Evidence map›Paper›PMID 25990790›Full record

ArticleScientific reports2015

Continuous de novo biosynthesis of haem and its rapid turnover to bilirubin are necessary for cytoprotection against cell damage.

Taka-aki Takeda, Anfeng Mu, Tran Tien Tai, Sakihito Kitajima, Shigeru Taketani

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 50 citations in OpenAlex.

  1. Review
  2. Review
  3. An extended network for regulation of heme homeostasis in cells.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Inflammation, Dopaminergic Brain and Bilirubin.International journal of molecular sciences · 2023
    Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Bilirubin: A Promising Therapy for Parkinson's Disease.International journal of molecular sciences · 2021
    Review
  17. Regulation of Cytochrome P450 2a5 byFrontiers in pharmacology · 2021
    Article
  18. Review
  19. Review
  20. Article
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.

Taka-aki TakedaDepartment of Biotechnology, Kyoto Institute of Technology, Kyoto 606-8585, Japan.
Anfeng MuDepartment of Biotechnology, Kyoto Institute of Technology, Kyoto 606-8585, Japan.
Tran Tien TaiDepartment of Biotechnology, Kyoto Institute of Technology, Kyoto 606-8585, Japan.
Sakihito KitajimaDepartment of Biotechnology, Kyoto Institute of Technology, Kyoto 606-8585, Japan.
Shigeru TaketaniDepartment of Biotechnology, Kyoto Institute of Technology, Kyoto 606-8585, Japan.
Kyoto Institute of Technology · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is well known that haem serves as the prosthetic group of various haemoproteins that function in oxygen transport, respiratory chain, and drug metabolism. However, much less is known about the functions of the catabolites of haem in mammalian cells. Haem is enzymatically degraded to iron, carbon monoxide (CO), and biliverdin, which is then converted to bilirubin. Owing to difficulties in measuring bilirubin, however, the generation and transport of this end product remain unclear despite its clinical importance. Here, we used UnaG, the recently identified bilirubin-binding fluorescent protein, to analyse bilirubin production in a variety of human cell lines. We detected a significant amount of bilirubin with many non-blood cell types, which was sensitive to inhibitors of haem metabolism. These results suggest that there is a basal level of haem synthesis and its conversion into bilirubin. Remarkably, substantial changes were observed in the bilirubin generation when cells were exposed to stress insults. Since the stress-induced cell damage was exacerbated by the pharmacological blockade of haem metabolism but was ameliorated by the addition of biliverdin and bilirubin, it is likely that the de novo synthesis of haem and subsequent conversion to bilirubin play indispensable cytoprotective roles against cell damage.

Indexed as

ArsenitesBilirubinCadmium ChlorideCell Line, TumorCytoprotectionFerrochelataseFluorescent DyesHEK293 CellsHeLa CellsHemeHeme Oxygenase-1Hep G2 CellsHumansMalatesMCF-7 CellsMitochondriaArsenitesBilirubinbiliverdin reductaseCadmium Chloridediethyl malateFerrochelataseFluorescent DyesHemeHeme Oxygenase-1MalatesOxidoreductases Acting on CH-CH Group Donorssodium arseniteSodium Compounds

Identifiers

PMID25990790
PMCPMC4438432
OpenAlexW2267496074

What OpenQuestion holds

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Registered trials

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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.