Genome editing in rats enables more accurate estrogen receptor-positive breast cancer models

Scientists have long relied on rat disease models to advance our understanding of various conditions, including cancer. One notable example is Charles Huggins' groundbreaking work on hormone therapy for prostate cancer, which earned him a Nobel Prize in 1966. Huggins' research utilized rat models to demonstrate the effectiveness of hormone therapy in treating prostate cancer, paving the way for similar treatments in humans. This achievement highlights the significant contributions rat models have made to scientific discovery and medical research.

Despite their importance, rat models have faced technical challenges in recent decades, particularly in genetic engineering. The difficulties associated with manipulating rat genetics have led to a shift towards mouse models in research. Mouse models have become increasingly popular due to their genetic similarity to humans and the relative ease with which their genes can be engineered. As a result, mouse models have become the preferred choice for many researchers, leading to a decline in the use of rat models in scientific studies.

The shift away from rat models is a testament to the evolving nature of scientific research and the need for more efficient and effective tools. While rat models have played a significant role in shaping our understanding of disease, the challenges associated with genetic engineering have necessitated a transition to alternative models. As research continues to advance, it will be interesting to see how scientists adapt to these changes and explore new avenues for studying disease.