Cited by 56Immune cells in cancerPancreatic and Hepatic Oncology ResearchCancer, Stress, Anesthesia, and Immune Response

Multiomic characterization of pancreatic cancer-associated macrophage polarization reveals deregulated metabolic programs driven by the GM-CSF-PI3K pathway

Open access
Boyer, Seth, Lee, Ho-Joon, Steele, Nina, Zhang, Li, Sajjakulnukit, Peter, Andren, Anthony, Ward, Matthew H, Singh, Rima +6 more·2022·eLife

Published version of a preprint

Abstract

The pancreatic ductal adenocarcinoma microenvironment is composed of a variety of cell types and marked by extensive fibrosis and inflammation. Tumor-associated macrophages (TAMs) are abundant, and they are important mediators of disease progression and invasion. TAMs are polarized in situ to a tumor promoting and immunosuppressive phenotype via cytokine signaling and metabolic crosstalk from malignant epithelial cells and other components of the tumor microenvironment. However, the specific distinguishing features and functions of TAMs remain poorly defined. Here, we generated tumor-educated macrophages (TEMs) in vitro and performed detailed, multiomic characterization (i.e., transcriptomics, proteomics, metabolomics). Our results reveal unique genetic and metabolic signatures of TEMs, the veracity of which were queried against our in-house single-cell RNA sequencing dataset of human pancreatic tumors. This analysis identified expression of novel, metabolic TEM markers in human pancreatic TAMs, including ARG1, ACLY, and TXNIP. We then utilized our TEM model system to study the role of mutant Kras signaling in cancer cells on TEM polarization. This revealed an important role for granulocyte–macrophage colony-stimulating factor (GM-CSF) and lactate on TEM polarization, molecules released from cancer cells in a mutant Kras-dependent manner. Lastly, we demonstrate that GM-CSF dysregulates TEM gene expression and metabolism through PI3K–AKT pathway signaling. Collectively, our results define new markers and programs to classify pancreatic TAMs, how these are engaged by cancer cells, and the precise signaling pathways mediating polarization.

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Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Deoxycytidine can also be released from CAFs.

    “Deoxycytidine can also be released from CAFs259”

    From Pancreatic cancer: Advances and challenges (2023) · cites this paper as [259]

  • Both TAM- and CAF-released deoxycytidine inhibit gemcitabine efficacy through molecular competition at deoxycytidine kinase.

    “both TAM and CAF-released deoxycytidine act to inhibit the efficacy of gemcitabine through molecular competition at deoxycytidine kinase258,259”

    From Pancreatic cancer: Advances and challenges (2023) · cites this paper as [259]

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Authors
Boyer, S., Lee, H.-J., Steele, N., Zhang, L., Sajjakulnukit, P., Andren, A., Ward, M. H., Singh, R., Basrur, V., Zhang, Y., Nesvizhskii, A. I., Pasca di Magliano, M., Halbrook, C. J., & Lyssiotis, C. A.
Affiliations
  • University of Michigan (US)
  • University of California, Irvine (US)
  • Department of Surgery, University of Michigan
Corresponding author
  • Lee, Ho-Joon
  • Halbrook, Christopher J
  • Lyssiotis, Costas A
Venue
eLife
Published
2022-02-14
Volume
11
ISSN
2050-084X (ISSN-L)
OpenAlex
W4220853254
Cited by
56
References
58
Citations by year
2026: 10 · 2025: 9 · 2024: 11 · 2023: 19 · 2022: 7
FWCI
4.39
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Cancer Institute (R50CA232985, U24CA210967, U01CA224145, P30CA046592, F32CA228328, K99/R00CA241357, P30CA062203, R37CA237421, R01CA248160, R01CA244931, K99CA26315401)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30DK034933, DK097153)
  • National Pancreas Foundation (NPF-5615796)
  • V Foundation for Cancer Research (V2021-026)
  • Sky Foundation
  • Charles Woodson Research Fund
  • UM Pediatric Brain Tumor Initiative
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Cancer, Stress, Anesthesia, and Immune Response
Keywords
pancreatic ductal adenocarcinoma, tumor-associated macrophages, macrophage polarization, GM-CSF, PI3K/Akt signaling, tumor microenvironment, cancer metabolism, lactate, Arg1, ATP citrate lyase, TXNIP, metabolic crosstalk, immunosuppression
MeSH terms
Tumor-Associated Macrophages, Animals, Cell Transformation, Neoplastic, Humans, Mice, Inbred C57BL, Pancreatic Neoplasms, Transcription Factors, Signal Transduction, Granulocyte-Macrophage Colony-Stimulating Factor, Gene Expression Profiling, Proteomics, Cell Line, Tumor, Mice, Metabolic Networks and Pathways, Metabolomics

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