Evidence map›Paper›PMID 16103883›Full record

ArticleOncogene2005

Upregulation of ASCL1 and inhibition of Notch signaling pathway characterize progressive astrocytoma.

Kumaravel Somasundaram, Sreekanth P Reddy, Katyayni Vinnakota, Ramona Britto, Madhavan Subbarayan, Sandeep Nambiar, Aparna Hebbar, Cini Samuel, Mitesh Shetty, Hari Kishore Sreepathi and 5 more

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Oncogene, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

63 citing papers in PubMed, 133 citations in OpenAlex.

  1. Review
  2. Tumor heterogeneity and resistance in glioblastoma: the role of stem cells.Apoptosis : an international journal on programmed cell death · 2025
    Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Hippo Pathway in Regulating Drug Resistance of Glioblastoma.International journal of molecular sciences · 2021
    Review
  17. Article
  18. Article
  19. The Role of Neurodevelopmental Pathways in Brain Tumors.Frontiers in cell and developmental biology · 2021
    Review
  20. Article

3 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

15 authors at 5 institutions in 1 country.

Kumaravel Somasundaram1Department of Microbiology and Cell Biology, Indian Institute of Science, Malleswaram, Bangalore 560012, India.
Sreekanth P Reddy
Katyayni Vinnakota
Ramona Britto
Madhavan Subbarayan
Sandeep Nambiar
Aparna Hebbar
Cini Samuel
Mitesh Shetty
Hari Kishore Sreepathi
Vani Santosh
Alangar Sathyaranjandas Hegde
Sridevi Hegde
Paturu Kondaiah
M R S Rao
Indian Institute of Science Bangalore · INManipal Hospital · INJawaharlal Nehru Centre for Advanced Scientific Research · INNational Institute of Mental Health and Neurosciences · INSri Sathya Sai Institute of Higher Medical Sciences · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Astrocytoma is the most common type of brain cancer constituting more than half of all brain tumors. With an aim to identify markers describing astrocytoma progression, we have carried out microarray analysis of astrocytoma samples of different grades using cDNA microarray containing 1152 cancer-specific genes. Data analysis identified several differentially regulated genes between normal brain tissue and astrocytoma as well as between grades II/III astrocytoma and glioblastoma multiforme (GBM; grade IV). We found several genes known to be involved in malignancy including Achaete-scute complex-like 1 (Drosophila) (ASCL1; Hash 1). As ASCL has been implicated in neuroendocrine, medullary thyroid and small-cell lung cancers, we chose to examine the role of ASCL1 in the astrocytoma development. Our data revealed that ASCL1 is overexpressed in progressive astrocytoma as evidenced by increased levels of ASCL1 transcripts in 85.71% (6/7) of grade II diffuse astrocytoma (DA), 90% (9/10) of grade III anaplastic astrocytoma (AA) and 87.5% (7/8) of secondary GBMs, while the majority of primary de novo GBMs expressed similar to or less than normal brain levels (66.67%; 8/12). ASCL1 upregulation in progressive astrocytoma is accompanied by inhibition of Notch signaling as seen by uninduced levels of HES1, a transcriptional target of Notch1, increased levels of HES6, a dominant-negative inhibitor of HES1-mediated repression of ASCL1, and increased levels of Notch ligand Delta1, which is capable of inhibiting Notch signaling by forming intracellular Notch ligand autonomous complexes. Our results imply that inhibition of Notch signaling may be an important early event in the development of grade II DA and subsequent progression to grade III AA and secondary GBM. Furthermore, ASCL1 appears to be a putative marker to distinguish primary GBM from secondary GBM.

Indexed as

Gene Expression Regulation, NeoplasticSignal TransductionAstrocytomaBasic Helix-Loop-Helix ProteinsBrainBrain NeoplasmsDisease ProgressionDNA-Binding ProteinsGene Expression ProfilingGlioblastomaHelix-Loop-Helix MotifsHumansMembrane ProteinsOligonucleotide Array Sequence AnalysisReceptors, NotchReverse Transcriptase Polymerase Chain ReactionASCL1 protein, humanBasic Helix-Loop-Helix ProteinsDNA-Binding ProteinsMembrane ProteinsReceptors, NotchRNA, NeoplasmTranscription Factors

Identifiers

PMID16103883
OpenAlexW2149811650

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.