Evidence map›Paper›PMID 21045111›Full record

ArticleJournal of cell science2010

Dampened activity of E2F1-DP and Myb-MuvB transcription factors in Drosophila endocycling cells.

Shahina B Maqbool, Sonam Mehrotra, Alexis Kolpakas, Chris Durden, Bingqing Zhang, Hua Zhong, Brian R Calvi

Open access · greenAbstract read
In one paragraph

Article in Journal of cell science, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
1.8field-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

33 citing papers in PubMed, 51 citations in OpenAlex.

  1. Article
  2. Long noncoding RNAScience advances · 2024
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  6. Article
  7. Super-resolution microscopy reveals stochastic initiation of replication in Drosophila polytene chromosomes.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2022
    Article
  8. Article
  9. Article
  10. Article
  11. Regulatory Mechanisms of Cell Polyploidy in Insects.Frontiers in cell and developmental biology · 2020
    Review
  12. Article
  13. Article
  14. Polyploidy in tissue homeostasis and regeneration.Development (Cambridge, England) · 2018
    Review
  15. Article
  16. Article
  17. Polyteny: still a giant player in chromosome research.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2017
    Review
  18. Review
  19. Article
  20. 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

7 authors at 3 institutions in 1 country.

Shahina B MaqboolDepartment of Biology, Syracuse University, Syracuse, NY 13244, USA.
Sonam Mehrotra
Alexis Kolpakas
Chris Durden
Bingqing Zhang
Hua Zhong
Brian R Calvi
Indiana University Bloomington · USSyracuse University · USRutgers, The State University of New Jersey · US

Funding

DISSECTION OF A METAZOAN PRE-REPLICATION COMPLEXR01GM061290 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI CALVI, BRIAN R · 2000 to 2009
$2.6M
NIGMS NIH HHS R01 GM061290
6 · The paper itself

Abstract

The endocycle is a variant cell cycle comprised of alternating gap (G) and DNA synthesis (S) phases (endoreplication) without mitosis (M), which results in DNA polyploidy and large cell size. Endocycles occur widely in nature, but much remains to be learned about the regulation of this modified cell cycle. Here, we compared gene expression profiles of mitotic cycling larval brain and disc cells with the endocycling cells of fat body and salivary gland of the Drosophila larva. The results indicated that many genes that are positively regulated by the heterodimeric E2F1-DP or Myb-MuvB complex transcription factors are expressed at lower levels in endocycling cells. Many of these target genes have functions in M phase, suggesting that dampened E2F1 and Myb activity promote endocycles. Many other E2F1 target genes that are required for DNA replication were also repressed in endocycling cells, an unexpected result given that these cells must duplicate up to thousands of genome copies during each S phase. For some EF2-regulated genes, the lower level of mRNA in endocycling cells resulted in lower protein concentration, whereas for other genes it did not, suggesting a contribution of post-transcriptional regulation. Both knockdown and overexpression of E2F1-DP and Myb-MuvB impaired endocycles, indicating that transcriptional activation and repression must be balanced. Our data suggest that dampened transcriptional activation by E2F1-DP and Myb-MuvB is important to repress mitosis and coordinate the endocycle transcriptional and protein stability oscillators.

Indexed as

Cell CycleDown-RegulationAnimalsDNA-Binding ProteinsDrosophilaDrosophila ProteinsE2F1 Transcription FactorMitosisOncogene Proteins v-mybTranscriptional ActivationDNA-Binding ProteinsDp1 protein, DrosophilaDrosophila ProteinsE2F1 Transcription FactorOncogene Proteins v-myb

Identifiers

PMID21045111
PMCPMC2987441
OpenAlexW2106311010

What Socratic holds

Textmetadata
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 Socratic graph.