Evidence map›Paper›PMID 17932622›Full record

ArticleMolecular and cellular biochemistry2008

Caffeine inhibits UV-mediated NF-kappaB activation in A2058 melanoma cells: an ATM-PKCdelta-p38 MAPK-dependent mechanism.

Dashnamoorthy Ravi, Harish Muniyappa, Kumuda C Das

Abstract read
PubMed Publisher
In one paragraph

Article in Molecular and cellular biochemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 16% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Pharmacology of natural radioprotectors.Archives of pharmacal research · 2018
    Review
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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

3 authors at 1 institution in 1 country.

Dashnamoorthy RaviDepartment of Pathology, University of Arkansas for Medical Sciences, 4301 W Markham Street, Slot # 845, Little Rock, AR 72205, USA.
Harish Muniyappa
Kumuda C Das
University of Arkansas for Medical Sciences · US

Funding

DNA damage signaling in oxygen toxicity in lung cellsR01HL071558 · NHLBI · UNIV OF ARKANSAS FOR MED SCIS · PI DAS, KUMUDA C · 2004 to 2007
$1.1M
NHLBI NIH HHS HL071558
6 · The paper itself

Abstract

Mammalian ultraviolet (UV) radiation response is a gene induction cascade activated by several transcription factors, including NF-kappaB. Although NF-kappaB is induced by UV radiation, the signal transduction mechanism remains relatively unclear. In the present study, we show that UV-induced NF-kappaB activation is mediated by the activation of Ataxia telangiecia mutated (ATM) and protein kinase C (PKC). We also show that caffeine specifically inhibits UV-mediated NF-kappaB activation, but not TNFalpha-mediated NF-kappaB activation. In addition, our study shows that ATM, but not ATM-Rad3-related (ATR) or DNA-dependent protein kinase (DNA-PK) is involved in UV-induced NF-kappaB activation. Because SB203580 (a p38 MAPK inhibitor), or Calphostin C or rottlerin (PKC inhibitors) was able to inhibit UV-mediated NF-kappaB activation, we evaluated whether caffeine could inhibit p38 MAPK or PKC activity. Caffeine or rottlerin inhibited UV-induced phosphorylation of p38 MAPK, but not anisomycin-induced phosphorylation of p38 MAPK, suggesting that p38 MAPK is downstream of PKC. Additionally, caffeine could effectively inhibit UV-induced increases in PKC activity. Taken together, our study demonstrates that caffeine is a potent inhibitor of UV-induced NF-kappaB activation. Additionally, this inhibition occurs due to the inhibitory action of caffeine on ATM and PKC, resulting in the inhibition of p38 MAPK activation.

Indexed as

Ultraviolet RaysAtaxia Telangiectasia Mutated ProteinsCaffeineCasein Kinase IICell Cycle ProteinsCell Line, TumorCell NucleusDNA-Binding ProteinsEnzyme ActivationHumansI-kappa B ProteinsMelanomaNF-kappa Bp38 Mitogen-Activated Protein KinasesProtein Kinase C-deltaProtein Kinase InhibitorsAtaxia Telangiectasia Mutated ProteinsATM protein, humanCaffeineCasein Kinase IICell Cycle ProteinsDNA-Binding ProteinsI-kappa B ProteinsNF-kappa Bp38 Mitogen-Activated Protein KinasesProtein Kinase C-deltaProtein Kinase InhibitorsProtein Serine-Threonine KinasesTranscription Factor RelATumor Necrosis Factor-alphaTumor Suppressor Proteins

Identifiers

PMID17932622
OpenAlexW1974368874

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.