Evidence map›Paper›PMID 25980443›Full record

ArticleOncotarget2015

Mitochondrial p53 phosphorylation induces Bak-mediated and caspase-independent cell death.

Jinjing Wang, Wenhao Guo, Hang Zhou, Na Luo, Chunlai Nie, Xinyu Zhao, Zhu Yuan, Xinyu Liu, Yuquan Wei

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
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  3. OPA1, a molecular regulator of dilated cardiomyopathy.Journal of cellular and molecular medicine · 2023
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  17. Non-Canonical Cell Death Induced by p53.International journal of molecular sciences · 2016
    Review
  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

9 authors at 4 institutions in 1 country.

Jinjing WangDepartment of Abdominal Oncology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P. R. China.
Wenhao GuoDepartment of Abdominal Oncology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P. R. China.
Hang ZhouDepartment of Chemotherapy, Sichuan Cancer Hospital, Chengdu, Sichuan 610041, P. R. China.
Na LuoNankai University School of Medicine, Collaborative Innovation Center of Biotherapy, Tianjin 300071, P. R. China.
Chunlai NieDepartment of Abdominal Oncology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P. R. China.
Xinyu ZhaoDepartment of Abdominal Oncology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P. R. China.
Zhu YuanDepartment of Abdominal Oncology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P. R. China.
Xinyu LiuDepartment of Abdominal Oncology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P. R. China.
Yuquan WeiDepartment of Abdominal Oncology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu 610041, P. R. China.
State Key Laboratory of BiotherapySichuan University · CNNankai University · CNSichuan Cancer Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chemoresistance in cancer has previously been attributed to gene mutations or deficiency. Caspase mutations or Bax deficiency can lead to resistance to cancer drugs. We recently demonstrated that Bak initiates a caspase/Bax-independent cell death pathway. We show that Plumbagin (PL) (5-hydroxy-2-methyl-1,4-napthoquinone), a medicinal plant-derived naphthoquinone that is known to have anti-tumor activity in a variety of models, induces caspase-independent cell death in HCT116 Bax knockout (KO) or MCF-7 Bax knockdown (KD) cells that express wild-type (WT) Bak. The re-expression of Bax in HCT116 Bax KO cells fails to enhance the PL-induced cell death. Additionally, Bak knockdown by shRNA efficiently attenuates PL-induced cell death. These results suggest that PL-induced cell death depends primarily on Bak, not Bax, in these cells. Further experimentation demonstrated that p53 Ser15 phosphorylation and mitochondrial translocation mediated Bak activation and subsequent cell death. Knockdown of p53 or a p53 Ser15 mutant significantly inhibited p53 mitochondrial translocation and cell death. Furthermore, we found that Akt mediated p53 phosphorylation and the subsequent mitochondrial accumulation. Taken together, our data elaborate the role of Bak in caspase/Bax-independent cell death and suggest that PL may be an effective agent for overcoming chemoresistance in cancer cells with dysfunctional caspases.

Indexed as

ApoptosisAntineoplastic Agents, Phytogenicbcl-2-Associated X Proteinbcl-2 Homologous Antagonist-Killer ProteinBlotting, WesternCaspasesCell Line, TumorDrug Resistance, NeoplasmFluorescent Antibody TechniqueGene Knockdown TechniquesGene Knockout TechniquesHumansMitochondriaNaphthoquinonesPhosphorylationRNA, Small InterferingAntineoplastic Agents, PhytogenicBAK1 protein, humanbcl-2-Associated X Proteinbcl-2 Homologous Antagonist-Killer ProteinCaspasesNaphthoquinonesplumbaginRNA, Small InterferingTP53 protein, humanTumor Suppressor Protein p53AktBakcaspase-independentp53

Identifiers

PMID25980443
PMCPMC4627301
OpenAlexW1521392240

What OpenQuestion holds

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LicenceCC BY
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.