Aryl Hydrocarbon Receptor Knockout Accelerates PanIN Formation and Fibro-Inflammation in a Mutant Kras -Driven Pancreatic Cancer Model.
| Autor: | Walcheck MT; From the Division of Surgical Oncology, Department of Surgery, University of Wisconsin School of Medicine and Public Health., Schwartz PB; From the Division of Surgical Oncology, Department of Surgery, University of Wisconsin School of Medicine and Public Health., Carrillo ND; McArdle Laboratory for Cancer Research, University of Wisconsin., Matkowskyj KA, Nukaya M, Bradfield CA; McArdle Laboratory for Cancer Research, University of Wisconsin., Ronnekleiv-Kelly SM |
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| Jazyk: | angličtina |
| Zdroj: | Pancreas [Pancreas] 2024 Sep 01; Vol. 53 (8), pp. e670-e680. Date of Electronic Publication: 2024 May 01. |
| DOI: | 10.1097/MPA.0000000000002357 |
| Abstrakt: | Objectives: The pathogenesis of pancreas cancer (PDAC) remains poorly understood, hindering efforts to develop a more effective therapy for PDAC. Recent discoveries show the aryl hydrocarbon receptor (AHR) plays a crucial role in the development of several cancers and can be targeted for therapeutic effect. However, its involvement in the pathogenesis of PDAC remains unclear. To address this gap, we evaluated the role of AHR in the development of PDAC precancerous lesions in vivo . Materials and Methods: We created a global AHR-null, mutant Kras -driven PDAC mouse model (A -/- KC) and evaluated the changes in PDAC precursor lesion formation (PanIN-1, 2, and 3) and associated fibro-inflammation between KC and A -/- KC at 5 months of age. We then examined the changes in the immune microenvironment followed by single-cell RNA-sequencing analysis to evaluate concomitant transcriptomic changes. Results: We identified a significant increase in PanIN-1 lesion formation and PanIN-1 associated fibro-inflammatory infiltrate in A -/- KC versus KC mice. This was associated with significant changes in the adaptive immune system, particularly a decrease in the CD4+/CD8+ T-cell ratio, as well as a decrease in the T-regulatory/Th17 T-cell ratio suggesting unregulated inflammation. Conclusions: These findings show the loss of AHR results in heightened Kras -induced PanIN formation, through modulation of immune cells within the pancreatic tumor microenvironment. Competing Interests: The authors declare no conflict of interest. (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.) |
| Databáze: | MEDLINE |
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