Evidence map›Paper›PMID 27986950›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Early pancreatic cancer lesions suppress pain through CXCL12-mediated chemoattraction of Schwann cells.

Ihsan Ekin Demir, Kristina Kujundzic, Paulo L Pfitzinger, Ömer Cemil Saricaoglu, Steffen Teller, Timo Kehl, Carmen Mota Reyes, Linda S Ertl, Zhenhua Miao, Thomas J Schall and 9 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

51 citing papers in PubMed, 82 citations in OpenAlex.

  1. Molecular mechanisms and therapeutic targets in lung cancer-nerve crosstalk.Chinese medical journal pulmonary and critical care medicine · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors at 3 institutions in 2 countries.

Ihsan Ekin DemirDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany; ekin.demir@tum.de gueralp.ceyhan@tum.de.
Kristina KujundzicDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Paulo L PfitzingerDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Ömer Cemil SaricaogluDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Steffen TellerDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Timo KehlDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Carmen Mota ReyesDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Linda S ErtlChemoCentryx, Inc., Mountain View, CA 94043.
Zhenhua MiaoChemoCentryx, Inc., Mountain View, CA 94043.
Thomas J SchallChemoCentryx, Inc., Mountain View, CA 94043.
Elke TieftrunkDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Bernhard HallerInstitute of Medical Statistics and Epidemiology, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Kalliope Nina DiakopoulosDepartment of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Magdalena U KurkowskiDepartment of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Marina LesinaDepartment of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Achim KrügerInstitute for Molecular Immunology and Experimental Oncology, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Hana AlgülDepartment of Internal Medicine II, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Helmut FriessDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany.
Güralp O CeyhanDepartment of Surgery, Klinikum rechts der Isar, Technische Universität München, 81675 Munich, Germany; ekin.demir@tum.de gueralp.ceyhan@tum.de.
Klinikum rechts der Isar · DETechnical University of Munich · DEChemoCentryx (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pancreatic ductal adenocarcinoma (PDAC) cells (PCC) have an exceptional propensity to metastasize early into intratumoral, chemokine-secreting nerves. However, we hypothesized the opposite process, that precancerous pancreatic cells secrete chemokines that chemoattract Schwann cells (SC) of nerves and thus induce ready-to-use routes of dissemination in early carcinogenesis. Here we show a peculiar role for the chemokine CXCL12 secreted in early PDAC and for its receptors CXCR4/CXCR7 on SC in the initiation of neural invasion in the cancer precursor stage and the resulting delay in the onset of PDAC-associated pain. SC exhibited cancer- or hypoxia-induced CXCR4/CXCR7 expression in vivo and in vitro and migrated toward CXCL12-expressing PCC. Glia-specific depletion of CXCR4/CXCR7 in mice abrogated the chemoattraction of SC to PCC. PDAC mice with pancreas-specific CXCL12 depletion exhibited diminished SC chemoattraction to pancreatic intraepithelial neoplasia and increased abdominal hypersensitivity caused by augmented spinal astroglial and microglial activity. In PDAC patients, reduced CXCR4/CXCR7 expression in nerves correlated with increased pain. Mechanistically, upon CXCL12 exposure, SC down-regulated the expression of several pain-associated targets. Therefore, PDAC-derived CXCL12 seems to induce tumor infiltration by SC during early carcinogenesis and to attenuate pain, possibly resulting in delayed diagnosis in PDAC.

Indexed as

AnimalsCarcinoma, Pancreatic DuctalCell Line, TumorChemokine CXCL12ChemotaxisMiceMice, TransgenicPainPancreatic NeoplasmsReceptors, CXCRReceptors, CXCR4Schwann CellsChemokine CXCL12Cmkor1 protein, mouseCxcl12 protein, mouseCXCR4 protein, mouseReceptors, CXCRReceptors, CXCR4CXCL12CXCR4CXCR7pancreatic cancerSchwann cells

Identifiers

PMID27986950
PMCPMC5224369
OpenAlexW2565655079

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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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.