Evidence map›Paper›PMID 27768598›Full record

ArticleOncotarget2016

Chemotherapy enriches for an invasive triple-negative breast tumor cell subpopulation expressing a precursor form of N-cadherin on the cell surface.

Erik R Nelson, Shenduo Li, Margaret Kennedy, Sturgis Payne, Kelly Kilibarda, Jeffrey Groth, Michelle Bowie, Edgardo Parilla-Castellar, Gustaaf de Ridder, Paul Kelly Marcom and 6 more

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 21% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 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

16 authors at 3 institutions in 1 country.

Erik R NelsonDepartment of Molecular and Integrative Physiology, University of Illinois at Urbana Champaign, Urbana and University of Illinois Cancer Center, University of Illinois at Chicago, Chicago, IL, USA.
Shenduo LiDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Margaret KennedyDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Sturgis PayneDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Kelly KilibardaDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Jeffrey GrothDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Michelle BowieDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Edgardo Parilla-CastellarDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Gustaaf de RidderDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Paul Kelly MarcomDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Matthew LyesDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Bercedis L PetersonDepartment of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC, USA.
Michael CookDepartment of Immunology, Duke University School of Medicine, Durham, NC, USA.
Salvatore V PizzoDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Donald P McDonnellDepartment of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, USA.
Robin E BachelderDepartment of Pathology, Duke University Medical Center, Durham, NC, USA.
Duke Medical Center · USDuke University Hospital · USDuke University · US

Funding

27-hydroxycholesterol as a link between obesity and breast cancer pathogenesisR00CA172357 · NCI · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI NELSON, ERIK RUSSELL · 2014 to 2016
$727k
NCI NIH HHS R00 CA172357
6 · The paper itself

Abstract

backgroundAlthough most triple-negative breast cancer (TNBC) patients initially respond to chemotherapy, residual tumor cells frequently persist and drive recurrent tumor growth. Previous studies from our laboratory and others' indicate that TNBC is heterogeneous, being composed of chemo-sensitive and chemo-resistant tumor cell subpopulations. In the current work, we studied the invasive behaviors of chemo-resistant TNBC, and sought to identify markers of invasion in chemo-residual TNBC.

methodsThe invasive behavior of TNBC tumor cells surviving short-term chemotherapy treatment in vitro was studied using transwell invasion assays and an experimental metastasis model. mRNA expression levels of neural cadherin (N-cadherin), an adhesion molecule that promotes invasion, was assessed by PCR. Expression of N-cadherin and its precursor form (pro-N-cadherin) was assessed by immunoblotting and flow cytometry. Pro-N-cadherin immunohistochemistry was performed on tumors obtained from patients pre- and post- neoadjuvant chemotherapy treatment.

resultsTNBC cells surviving short-term chemotherapy treatment exhibited increased invasive behavior and capacity to colonize metastatic sites compared to untreated tumor cells. The invasive behavior of chemo-resistant cells was associated with their increased cell surface expression of precursor N-cadherin (pro-N-cadherin). An antibody specific for the precursor domain of N-cadherin inhibited invasion of chemo-resistant TNBC cells. To begin to validate our findings in humans, we showed that the percent cell surface pro-N-cadherin (+) tumor cells increased in patients post- chemotherapy treatment.

conclusionsTNBC cells surviving short-term chemotherapy treatment are more invasive than bulk tumor cells. Cell surface pro-N-cadherin expression is associated with the invasive and chemo-resistant behaviors of this tumor cell subset. Our findings indicate the importance of future studies determining the value of cell surface pro-N-cadherin as: 1) a biomarker for TNBC recurrence and 2) a therapeutic target for eliminating chemo-residual disease.

Indexed as

AnimalsAntineoplastic AgentsBiomarkers, TumorCadherinsCell DeathCell Line, TumorCell MembraneCell MovementChemotherapy, AdjuvantDocetaxelFemaleHumansMice, Inbred NODMice, SCIDNeoadjuvant TherapyNeoplasm InvasivenessAntineoplastic AgentsBiomarkers, TumorCadherinsCdh2 protein, mouseDocetaxelProtein PrecursorsTaxoidschemotherapy resistanceinvasionmetastasisPrecursor-N-cadherintriple-negative breast cancer

Identifiers

PMID27768598
PMCPMC5356642
OpenAlexW2536265407

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.