Evidence map›Paper›PMID 31404943›Full record

ArticleBritish journal of pharmacology2019

Role of the CLOCK protein in liver detoxification.

Mengjing Zhao, Huan Zhao, Jiangming Deng, Lianxia Guo, Baojian Wu

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 71 citations in OpenAlex.

  1. Article
  2. Hepatocellular Carcinoma Around the Clock.Current oncology (Toronto, Ont.) · 2026
    Review
  3. Article
  4. Review
  5. Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Grain-Sized Moxibustion Heightens the AntiTumor Effect of Cyclophosphamide in Hepa1-6 Bearing Mice.Evidence-based complementary and alternative medicine : eCAM · 2022
    Article
  18. Article
  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 2 countries.

Mengjing ZhaoResearch Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China.
Huan ZhaoResearch Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China.
Jiangming DengResearch Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China.
Lianxia GuoResearch Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China.
Baojian WuResearch Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China.ORCID 0000-0003-4629-5142
Jinan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeWhether and how circadian clock proteins regulate drug detoxification are not known. Here, we have assessed the effects of CLOCK (a core circadian clock protein) on drug metabolism and detoxification. EXPERIMENTAL APPROACH: Regulation by CLOCK protein of drug-metabolizing enzymes was assessed using Clock knockout (Clock KEY

resultsClock deletion disrupted hepatic diurnal expressions of a number of drug-metabolizing enzymes in mice. In particular, CYP2A4/5 expressions were markedly down-regulated, whereas CYP2B10 was up-regulated. Positive regulation of Cyp2a4/5 and negative regulation of Cyp2b10 by CLOCK were confirmed in Hepa-1c1c7 and AML-12 cells. Based on a combination of luciferase reporter, mobility shift, and ChIP assays, we found that CLOCK activated Cyp2a4/5 transcription via specific binding to E-box elements in promoter region and repressed Cyp2b10 transcription through REV-ERBα/β (two target genes of CLOCK and transcriptional repressors of Cyp2b10). Furthermore, Clock ablation sensitized mice to coumarin toxicity by down-regulating CYP2A4/5-mediated metabolism (a detoxification pathway) and to cyclophosphamide toxicity by up-regulating CYP2B10-mediated metabolism (generating the toxic metabolite 4-hydroxycyclophosphamide). CONCLUSION AND IMPLICATIONS: CLOCK protein regulates metabolism by the cytochrome P450 family and drug detoxification. The findings improve our understanding of the crosstalk between circadian clock and drug detoxification.

Indexed as

Circadian ClocksAnimalsCell Line, TumorCLOCK ProteinsCoumarinsCyclophosphamideCytochrome P-450 Enzyme SystemGene Expression RegulationHumansInactivation, MetabolicMiceMice, KnockoutMicrosomes, LiverNIH 3T3 CellsCLOCK protein, humanClock protein, mouseCLOCK ProteinscoumarinCoumarinsCyclophosphamideCytochrome P-450 Enzyme System

Identifiers

PMID31404943
PMCPMC6965678
OpenAlexW2967577775

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.