Journal
ISCIENCE
Volume 26, Issue 1, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.isci.2022.105714
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Partial liver removal is a significant treatment option for liver cancer, but the regeneration process can fail in some cases. To better understand liver regeneration, researchers created a 3D model using experiments in mice and found that a biomechanical growth control mechanism plays a crucial role in controlling cell proliferation. The model's predictions were confirmed in pigs and mice. These findings highlight the importance of biomechanics in liver growth control.
Partial liver removal is an important therapy option for liver cancer. In most pa-tients within a few weeks, the liver is able to fully regenerate. In some patients, however, regeneration fails with often severe consequences. To better understand the control mechanisms of liver regeneration, experiments in mice were performed, guiding the creation of a spatiotemporal 3D model of the regenerating liver. The model represents cells and blood vessels within an entire liver lobe, a macroscopic liver subunit. The model could reproduce the experimental data only if a biomechanical growth control (BGC)-mechanism, inhibiting cell cycle entrance at high compression, was taken into account and predicted that BGC may act as a short-range growth inhibitor minimizing the number of proliferating neighbor cells of a proliferating cell, generating a checkerboard-like proliferation pattern. Model-predicted cell proliferation patterns in pigs and mice were found experimentally. The results underpin the importance of biomechanical aspects in liver growth control.
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