New research uncovers gene impacts of PFAS exposure in firefighters
Peer-Reviewed Publication
Updates every hour. Last Updated: 12-Sep-2025 01:11 ET (12-Sep-2025 05:11 GMT/UTC)
A new paper provides evidence of how PFAS, often called “forever chemicals,” correspond to epigenetic changes that can lead to cancers, neurological disorders and autoimmune conditions.
A new class of PRMT5 inhibitors, designed to exploit a genetic vulnerability in aggressive tumors, works even better when paired with MAPK pathway drugs—wiping out hard-to-treat lung, brain, and pancreatic cancers in preclinical models, according to Virginia Tech scientists.
Cancer cells interact with their neighborhood — which scientists term the tumor microenvironment — in many ways, including obtaining extra resources needed to fuel their unchecked growth. Like a fishing trawler deploying its net, pancreatic ductal adenocarcinoma (PDAC) cells reform their cell surfaces to grab additional nutrients from the jelly-like substance between cells called the extracellular matrix.
This cellular scavenging process — known as macropinocytosis — affects the area surrounding the tumor, making the connective tissue stiffer and preventing immune cells from reaching the tumor.
Scientists at the NCI-Designated Cancer Center at Sanford Burnham Prebys published findings July 24, 2025, in Cancer Cell demonstrating that blocking macropinocytosis reshapes the tumor microenvironment to be less fibrous and to allow more access to immune cells. These changes made immunotherapy and chemotherapy more effective in treating PDAC tumors in mice.In one of the largest studies of its kind, researchers found that up to 80% of emergency department visits and more than one-third of hospitalizations in severely impaired and terminally ill nursing home residents were potentially avoidable. Common causes included UTIs, pneumonia, feeding tube complications, falls, and seizures – many preventable with timely, on-site care. These unnecessary transfers not only distress vulnerable patients and families but also drive-up health care costs, contributing to $14.3 billion in annual Medicare spending.