Evidence map›Paper›PMID 19117992›Full record

ArticleCancer research2009

PCPH/ENTPD5 expression confers to prostate cancer cells resistance against cisplatin-induced apoptosis through protein kinase Calpha-mediated Bcl-2 stabilization.

Joaquín Villar, Humair S Quadri, Insun Song, York Tomita, Oscar M Tirado, Vicente Notario

Open access · bronzeAbstract read
In one paragraph

Article in Cancer research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. The complexities of PKCα signaling in cancer.Advances in biological regulation · 2021
    Review
  8. Ectonucleotidases in Inflammation, Immunity, and Cancer.Journal of immunology (Baltimore, Md. : 1950) · 2021
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Norcantharidin induces autophagy-related prostate cancer cell death through Beclin-1 upregulation by miR-129-5p suppression.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
    Article
  15. VEGF-activated miR-144 regulates autophagic survival of prostate cancer cells against Cisplatin.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
    Article
  16. Article
  17. Article
  18. Article
  19. Article
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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

6 authors at 1 institution in 1 country.

Joaquín VillarLaboratory of Experimental Carcinogenesis, Department of Radiation Medicine, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, 3970 Reservoir Road Northwest, Washington, DC 20057-1482, USA.
Humair S Quadri
Insun Song
York Tomita
Oscar M Tirado
Vicente Notario
Georgetown University · US

Funding

Tissue Culture Shared ResourceP30CA051008 · NCI · GEORGETOWN UNIVERSITY · PI STEPHEN W BYERS · 1990 to 2026
$71.5M
FUNCTION OF THE PCPH ONCOGENE IN MAMM;CARCINOGENESISR01CA064472 · NCI · GEORGETOWN UNIVERSITY · PI NOTARIO, VICENTE · 1995 to 2007
$2.0M
NCI NIH HHS P30 CA051008NCI NIH HHS P30 CA 51008NCI NIH HHS R01 CA064472NCI NIH HHS R01 CA 64472
6 · The paper itself

Abstract

Prostate cancer (PCa) frequently develops antiapoptotic mechanisms and acquires resistance to anticancer drugs. Therefore, identifying PCa drug resistance determinants should facilitate designing more effective chemotherapeutic regimens. Recently, we described that the PCPH protein becomes highly expressed in human prostatic intraepithelial neoplasia and in PCa, and that the functional interaction between PCPH and protein kinase Cdelta (PKCdelta) increases the invasiveness of human PCa. Here, we report that the functional interaction between PCPH and a different PKC isoform, PKCalpha, confers resistance against cisplatin-induced apoptosis to PCa cells. This interaction elicits a mechanism ultimately resulting in the posttranslational stabilization and subsequent elevated expression of Bcl-2. Stable knockdown of either PCPH, mt-PCPH, or PKCalpha in PCa cells decreased Ser70-phosphorylated Bcl-2 and total Bcl-2 protein, thereby increasing their cisplatin sensitivity. Conversely, forced expression of the PCPH protein or, in particular, of the mt-PCPH oncoprotein increased the levels of phosphorylated PKCalpha concurrently with those of Ser70-phosphorylated and total Bcl-2 protein, thus promoting cisplatin resistance. Consistently, Bcl-2 knockdown sensitized PCa cells to cisplatin treatment and, more importantly, reversed the cisplatin resistance of PCa cells expressing the mt-PCPH oncoprotein. Moreover, reexpression of Bcl-2 in PCPH/mt-PCPH knockdown PCa cells reversed the cisplatin sensitization caused by PCPH or mt-PCPH down-regulation. These findings identify PCPH and mt-PCPH as important participants in the chemotherapy response of PCa cells, establish a role for PCPH-PKCalpha-Bcl-2 functional interactions in the drug response process, and imply that targeting PCPH expression before, or simultaneously with, chemotherapy may improve the treatment outcome for PCa patients.

Indexed as

Antineoplastic AgentsApoptosisCarbazolesCell Line, TumorCisplatinDown-RegulationDrug Resistance, NeoplasmHumansMaleOncogene ProteinsPhosphorylationProstatic NeoplasmsProtein Kinase C-alphaProto-Oncogene Proteins c-bcl-2PyrophosphatasesRNA, Small InterferingAntineoplastic AgentsCarbazolesCisplatinENTPD5 protein, humanGo 6976Oncogene ProteinsProtein Kinase C-alphaProto-Oncogene Proteins c-bcl-2PyrophosphatasesRNA, Small Interfering

Identifiers

PMID19117992
PMCPMC2614304
OpenAlexW2110675259

What OpenQuestion holds

Textmetadata
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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.