Aging is the strongest risk factor for cancer, yet for much of my scientific training it existed as a background statistic rather than a biological variable. That changed during my postdoctoral research, when I began studying how aging alters early oncogenic responses in colon epithelial cells.
In young tissues, activating an oncogene often triggers a well-described protective mechanism — oncogene-induced senescence. Cells briefly proliferate, sense danger, and then halt growth while releasing inflammatory signals that recruit immune surveillance. It’s an elegant fail-safe. But what happens when tissues are no longer young?
Working with colon organoids derived from young and aged mice, I observed that aging fundamentally rewires this response. Instead of entering a robust senescent state, aged epithelial cells often bypass growth arrest, continue proliferating, and show a muted secretory response. The same oncogenic signal produces profoundly different outcomes depending on cellular age.
These findings forced me to rethink cancer initiation not as a uniform process, but as one deeply shaped by time. Aging is not merely an accumulation of mutations — it is a biological state that alters signaling, stress responses, and tissue resilience. This realization has influenced how I design experiments, interpret data, and think about translational relevance.
Beyond the bench, this work has shaped my identity as a scientist. I’ve become increasingly drawn to communicating science — not just results, but the reasoning, uncertainty and curiosity behind them. Whether through mentoring, manuscript writing, or blogging, I believe storytelling is essential to making biomedical research meaningful and inclusive.
Research is often portrayed as a straight path toward discovery. In reality, it’s a dialogue between data and perspective. For me, studying aging has been a reminder that biology — and scientists themselves — are always changing. Understanding those changes may be key to preventing disease and improving health across the lifespan.
Related Content
- Cancer and the Mutation Paradox
- First Approval of Cancer Immunotherapy Based on Genetic Marker
- Finding Your Niche: How Rebecca’s Ph.D. Launched a Career in Medical Writing
Want to read more from the Johns Hopkins School of Medicine? Subscribe to the Biomedical Odyssey blog and receive new posts directly in your inbox.