Evidence map›Paper›PMID 19056894›Full record

ArticleGenes & development2008

Endocycling cells do not apoptose in response to DNA rereplication genotoxic stress.

Sonam Mehrotra, Shahina B Maqbool, Alexis Kolpakas, Katherine Murnen, Brian R Calvi

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed
–field-weighted citation impact
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

100 citing papers in PubMed, 144 citations in OpenAlex.

  1. Growth under pressure: The pros and cons of polyploidy induced by stress.Proceedings of the National Academy of Sciences of the United States of America · 2026
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40 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

Sonam MehrotraDepartment of Biology, Syracuse University, Syracuse, New York 13244, USA.
Shahina B Maqbool
Alexis Kolpakas
Katherine Murnen
Brian R Calvi
Syracuse University · US

Funding

NIGMS NIH HHS GM612290-07
6 · The paper itself

Abstract

Initiation of DNA replication at origins more than once per cell cycle results in rereplication and has been implicated in cancer. Here we use Drosophila to examine the checkpoint responses to rereplication in a developmental context. We find that increased Double-parked (Dup), the Drosophila ortholog of Cdt1, results in rereplication and DNA damage. In most cells, this rereplication triggers caspase activation and apoptotic cell death mediated by both p53-dependent and -independent pathways. Elevated Dup also caused DNA damage in endocycling cells, which switch to a G/S cycle during normal development, indicating that rereplication and the endocycling DNA reduplication program are distinct processes. Unexpectedly, however, endocycling cells do not apoptose regardless of tissue type. Our combined evidence suggests that endocycling apoptosis is repressed in part because proapoptotic gene promoters are silenced. Normal endocycling cells had DNA lesions near heterochromatin, which increased after rereplication, explaining why endocycling cells must constantly repress the genotoxic apoptotic response. Our results reveal a novel regulation of apoptosis in development and new insights into the little-understood endocycle. Similar mechanisms may operate during vertebrate development, with implications for cancer predisposition in certain tissues.

Indexed as

DNA DamageAnimalsApoptosisCell Cycle ProteinsCells, CulturedDNA-Binding ProteinsDNA ReplicationDrosophila melanogasterDrosophila ProteinsFemaleModels, BiologicalReverse Transcriptase Polymerase Chain ReactionCell Cycle ProteinsDNA-Binding ProteinsDrosophila ProteinsDUP protein, Drosophila

Identifiers

PMID19056894
PMCPMC2593612
OpenAlexW2146993368

What OpenQuestion 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 OpenQuestion graph.