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Autophagy Breakdown and Protein Aggregates Prime Pancreatic Cells for Cancer

This research links ER-phagy failure to protein aggregation driving acinar-to-ductal metaplasia with plans to explore early detection and reversal strategies

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Overview

  • ER-phagy defects in murine pancreatic epithelial cells lead to buildup of misfolded protein aggregates resembling those in neurodegenerative diseases
  • Oncogenic KRAS suppresses ER-phagy function, exacerbating proteostasis failure and setting the stage for malignant transformation
  • Ectopic expression of insoluble REG3B in mice reproduces an injury-like acinar state and acinar-to-ductal metaplasia, a key early step toward pancreatic cancer
  • Parallel protein clumps found in human pancreatic tissue samples indicate a conserved process across species in cancer initiation
  • Researchers will investigate whether autophagy defects and aggregates can be predicted or reversed early and how factors such as age, sex and diet influence their onset