Evidence map›Paper›PMID 26011941›Full record

ArticleOncotarget2015

Inhibition of RSK with the novel small-molecule inhibitor LJI308 overcomes chemoresistance by eliminating cancer stem cells.

Alastair H Davies, Kristen Reipas, Kaiji Hu, Rachel Berns, Natalie Firmino, Anna L Stratford, Sandra E Dunn

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 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.7field-weighted citation impact, top 14% 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

21 citing papers in PubMed, 38 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 3 institutions in 1 country.

Alastair H DaviesDepartment of Urological Sciences, Vancouver Prostate Centre, Vancouver, BC, Canada.
Kristen ReipasSchool of Medicine, Queen's University, Kingston, ON, Canada.
Kaiji HuDepartment of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada.
Rachel BernsDepartment of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada.
Natalie FirminoDepartment of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada.
Anna L StratfordDepartment of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada.
Sandra E DunnPhoenix Molecular Diagnostics, Richmond, BC, Canada.
Child and Family Research Institute · CAQueen's University · CAUniversity of British Columbia · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

The triple-negative breast cancer (TNBC) subtype is enriched in cancer stem cells (CSCs) and clinically correlated with the highest rate of recurrence. Several studies implicate the RSK pathway as being pivotal for the growth and proliferation of CSCs, which are postulated to drive tumor relapse. We now address the potential for the newly developed RSK inhibitor LJI308 to target the CSC population and repress TNBC growth and dissemination. Overexpression of the Y-box binding protein-1 (YB-1) oncogene in human mammary epithelial cells (HMECs) drove TNBC tumor formation characterized by a multi-drug resistance phenotype, yet these cells were sensitive to LJI308 in addition to the classic RSK inhibitors BI-D1870 and luteolin. Notably, LJI308 specifically targeted transformed cells as it had little effect on the non-tumorigenic parental HMECs. Loss of cell growth, both in 2D and 3D culture, was attributed to LJI308-induced apoptosis. We discovered CD44+/CD49f+ TNBC cells to be less sensitive to chemotherapy compared to the isogenic CD44-/CD49f- cells. However, inhibition of RSK using LJI308, BI-D1870, or luteolin was sufficient to eradicate the CSC population. We conclude that targeting RSK using specific and potent inhibitors, such as LJI308, delivers the promise of inhibiting the growth of TNBC.

Indexed as

ApoptosisCell Line, TumorCell ProliferationDrug Resistance, NeoplasmFemaleHumansNeoplastic Stem CellsPteridinesTriple Negative Breast NeoplasmsBI D1870Pteridinesbreast cancercancer stem cellsdrug resistancedrug targetRSKYB-1

Identifiers

PMID26011941
PMCPMC4653026
OpenAlexW1886994902

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.