Scientist Turns Solar Tech Into Cancer-Killing Light Therapy

A conversation during a walk with her husband sparked an idea that could transform how doctors treat cancer.

Sophia Lunt, a biochemist at Michigan State University, was discussing science with her husband Richard, who invented clear solar panels. Together, they wondered if his light-harvesting technology could be flipped to destroy cancer cells instead of generating energy. The answer turned out to be yes.

Their team engineered special molecules called organic salts that accumulate specifically in tumors. When doctors shine near-infrared light on these molecules, they produce reactive oxygen species that kill cancer cells while leaving healthy tissue untouched. Early tests in mice with breast cancer showed tumors stopped growing with minimal side effects.

This approach solves a major problem with current light-based cancer therapies. Traditional photodynamic treatments use visible light, which can't penetrate deep into the body and forces patients to avoid all light for three months to prevent burns all over their skin. Near-infrared light reaches deeper tissues and the engineered molecules concentrate only in tumors after 48 hours, making treatment safer and more targeted.

The breakthrough required biologists and engineers to learn each other's languages. At home, the Lunts would translate scientific concepts for each other, then help their team members bridge the same gap. What seemed like a crazy idea at first turned into promising results that convinced others to join the project.

Lunt's research journey began with childhood curiosity about soap chemistry and expanded to studying how cancer cells use sugar to spread through the body. She discovered that varying levels of an enzyme called PHGDH can signal how aggressive a tumor might become. High activity fuels growth, while dips in expression help cancer migrate to new locations.

The Ripple Effect

The light-activated therapy represents more than one scientific breakthrough. It demonstrates how combining expertise from completely different fields can create solutions neither discipline could achieve alone. Solar energy research meeting cancer biology opened a treatment path that conventional approaches missed entirely.

The Lunts co-founded a biotechnology startup to move their discovery from laboratory to clinic. This entrepreneurial turn surprised Sophia, who described the journey as educational, exciting, challenging, and sometimes overwhelming. The technology is now progressing toward real-world testing that could offer hope to patients who need gentler, more precise cancer treatments.

A career that started with fascination about soap's chemical properties has illuminated a new way forward in cancer care.