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Cancer epigenetics

Primary tumor chromatin landscape governs metastatic organotropism

Little is known about how mutations in genes encoding tumor suppressors influence metastatic site selection and whether sustained inactivation of such genes influences tumor maintenance at these sites. A new study shows that restoration of Smad4 expression in extant pancreatic metastases has anti-tumor effects in the liver but pro-tumor effects in the lungs.

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Fig. 1: The ‘switch’ from inactive Smad4 to active Smad4 in PDAC metastases shines light on the presence of distinct cell states that originate in primary PDAC tumors and promote metastatic organotropism.

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Correspondence to David M. Feldser.

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Gladstein, A.C., Feldser, D.M. Primary tumor chromatin landscape governs metastatic organotropism. Nat Cancer 6, 1755–1756 (2025). https://doi.org/10.1038/s43018-025-01048-4

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