A protein called XPG plays a previously unknown and critical role helping to maintain genome stability in human cells. It may also help prevent breast, ovarian, and other cancers associated with defective BRCA genes.
Berkeley Lab researchers have developed the first clinically-relevant mouse model of human breast cancer to successfully express functional estrogen receptor positive adenocarcinomas.
This model should be a powerful tool for testing therapies for aggressive ER+ breast cancers and for studying luminal cancers — the most prevalent and deadliest forms of breast cancer.
Time-lapse imaging can make complicated processes easier to grasp. Berkeley Lab scientists are using a similar approach to study how cells repair DNA damage. Microscopy images are acquired about every thirty minutes over a span of up to two days, and the resulting sequence of images shows ever-changing hotspots inside cells where DNA is under repair.
Berkeley Lab scientists are developing a cell culture that could help researchers better identify chemicals that increase breast cancer susceptibility. The scientists will grow the culture using adult stem cells obtained from breast tissue. Their test will show if a chemical causes a breakdown in cell-to-cell communication, which is a fundamental defect of cancer.