Cited by 91Pancreatic and Hepatic Oncology ResearchPancreatitis Pathology and TreatmentCancer Cells and Metastasis

Extrinsic KRAS signaling shapes the pancreatic microenvironment through fibroblast reprogramming

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Velez-Delgado, Ashley, Donahue, Katelyn L., Brown, Kristee L., Du, Wenting, Irizarry-Negron, Valerie, Menjivar, Rosa E., Lasse Opsahl, Emily L., Steele, Nina G. +19 more·2022·Cellular and Molecular Gastroenterology and Hepatology

Published version of a preprint

Abstract

BACKGROUND & AIMS: Oncogenic Kirsten Rat Sarcoma virus (KRAS) is the hallmark mutation of human pancreatic cancer and a driver of tumorigenesis in genetically engineered mouse models of the disease. Although the tumor cell-intrinsic effects of oncogenic Kras expression have been widely studied, its role in regulating the extensive pancreatic tumor microenvironment is less understood. METHODS: Using a genetically engineered mouse model of inducible and reversible oncogenic Kras expression and a combination of approaches that include mass cytometry and single-cell RNA sequencing we studied the effect of oncogenic KRAS in the tumor microenvironment. RESULTS: We have discovered that non-cell autonomous (ie, extrinsic) oncogenic KRAS signaling reprograms pancreatic fibroblasts, activating an inflammatory gene expression program. As a result, fibroblasts become a hub of extracellular signaling, and the main source of cytokines mediating the polarization of protumorigenic macrophages while also preventing tissue repair. CONCLUSIONS: Our study provides fundamental knowledge on the mechanisms underlying the formation of the fibroinflammatory stroma in pancreatic cancer and highlights stromal pathways with the potential to be exploited therapeutically.

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Crossref · 10.1016/j.jcmgh.2022.02.016

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  • Oncogenic KRAS signaling in PDAC cells initiates and coordinates development of a growth-supportive niche.

    “the oncogenic KRAS signaling in the PDAC cells initiates and coordinates the development of this growth supportive niche139”

    From Pancreatic cancer: Advances and challenges (2023) · cites this paper as [139]

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Authors
Velez-Delgado, A., Donahue, K. L., Brown, K. L., Du, W., Irizarry-Negron, V., Menjivar, R. E., Lasse Opsahl, E. L., Steele, N. G., The, S., Lazarus, J., Sirihorachai, V. R., Yan, W., Kemp, S. B., Kerk, S. A., Bollampally, M., Yang, S., Scales, M. K., Avritt, F. R., Lima, F., Lyssiotis, C. A., Rao, A., Crawford, H. C., Bednar, F., Frankel, T. L., Allen, B. L., Zhang, Y., & Pasca di Magliano, M.
Affiliations
  • University of Michigan (US)
  • U-M Rogel Cancer Center (US)
Corresponding author
Zhang, Yaqing
Venue
Cellular and Molecular Gastroenterology and Hepatology
Publisher
Elsevier BV
Published
2022
Volume
13
Issue
6
Pages
1673-1699
ISSN
2352-345X (ISSN-L)
OpenAlex
W4220963866
Cited by
91
References
89
Citations by year
2026: 13 · 2025: 20 · 2024: 33 · 2023: 22 · 2022: 3
FWCI
8.16
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Gastroenterology and Hepatology (publishedVersion, cc-by-nc-nd)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health (K08CA201581, DK097153, R01CA248160, RSG-16-005-01, F31CA24745701, F31-CA247076, T32-HD007505, R37CA214955, T32-GM113900, R37CA237421, T32-GM007315)
  • NCI Cancer Moonshot
  • University of Michigan Comprehensive Cancer Center
  • University of Michigan
  • National Cancer Institute (R01CA198074, R01CA151588)
  • American Cancer Society (U01CA-224145, NCI-R50CA232985)
  • Rogel Cancer Center, University of Michigan (S10OD28612-01-A1)
Topics
  • Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
  • Health Sciences › Medicine › Surgery › Pancreatitis Pathology and Treatment
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
Keywords
KRAS signaling, pancreatic cancer, tumor microenvironment, pancreatic fibroblasts, fibroblast reprogramming, macrophage polarization, cytokines, tissue repair, non-cell-autonomous signaling, genetically engineered mouse models
MeSH terms
Animals, Fibroblasts, Kirsten murine sarcoma virus, Pancreatic Neoplasms, Proto-Oncogene Proteins p21(ras), Mice, Tumor Microenvironment

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