression levels of EMT markers, such as N-cadherin, vimentin and β-catenin. Decreased expression levels of forkhead box F2 transcription factor and increased mRNA levels of trefoil factor 1, a putative tumor suppressor, were also detected following the silencing of NELF-B. The current results demonstrated that NELF-B enhanced the manifestation of most hallmarks of cancer, including cell proliferation, migration, invasion and inhibition of apoptosis, indicating its critical role in the progression of HCC.

Indexed as

COBRA1invasionmigrationNELF

Identifiers

PMID34539865
PMCPMC8436359
OpenAlexW3196873574

What OpenQuestion holds

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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.