Some tumors eliminate healthy neighboring cells to grow, study reveals
medicalxpress - Chromosomal instability is a common feature in many solid tumors and is associated with greater aggressiveness. For years, its main contribution to cancer was thought to be driving the evolution of tumor genomes, causing cells to gain chromosomes with gro…
AI Summary: Researchers found some tumors actively eliminate neighboring healthy cells to expand and thrive, revealing a brutal but precise survival strategy. Understanding the molecular signals that drive this local cell clearance exposes new therapeutic targets — flip the mechanism and you may stop tumors in their tracks, or at least make cancer's arrogance its downfall.
In a First, Scientists Precisely Edit Human Embryo Genes
Carl Zimmer / nytimes - Researchers relied on a newer gene-editing technique that may make it possibl to engineer embryos, a prospect that has long alarmed bioethicists.
AI Summary: Researchers report the first precise edits to human embryo genes, demonstrating a technical milestone that immediately reopened the ethical and safety conversation about germline modification. Scientists urge caution, tighter oversight and more study before any clinical application while bioethicists debate whether we’ve crossed a line that’s been long teased in science fiction.