Multianimal Magnetic Resonance Imaging for Tumor Measurements in Pancreatic Cancer Mouse Models

Area of Science:

• Preclinical research
• Medical imaging
• Oncology

Background:

• Magnetic resonance imaging (MRI) is crucial for preclinical tumor detection in mouse models, providing detailed anatomical data.
• However, MRI is costly and time-consuming, limiting its accessibility in research.
• Existing methods require individual scanning, increasing procedural burden.

Purpose of the Study:

• To develop and validate a cost-effective, time-efficient multianimal MRI protocol for enhanced tumor detection and monitoring.
• To streamline preclinical research workflows without compromising imaging quality.
• To facilitate longitudinal studies in genetically engineered mouse models.

Main Methods:

• Implementation of a four-chamber bed insert for simultaneous high-resolution anatomical MRI acquisition of multiple mice.
• Application of the protocol to a Kras-driven, p53-deleted (KPC) mouse model of pancreatic ductal adenocarcinoma.
• Validation of the protocol by assessing the therapeutic benefit of gemcitabine treatment.

Main Results:

• The multianimal MRI protocol successfully enabled simultaneous high-resolution scanning of multiple mice in a single session.
• The workflow significantly reduced the time and cost associated with preclinical tumor imaging.
• The protocol demonstrated its utility in monitoring tumor progression and response to therapy in the KPC model.

Conclusions:

• The developed multianimal MRI protocol offers a practical and efficient solution for preclinical tumor imaging and monitoring.
• This approach enhances accessibility to advanced imaging techniques for cancer research.
• Future applications include evaluating combination therapies and other treatment strategies in relevant preclinical models.