Skip to main content
Top
Published in: European Journal of Nuclear Medicine and Molecular Imaging 1/2022

Open Access 08-09-2022 | Magnetic Resonance Imaging | Original Article

Functional biomarkers derived from computed tomography and magnetic resonance imaging differentiate PDAC subgroups and reveal gemcitabine-induced hypo-vascularization

Authors: Irina Heid, Marija Trajkovic-Arsic, Fabian Lohöfer, Georgios Kaissis, Felix N. Harder, Moritz Mayer, Geoffrey J. Topping, Friderike Jungmann, Barbara Crone, Moritz Wildgruber, Uwe Karst, Lucia Liotta, Hana Algül, Hsi-Yu Yen, Katja Steiger, Wilko Weichert, Jens T. Siveke, Marcus R. Makowski, Rickmer F. Braren

Published in: European Journal of Nuclear Medicine and Molecular Imaging | Issue 1/2022

Login to get access

Abstract

Purpose

Pancreatic ductal adenocarcinoma (PDAC) is a molecularly heterogeneous tumor entity with no clinically established imaging biomarkers. We hypothesize that tumor morphology and physiology, including vascularity and perfusion, show variations that can be detected by differences in contrast agent (CA) accumulation measured non-invasively. This work seeks to establish imaging biomarkers for tumor stratification and therapy response monitoring in PDAC, based on this hypothesis.

Methods and materials

Regional CA accumulation in PDAC was correlated with tumor vascularization, stroma content, and tumor cellularity in murine and human subjects. Changes in CA distribution in response to gemcitabine (GEM) were monitored longitudinally with computed tomography (CT) Hounsfield Units ratio (HUr) of tumor to the aorta or with magnetic resonance imaging (MRI) ΔR1 area under the curve at 60 s tumor-to-muscle ratio (AUC60r). Tissue analyses were performed on co-registered samples, including endothelial cell proliferation and cisplatin tissue deposition as a surrogate of chemotherapy delivery.

Results

Tumor cell poor, stroma-rich regions exhibited high CA accumulation both in human (meanHUr 0.64 vs. 0.34, p < 0.001) and mouse PDAC (meanAUC60r 2.0 vs. 1.1, p < 0.001). Compared to the baseline, in vivo CA accumulation decreased specifically in response to GEM treatment in a subset of human (HUr −18%) and mouse (AUC60r −36%) tumors. Ex vivo analyses of mPDAC showed reduced cisplatin delivery (GEM: 0.92 ± 0.5 mg/g, vs. vehicle: 3.1 ± 1.5 mg/g, p = 0.004) and diminished endothelial cell proliferation (GEM: 22.3% vs. vehicle: 30.9%, p = 0.002) upon GEM administration.

Conclusion

In PDAC, CA accumulation, which is related to tumor vascularization and perfusion, inversely correlates with tumor cellularity. The standard of care GEM treatment results in decreased CA accumulation, which impedes drug delivery. Further investigation is warranted into potentially detrimental effects of GEM in combinatorial therapy regimens.
Appendix
Available only for authorised users
Literature
1.
go back to reference Sung H, Ferlay J, Siegel RL, Laversanne M, Soerjomataram I, Jemal A, et al. Global cancer statistics 2020: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer J Clin. 2021; https://doi.org/10.3322/caac.21660. Sung H, Ferlay J, Siegel RL, Laversanne M, Soerjomataram I, Jemal A, et al. Global cancer statistics 2020: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer J Clin. 2021; https://​doi.​org/​10.​3322/​caac.​21660.
2.
go back to reference Society AC. Cancer Facts and Figures 2014-2021. Society AC. Cancer Facts and Figures 2014-2021.
30.
go back to reference Pijnappel EN, Wassenaar NPM, Gurney-Champion OJ, Klaassen R, van der Lee K, Pleunis-van Empel MCH, et al. Phase I/II study of LDE225 in combination with gemcitabine and nab-paclitaxel in patients with metastatic pancreatic cancer. Cancers (Basel). 2021;13 https://doi.org/10.3390/cancers13194869. Pijnappel EN, Wassenaar NPM, Gurney-Champion OJ, Klaassen R, van der Lee K, Pleunis-van Empel MCH, et al. Phase I/II study of LDE225 in combination with gemcitabine and nab-paclitaxel in patients with metastatic pancreatic cancer. Cancers (Basel). 2021;13 https://​doi.​org/​10.​3390/​cancers13194869.
35.
go back to reference Steingoetter A, Svensson J, Kosanke Y, Botnar RM, Schwaiger M, Rummeny E, et al. Reference region-based pharmacokinetic modeling in quantitative dynamic contract-enhanced MRI allows robust treatment monitoring in a rat liver tumor model despite cardiovascular changes. Magn Reson Med. 2011;65:229–38. https://doi.org/10.1002/mrm.22589.CrossRefPubMed Steingoetter A, Svensson J, Kosanke Y, Botnar RM, Schwaiger M, Rummeny E, et al. Reference region-based pharmacokinetic modeling in quantitative dynamic contract-enhanced MRI allows robust treatment monitoring in a rat liver tumor model despite cardiovascular changes. Magn Reson Med. 2011;65:229–38. https://​doi.​org/​10.​1002/​mrm.​22589.CrossRefPubMed
Metadata
Title
Functional biomarkers derived from computed tomography and magnetic resonance imaging differentiate PDAC subgroups and reveal gemcitabine-induced hypo-vascularization
Authors
Irina Heid
Marija Trajkovic-Arsic
Fabian Lohöfer
Georgios Kaissis
Felix N. Harder
Moritz Mayer
Geoffrey J. Topping
Friderike Jungmann
Barbara Crone
Moritz Wildgruber
Uwe Karst
Lucia Liotta
Hana Algül
Hsi-Yu Yen
Katja Steiger
Wilko Weichert
Jens T. Siveke
Marcus R. Makowski
Rickmer F. Braren
Publication date
08-09-2022
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Nuclear Medicine and Molecular Imaging / Issue 1/2022
Print ISSN: 1619-7070
Electronic ISSN: 1619-7089
DOI
https://doi.org/10.1007/s00259-022-05930-6

Other articles of this Issue 1/2022

European Journal of Nuclear Medicine and Molecular Imaging 1/2022 Go to the issue