Evidence map›Paper›PMID 19521728›Full record

ArticleJournal of industrial microbiology & biotechnology2009

Chemical induction of silent biosynthetic pathway transcription in Aspergillus niger.

K M Fisch, A F Gillaspy, M Gipson, J C Henrikson, A R Hoover, L Jackson, F Z Najar, H Wägele, R H Cichewicz

Open access · bronzeAbstract readEvaluation Study
PubMed Publisher
In one paragraph

Article in Journal of industrial microbiology & biotechnology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
11.0field-weighted citation impact, top 1% 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

67 citing papers in PubMed, 166 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Review
  20. Article

7 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

9 authors at 4 institutions in 3 countries.

K M FischSchool of Chemistry, University of Bristol, Cantocks Close, Bristol BS8 1TS, UK.
A F Gillaspy
M Gipson
J C Henrikson
A R Hoover
L Jackson
F Z Najar
H Wägele
R H Cichewicz
University of Oklahoma · USUniversity of Oklahoma Health Sciences Center · USUniversity of Bristol · GBZoological Research Museum Alexander Koenig · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Manipulation of the fungal epigenome is hypothesized to be an effective method for accessing natural products from silent biosynthetic pathways. A library of epigenetic modifiers was tested using the fungus Aspergillus niger to determine the impact of small-molecule inhibitors on reversing the transcriptional suppression of biosynthetic genes involved in polyketide (PKS), non-ribosomal peptide (NRPS), and hybrid PKS-NRPS (HPN) production. Examination of expressed sequence tag libraries from A. niger demonstrated that >70% of its PKS-, NRPS-, and HPN-encoding gene clusters were transcriptionally suppressed under standard laboratory culture conditions. Using a chemical epigenetic methodology, we showed that treatment of A. niger with suberoylanilide hydroxamic acid and 5-azacytidine led to the transcriptional upregulation of many secondary-metabolite-encoding biosynthetic gene clusters. Chemical epigenetic modifiers exhibited positional biases for upregulating chromosomally distal gene clusters. In addition, a phylogenetic-based preference was noted in the upregulation of reducing clade I PKS gene clusters, while reducing clade IV PKS gene clusters were largely unaffected. Manipulating epigenetic features in fungi is a powerful method for accessing the products of silent biosynthetic pathways. Moreover, this approach can be readily incorporated into modern microbial screening operations.

Indexed as

Gene Expression Regulation, FungalMultigene FamilyAspergillus nigerAzacitidineBiological ProductsBiosynthetic PathwaysBiotechnologyEpigenesis, GeneticExpressed Sequence TagsFungal ProteinsGene LibraryHydroxamic AcidsPeptide SynthasesPolyketide SynthasesReverse Transcriptase Polymerase Chain ReactionUp-RegulationAzacitidineBiological ProductsFungal ProteinsHydroxamic Acidsnon-ribosomal peptide synthasePeptide SynthasesPolyketide SynthasesVorinostat

Identifiers

PMID19521728
OpenAlexW2086927240

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.