Evidence map›Paper›PMID 35122047›Full record

ArticleNature cancer2020

Sonic hedgehog accelerates DNA replication to cause replication stress promoting cancer initiation in medulloblastoma.

Lukas Tamayo-Orrego, David Gallo, Frédéric Racicot, Amandine Bemmo, Sushmetha Mohan, Brandon Ho, Samer Salameh, Trang Hoang, Andrew P Jackson, Grant W Brown and 1 more

Erratum issuedOpen access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Nature cancer, 2020. 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 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

20 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
  2. Article
  3. Morphogen Gradients as Drivers of Mosaicism During Early Human Development.BioEssays : news and reviews in molecular, cellular and developmental biology · 2026
    Review
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  7. G-quadruplexes as a source of vulnerability in BRCA2Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Critical DNA damaging pathways in tumorigenesis.Seminars in cancer biology · 2022
    Review
  15. Article
  16. Article
  17. Sonic Hedgehog Signaling in Cerebellar Development and Cancer.Frontiers in cell and developmental biology · 2022
    Review
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 2 countries.

Lukas Tamayo-OrregoMontreal Clinical Research Institute, Montreal, Quebec, Canada.ORCID 0000-0001-7041-4848
David Gallo *Department of Biochemistry and Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario, Canada.
Frédéric Racicot *Montreal Clinical Research Institute, Montreal, Quebec, Canada.
Amandine BemmoMontreal Clinical Research Institute, Montreal, Quebec, Canada.
Sushmetha MohanMontreal Clinical Research Institute, Montreal, Quebec, Canada.
Brandon HoDepartment of Biochemistry and Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario, Canada.
Samer SalamehMontreal Clinical Research Institute, Montreal, Quebec, Canada.
Trang HoangInstitute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec, Canada.
Andrew P JacksonMRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK.
Grant W BrownDepartment of Biochemistry and Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario, Canada.ORCID 0000-0002-9002-5003
Frédéric CharronMontreal Clinical Research Institute, Montreal, Quebec, Canada. Frederic.Charron@ircm.qc.ca.ORCID 0000-0003-3483-8672
Montreal Clinical Research Institute · CAUniversity of Toronto · CAInstitute for Research in Immunology and Cancer · CAInstitute of Genetics and Cancer · GB

Funding

CIHR FDN334023Medical Research Council MC_UU_00007/5
6 · The paper itself

Abstract

The mechanisms generating cancer-initiating mutations are not well understood. Sonic hedgehog (SHH) pathway activation is frequent in medulloblastoma (MB), with PTCH1 mutations being a common initiating event. Here we investigated the role of the developmental mitogen SHH in initiating carcinogenesis in the cells of origin: granule cell progenitors (GCPs). We delineate a molecular mechanism for tumor initiation in MB. Exposure of GCPs to Shh causes a distinct form of DNA replication stress, increasing both origin firing and fork velocity. Shh promotes DNA helicase loading and activation, with increased Cdc7-dependent origin firing. The S-phase duration is reduced and hyper-recombination occurs, causing copy number neutral loss of heterozygosity-a frequent event at the PTCH1/ptch1 locus. Moreover, Cdc7 inhibition to attenuate origin firing reduces recombination and preneoplastic tumor formation in mice. Therefore, tissue-specific replication stress induced by Shh promotes loss of heterozygosity, which in tumor-prone Ptch1

Indexed as

Cerebellar NeoplasmsMedulloblastomaAnimalsCarcinogenesisDNA ReplicationHedgehog ProteinsMiceHedgehog Proteins

Identifiers

PMID35122047
OpenAlexW3043674480

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.