Evidence map›Paper›PMID 29410485›Full record

ArticleScientific reports2018

Quinacrine upregulates p21/p27 independent of p53 through autophagy-mediated downregulation of p62-Skp2 axis in ovarian cancer.

DeokBeom Jung, Ashwani Khurana, Debarshi Roy, Eleftheria Kalogera, Jamie Bakkum-Gamez, Jeremy Chien, Viji Shridhar

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
4.4field-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

35 citing papers in PubMed, 49 citations in OpenAlex.

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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

7 authors at 4 institutions in 1 country.

DeokBeom JungDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN, USA.
Ashwani KhuranaDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN, USA.
Debarshi RoyDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN, USA.
Eleftheria KalogeraDivision of Gynecologic Surgery, Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN, USA.
Jamie Bakkum-GamezDivision of Gynecologic Surgery, Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN, USA.
Jeremy ChienDivision of Molecular Medicine, University of New Mexico School of Medicine, Albuquerque, NM, USA.
Viji ShridharDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN, USA. shridhar.vijayalakshmi@mayo.edu.
Mayo Clinic · USMayo Clinic in Arizona · USWinnMed · USUniversity of New Mexico · US

Funding

Use of microfluidic tumor cultures to enable clinical trials of therapies for ovarian cancerP50CA136393 · NCI · MAYO CLINIC ROCHESTER · PI ELLEN L. GOODE · 2009 to 2026
$37.0M
Role of HSulf-1 Loss in Apoptosis and Drug ResistanceR01CA106954 · NCI · MAYO CLINIC ROCHESTER · PI SHRIDHAR, VIJI · 2004 to 2007
$949k
NCI NIH HHS P50 CA136393NCI NIH HHS R01 CA106954
6 · The paper itself

Abstract

We have previously shown that the anti-malarial compound Quinacrine (QC) inhibits ovarian cancer (OC) growth by modulating autophagy. In the present study we extended these studies to identify the molecular pathways regulated by QC to promote apoptosis independent of p53 status in OC. QC exhibited strong anti-cancer properties in OC cell lines in contrast to other anti-malarial autophagy inhibiting drugs. QC treatment selectively upregulated cell cycle inhibitor p21, and downregulated F box protein Skp2 and p62/SQSTM1 expression independent of p53 status. Genetic downregulation of key autophagy protein ATG5 abolished QC-mediated effects on both cell cycle protein p21/Skp2 as well as autophagic cargo protein p62. Furthermore, genetic silencing of p62/SQSTM1 resulted in increased sensitivity to QC-mediated apoptosis, downregulated Skp2 mRNA and increased accumulation of p21 expression. Likewise, genetic knockdown of Skp2 resulted in the upregulation of p21 and p27 and increased sensitivity of OC cells to QC treatment. In contrast, transient overexpression of exogenous p62-HA plasmid rescued the QC-mediated Skp2 downregulation indicating the positive regulation of Skp2 by p62. Collectively, these data indicate that QC-mediated effects on cell cycle proteins p21/Skp2is autophagy-dependent and p53-independent in high grade serious OC cells.

Indexed as

Gene Expression Regulation, NeoplasticAntimalarialsAntineoplastic AgentsApoptosisAutophagyCell Cycle CheckpointsCell Line, TumorCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27Drug RepositioningFemaleHumansOvaryQuinacrineRNA, MessengerRNA, Small InterferingAntimalarialsAntineoplastic AgentsCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27QuinacrineRNA, MessengerRNA, Small InterferingSequestosome-1 ProteinSKP2 protein, humanS-Phase Kinase-Associated ProteinsSQSTM1 protein, humanTumor Suppressor Protein p53

Identifiers

PMID29410485
PMCPMC5802832
OpenAlexW2804652474

What OpenQuestion holds

Textmetadata
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.