Evidence map›Paper›PMID 28658650›Full record

ArticleTranslational oncology2017

The Role of Fibroblasts in Pancreatic Cancer: Extracellular Matrix Versus Paracrine Factors.

Louisa Bolm, Simon Cigolla, Uwe A Wittel, Ulrich T Hopt, Tobias Keck, Dirk Rades, Peter Bronsert, Ulrich Friedrich Wellner

Open access · goldAbstract read
In one paragraph

Article in Translational oncology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
2.1field-weighted citation impact, top 11% 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

36 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Glutamine-dependent changes in fibroblast-derived extracellular matrix dictate cancer cell behavior.Matrix biology : journal of the International Society for Matrix Biology · 2026
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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

8 authors at 2 institutions in 1 country.

Louisa BolmDepartment of Surgery, University of Luebeck, Luebeck, Germany. Electronic address: louisa.bolm@googlemail.com.
Simon CigollaDepartment of Surgery, University of Luebeck, Luebeck, Germany.
Uwe A WittelDepartment of Surgery, Medical Center University of Freiburg, Faculty of Medicine, Germany.
Ulrich T HoptDepartment of Surgery, Medical Center University of Freiburg, Faculty of Medicine, Germany.
Tobias KeckDepartment of Surgery, University of Luebeck, Luebeck, Germany.
Dirk RadesDepartment of Radiation Oncology, University of Luebeck, Luebeck, Germany.
Peter BronsertInstitute of Surgical Pathology, Medical Center University of Freiburg, Faculty of Medicine, Germany; Tumorbank Comprehensive Cancer Center Freiburg, Medical Center University of Freiburg, Faculty of Medicine, Germany; German Cancer Consortium (DKTK) and Cancer Research Center (DKFZ), Heidelberg, Germany.
Ulrich Friedrich WellnerDepartment of Surgery, University of Luebeck, Luebeck, Germany.
University of Lübeck · DEUniversity Medical Center Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimDesmoplasia is a characteristic feature and a suspected mechanism of tumor progression in pancreatic ductal adenocarcinoma (PDAC). Main constituents of the stroma involve cancer-associated fibroblasts (CAFs) and extracellular matrix (ECM). The aim of this study was to dissect the interaction of CAFs, ECM, and PDAC cells in both an in vitro setting and a large-scale clinical cohort study. METHODS AND MATERIAL: Patients operated for PDAC were identified from our prospectively maintained clinical database. A standard pathology protocol was applied for pancreatoduodenectomy specimens also assessing CAF activation as either CAF grade 0 or CAF grade +. Interaction between a spectrum of pancreatic cancer cell lines (PCCs) and mouse embryonic fibroblasts (NIH 3T3) was assessed in a conditioned medium experimental setup.

resultsOne hundred eleven patients operated for PDAC from 2001 to 2011 were identified. Univariate analysis disclosed CAF grade + (P = .030), positive M status (P < .001), and lymph node ratio (LNR) > 0.1 (P = .045) to impair overall survival. Independent prognostic factors were CAF grade (P = .050) and positive M status (P = .002). CAF grade correlated with N status (CC = 0.206, P = .030), LNR (CC = 0.187, P = .049), tumor size (CC = -0.275, P = .003), and M status (CC = 0.190, P = .045). In the in vitro setting, paracrine effects of pancreatic cancer cell resulted in morphological activation of fibroblasts and tumor cell differentiation-dependent increase of fibroblast growth. Paracrine effects of poorly differentiated PCCs led to an upregulation of Vimentin in NIH 3T3 fibroblasts. Paracrine effects of fibroblasts on their part promoted cancer cell motility in all PCCs. As the second stromal component, fibroblast-derived ECM resulted in significantly decreased proliferation depending on density and led to upregulation of ZEB1 in poorly differentiated PCCs.

conclusionIn PDAC patients, positive CAF grading was identified as a negative prognostic parameter correlating with positive N status, high LNR, positive M status, and smaller tumor size. Whereas bilateral interaction of PCCs and CAFs promotes tumor progression, ECM poses PCC growth restrictions. In summary, our study discloses differential effects of stromal components and may help to interpret heterogeneous results of former studies.

Identifiers

PMID28658650
PMCPMC5487255
OpenAlexW2630984254

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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.