Evidence map›Paper›PMID 36163264›Full record

ArticleLeukemia2022

Splenic red pulp macrophages provide a niche for CML stem cells and induce therapy resistance.

Elias D Bührer, Michael A Amrein, Stefan Forster, Stephan Isringhausen, Christian M Schürch, Salil S Bhate, Tess Brodie, Joel Zindel, Deborah Stroka, Mohamad Al Sayed and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Leukemia, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.7field-weighted citation impact, top 8% 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

19 citing papers in PubMed, 21 citations in OpenAlex.

  1. Review
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  6. Macrophage ferroptosis in hematologic malignancies: emerging mechanisms and therapeutic implications.Apoptosis : an international journal on programmed cell death · 2026
    Review
  7. Review
  8. Association ofAnnals of laboratory medicine · 2026
    Article
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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

14 authors at 3 institutions in 2 countries.

Elias D Bührer *Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.ORCID http://orcid.org/0000-0002-2200-9781
Michael A Amrein *Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.ORCID http://orcid.org/0000-0002-0378-8070
Stefan Forster *Department of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Stephan IsringhausenDepartment of Medical Oncology and Hematology, University Hospital and University of Zürich, Zürich, Switzerland.
Christian M SchürchInstitute of Pathology, University of Bern, Bern, Switzerland.ORCID http://orcid.org/0000-0002-1792-1768
Salil S BhateBaxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA.
Tess BrodieVisceral Surgery, Department of BioMedical Research, University of Bern, Bern, Switzerland.
Joel ZindelVisceral Surgery, Department of BioMedical Research, University of Bern, Bern, Switzerland.
Deborah StrokaVisceral Surgery, Department of BioMedical Research, University of Bern, Bern, Switzerland.
Mohamad Al SayedDepartment of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
César Nombela-ArrietaDepartment of Medical Oncology and Hematology, University Hospital and University of Zürich, Zürich, Switzerland.ORCID http://orcid.org/0000-0003-0415-259X
Ramin RadpourDepartment of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.ORCID http://orcid.org/0000-0002-5632-7833
Carsten RietherDepartment of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.ORCID http://orcid.org/0000-0001-7512-513X
Adrian F OchsenbeinDepartment of Medical Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. adrian.ochsenbein@insel.ch.ORCID http://orcid.org/0000-0003-1773-5436
University of Bern · CHUniversity of Zurich · CHStanford University · US

Funding

Swiss National Science Foundation 133132Swiss National Science Foundation 149768
6 · The paper itself

Abstract

Disease progression and relapse of chronic myeloid leukemia (CML) are caused by therapy resistant leukemia stem cells (LSCs), and cure relies on their eradication. The microenvironment in the bone marrow (BM) is known to contribute to LSC maintenance and resistance. Although leukemic infiltration of the spleen is a hallmark of CML, it is unknown whether spleen cells form a niche that maintains LSCs. Here, we demonstrate that LSCs preferentially accumulate in the spleen and contribute to disease progression. Spleen LSCs were located in the red pulp close to red pulp macrophages (RPM) in CML patients and in a murine CML model. Pharmacologic and genetic depletion of RPM reduced LSCs and decreased their cell cycling activity in the spleen. Gene expression analysis revealed enriched stemness and decreased myeloid lineage differentiation in spleen leukemic stem and progenitor cells (LSPCs). These results demonstrate that splenic RPM form a niche that maintains CML LSCs in a quiescent state, resulting in disease progression and resistance to therapy.

Indexed as

Leukemia, Myelogenous, Chronic, BCR-ABL PositiveLeukemia, MyeloidAnimalsDisease ProgressionHumansMacrophagesMiceNeoplastic Stem CellsSpleenTumor Microenvironment

Identifiers

PMID36163264
PMCPMC7613762
OpenAlexW4297219832

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.